WPC-15000S
SERVICE MANUAL
Portable Air Condioners
2 page
WPC-15000S
Service Manual
Table of Contents
GENERAL DESCRIPTION..................................................................................4
General air condioning system
Portable air condioning system
SPECIFICATIONS..............................................................................................5
Exterior Dimension Diagram
Technical Specicaons
CONSTRUCTION.............................................................................................8
Internal Structure
REFRIGERANT SYSTEM CONSTRUCTION..........................................................9
Compressor
Compressor operaon
Compressor lubricaon
Condenser
Expansion valve
Evaporator
ELECTRICAL SYSTEM.....................................................................................15
Circuit Diagram
Control panel
Program Seng
Relay Board
Control Panel Input
Sensor Input
External Input Signal Specicaon
Control Specicaons
Self-Diagnosc Codes
Compressor
Fan Motor
Condenser Fan Motor
Capacitor
Temperature Sensor
Drain Pump
page 3
WPC-15000S
Service Manual
ASSEMBLY.....................................................................................................28
General Safety Informaon
Troubleshoong chart
DISASSEMBLY................................................................................................33
Disassembly
Control panel removal
Electrical parts and relay board removal
Fan motor removal
REFRGERANT SYSTEM REPAIR.......................................................................40
Brazing
Charging the System with R-410A Refrigerant
Connecon of gauge manifold
Evacuaon
Refrigerant Charging Work
4 page
WPC-15000S
Service Manual
GENERAL DESCRIPTION
General air condioning system
1) convenonal air condioners cool the enre enclosed environment.
2) They act as “heat exchangers”, equiring an interior unit (evaporator) to blow cool
air into the interior and an exterior unit (condenser) to exhaust exchanged heat
to the outdoors.
Portable air condioning system
1) The WPC-15000S is a spot cooler which
directs cool air to parcular areas or
objects.
2) The WPC-15000S has the following
features.
3) The innovave design of the WPC-15000S
has resulted in one compact unit,
replacing the need for two separate units.
4) With the whole cooling system built into
one compact unit, the WPC-15000S re
-
quires no piping and can be easily
transported and installed.
5) The WPC-15000S is economical because it
cools only the area or objects which need
to be cooled.
Condenser
Outdoor Unit
Evaporator
Indoor Unit
Intake air
(to Condenser)
Intake air
(to Condenser)
Exhaust Hot Air
Cooling Air
Intake air
(to Evaporator)
Filter
page 5
WPC-15000S
Service Manual
SPECIFICATIONS
Exterior Dimension Diagram (WPC-15000S)
mm(Inch)
715(28.1)
1100(43.3)
1401(55.2)
165(6.5)
1134(44.6)
101
(4)
6 page
WPC-15000S
Service Manual
SPECIFICATIONS
Exterior Dimension Diagram (WPC-15000S)
mm(Inch)
715(28.1)
1100(43.3)
1401(55.2)
165(6.5)
1134(44.6)
101
(4)
page 7
WPC-15000S
Service Manual
Technical Specicaons
Specicaons WPC-15000S
Power Supply Ph-V-Hz Single Phase, 220V, 60Hz
Cooling Capacity Btu/h 60,000
Power Consumpon Was 6,260
Rated Current Amps 28.49
EER Btu/Wh 9.58
Nema Plug 6-50P
Power Cord Gauge AWG 8
Power Cord Length 6
Dimensions W x D x H - in. (mm) 28.1 x 43.3 x 55.2 (715 x 1100 x 1401)
Weight (Net/Gross) Lbs(kg) 518/535.7 (235 / 243)
Condensate tank Gallons(Liters) Auto Pump Included
No. of Cool Air Outlets Pcs 3
Ambient temperature range
℉(℃)
64 ~ 113 (18~45)
Seng temperature
(Room cool mode) ℉(℃)
64 ~ 86 (18 ~ 30)
Seng temperature
(Spot cool mode) ℉(℃)
32 ~ (0 ~ )
Applicaon Area
(Room cool mode) ²(m²)
1,720(160)
Refrigerant Type / oz(g) R-410A / 98.8 (2,800)
Design Pressure Hi/Low Psig 465 / 250
Indoor Air Flow CFM(CMM) 1,700 (48)
Wheels pcs / diameter 4 / 127 mm
Hot Air Duct Diameter in. (mm) 20 (500)
Maximum Duct Length (m) 100 (30)
Safety Devices
Compressor overload protector, An-freezing thermister, Full drain
tank switch, Automac restart (Power interrupon), Compressor me
delay program, High pressure switch
Features
Temperature control, Self-diagnosc funcon, Washable lters, °F( °C)
display, O-mer, Drain pump installed , 20ʺ Hot air exhaust ange
included
8 page
WPC-15000S
Service Manual
Bottom Base
Caster
Power
Cord BKT
Drier
Cord Lock
Cond Out Pipe B
Water
Hose BKT
Water Hose Lock
Cond Out Pipe A
Drain Pump BKT B
LF Condenser
Drain Pump BKT A
Cond Low Plate
Cond Low Plate
Drain Pump BKT C
Cond Top Plate
Cond Top Plate
Drain Pump
LF Cover Rear
Control Box
Cond Filter
Cond Filter
LF Cover Front
RH Condenser
Control Box Cover
RH Cover Rear
RH Cover Front
Cond Cowl
Drain Pump Cover
Top Cover Front
Compressor
Display
Suction Pipe
Air BKT
Service
Nipple
Service
Nipple
Nozzle Ass'Y
Barrier
Cond Motor BKT A
Cond Motor
BKT A
Cond Motor BKT B
Low Cover
Front Cover
Rollet Bolt
Pipe BKT
Pipe BKT
Eva Filter
Tie Mount
Middle Base Bar
Middle Base Bar
Cond Motor BKT C
Middle Base
Cond Motor BKT D
Drain Pan
Cond Fan / Motor
Eva Low Plate
Cond Duct
Evaporator
Discharge Pipe
Eva Top Plate
Solenoid
Valve Coil
Eva Cover LF
Hotgas Pipe A
Eva Cover RH
Solenoid Valve
Eva L Guide
Solenoid
Valve BKT
Eva Fan / Motor
Hotgas
Pipe B
Eva Motor LF BKT
Distribute
Eva Motor RH BKT
Eva In Pipe
Thermostatic
Expansion Valve
Bypass Pipe
Eva Duct
Eva Cover Top
Air Guide A
Air Guide B
Back Cover
High Pressure
Switch
Top Cover Rear
CONSTRUCTION
Internal Structure (WPC-15000S)
page 9
WPC-15000S
Service Manual
Compressor
Evaporator
Expansion Valve
Drier
Condenser
REFRIGERANT SYSTEM CONSTRUCTION
10 page
WPC-15000S
Service Manual
Compressor
A scroll compressor is a piece of machinery inside your HVAC unit that compresses
gaseous refrigerant so that it can pass through your refrigerant coil and be sent into
your home to cool the air. A scroll compressor is a type of compressor that uses two
interlaced spiral metal pieces (or scrolls) instead of pistons to compress the refriger
-
ant.
The scroll compressor works by using a pair of scroll-shaped elements, with one
scroll orbing within the other scroll. As the outer scroll rotates, it draws in the gas
and compresses it as it moves inward. This acon creates pressure on the gas, thus
resulng in increased temperature.
SCROLL COMPRESSOR FUNCTIONAL DESCRIPTION
Discharge plenum
Discharge tube
Pressure relief valve
Fixed scroll
Orbiting scroll
Terminal cover
Power terminal
Counterweight
Eccentric Shaft
Lower bearing
Thrust washer
Oiln tube
Lower bearing ring
Shell
stator
Rotor
Crankcase
Slider block
Thermal valve
Check valve
page 11
WPC-15000S
Service Manual
Compressor operaon
1) Start of compression
1) The cylinder is lled with low pressure gas.
2) Since pressure in the discharge chamber
is higher than in the cylinder, the dis
-
charge valve is kept closed.
2) Sucon and compression
1) The pressure in the cylinder increases
gradually.
2) Refrigerant sucon begins on the suc
-
on side of the cylinder.
3) The discharge valve remains closed.
3) Discharge
1) The pressure in the cylinder exceeds that
in the discharge chamber, and the dis
-
charge valve opens.
2) On the sucon side, refrigerant sucon
connues.
4) Compleon of compression
1) When compression is completed, all of
the refrigerant has been drawn from the
sucon chamber.
2) Operaon then returns to step 1)(Start
of compression) and the above process
of sucon and compression connues
repeatedly in succession.
Blade
Discharge
Valve
Roller
Blade
Discharg
e
Valve
Roller
Blade
Discharge
Valve
Rolle
r
Blade
Discharge
Valve
Roller
12 page
WPC-15000S
Service Manual
Compressor lubricaon
The lubricaon system is comprised of a
hollow sha, an oil scraper mounted at the
end face, hollow sha, a sha journal (sha
bearing), and the lubricaon groove for the
sha journal.
The lubricaon groove is wider than the oil
hole. When the sha turns, oil is scraped
upward by the oil scraper along the inside
diameter of the hollow sha. The oil is fed
through the oil hole by centrifugal force,
then supplied to the lubricaon groove for
each sha journal, lubricang the bearing.
In this lubricaon system, oil enters into
each bearing separately and returns to the
oil reservoir. This system eecvely pre
-
vents bearing temperature increases, and
oers high reliability.
In addion, the specially treated sha jour
-
nal keeps the bearing from being
damaged during high temperature operaon.
Condenser
1) The condenser is a heat exchanger with
Louver ns.
2) Heat is given o and absorbed by air be
-
ing pulled across the condenser ns by the
fan. The air is then expelled through the
condenser air outlet.
Oil Feed Groove
Oil Hole
Oil Scrapper
Roller
Rotor
Cylinder
Hollow Sha
Eccentric Sha
page 13
WPC-15000S
Service Manual
Expansion valve
A thermostac expansion valve is a refrigeraon
and air condioning throling device that
controls the amount of refrigerant liquid
injected into a system’s evaporator—based
on the evaporator outlet temperature and
pressure
Evaporator
The evaporator is a heat exchanger covered with slit
ns. Heat is removed from the air being pulled across
the evaporator by the fan.
The resulng cool air is expelled through the cooling air
ducts.
14 page
WPC-15000S
Service Manual
ELECTRICAL SYSTEM
Circuit Diagram (WPC-15000S)
136
116
바이어명
Model
PART NO.
WPC-15000S22.07.21 신규
라벨 사이즈 136x116
1D R ICEN22072102 WPC-15000S Diagram
적용모델
작 성 검 토 확 인
수정사항
1
2
3
4
5
6
7
8
1
2
3
4
5
1. 재질 : 은무데드롱 25미크론
2. 인쇄방법: 씨링인쇄
3. 인쇄색상: 흑색 1도
4. 표면처리: 라미네이팅(OPP코팅)
5. 인쇄기준 : 도면 및 설계 제공 필름
6 외곽의 치수선(붉은선)은 인쇄후 절단선임.
WPC-15000S CL/EL
Power
1P AC 220V-60Hz
fuse1.fuse2 : 220V / 3.15A
E
T (AC) S
CP
PU
HT
EXT
COM
EMC
L
H
TH1
TH1
OUT_TEMP
SENSOR
SEN1
SEN2
SEN3
TH2
TH2
TH3
TH3
IN_TEMP
SENSOR
ICE_TEMP
SENSOR
MC 1 OCR 1
C
FAN'
MOTOR
C
C
R
S
COMP'
FND
PS (HP)
COM
COM
EXT
FD
FT
CO
COM
L
N
L
H
COM
COM
L
H
COM
CP
N-1
L-1
COM
CO
Power Remote
Control (Option)
EXT
COM
(FUSE)
(FUSE)
HIGH
PRESSURE
SWITCH
MC 2 OCR 2
L
N
L
N
MCCB
TB
COM
HP
L
N
L
N
L
N
Relay
"A"
N-1
COM
CP
LOW PRESSURE
SWITCH (Option)
IR/FT
RELAY RELAY
HL
(Motor)
Detail "A"
(PCB)
COM
Solenoid
Valve
(Hot Gas Bypas)
HG
HG
NO.1
HG
COND'
MOTOR
C
L
N
PUMP'
(PCB)
L
(PCB)
H
N
L N
(Motor)
Com
L
page 15
WPC-15000S
Service Manual
Control panel
Before operang the unit, it is important to be familiar with the basic operaon of
the control panel.
1. POWER BUTTON
• Acvates unit when POWER BUTTON is pressed.
• Fan starts on low speed.
• If POWER BUTTON is pressed during operaon, unit stops.
2. BLOWER BUTTON
• Changes fan speed from LOW to HIGH when pressed.
3. SPOT / COOL BUTTON
• Acvates compressor and begins producing cool air 5 seconds aer
buon is pressed.
• Regulates temperature based on outlet cool air temperature.
4. ROOM / COOL BUTTON
• Acvates compressor and produces cool air 5 seconds aer buon
is pressed.
• Regulates temperature based on inlet ambient air temperature.
1 2
5
3 4
6
87
16 page
WPC-15000S
Service Manual
5. SET TEMP BUTTON
• Change target temperature / data value by ± 1.
• Change data value by ± 10 by pressing connually.
• Press the SET TEMP BUTTONS to set temperature.
• Upper buon is to heighten temperature and Lower
buon is to lower temperature.
6. ALARM
• Alarm indicator light blinks and indicates abnormal
system operaon.
• If Alarm occurs, compressor stops.
• System operaon stops when ALARM light is acvated /
blinking longer than 3 minutes.
7. CURRENT TEMP
• Room cool mode displays current room temperature
in display in Fahrenheit.
• SPOT / COOL Mode displays outlet (cool air) temperature
during normal operaons.
• In order to change °F to °C, press SPOT / COOL and
ROOM / COOL buons together for 2 seconds.
• C will blink 2 mes and the gure will change to °C
• ALARM codes blink and are displayed when abnormal
operaon occurs.
8. TARGET TEMP
• Displays the unit set temperature for ROOM COOL mode only.
NOTE:The room temperature display range is from 14 °F to 122 °F.
(When displayed in “°C ” the range is from -10 °C to 50 °C)
page 17
WPC-15000S
Service Manual
Program Seng
Change
Indicaon
Delay me seng of COMP operaon.
EX)If seng is 3mins, it takes 3mins to
be ON aer COMP is OFF.
Deviaon temp seng.
Ex)It operates between 86Ɣ30íto 86Ɣ(93.2í
(±35.6Ɣ±2í),
if dF seng is 35.6Ɣ(2í under 89.6Ɣ(32í(temp seng).
IC temperature seng
(Frost prevenon sensor)
Temperature Correcon
Temperature Correcon
1-5minutes, control is
available per 1 minute
33.8Ɣ ~ 41Ɣ
(1í~ 5í
Descripon the range of seng
Temperature Seng Program Seng
(Auto restored when no seng is made in each mode)
Power Switch
Target
Temperature
ON/OFF when keep
depressing more than
1 seconds
Keep
depressing
more than
3 seconds
Delay me
Change
Deviaon
temperature
seng
Change
Temperature
dependence
Change
IC temperature
seng
Change
Auto restored when no seng is made in each mode
-50Ɣ ~ 50Ɣ
(-10í ~ +10í
-50Ɣ ~ 50Ɣ
(-10í ~ +10í
-41Ɣ ~ 41Ɣ
(-5í ~ +5í
Indicaon
Delay me seng of COMP operaon.
EX)If seng is 3mins, it takes 3mins to
be ON aer COMP is OFF.
Deviaon temp seng.
Ex)It operates between 30íto 34í(±2í),
if dF seng is 2í under 32í(temp seng).
IC temperature seng
(Frost prevenon sensor)
Temperature Correcon
Temperature Correcon
1-5minutes, control is
available per 1 minute
1í~ 5í
Descripon the range of seng
-10í ~ +10í
-10í ~ +10í
-5í ~ +5í
18 page
WPC-15000S
Service Manual
Relay Board
The relay board contains the compressor and fan on relays, in addion to a step-
down transformer that converts the line voltage (WPC-15000S: 208/230 VAC) to
12V. This voltage is then converted from AC to DC and used for relay coil acvaon.
The 12 V (DC) power is sent to the control panel assembly.
1) Power supply requirements
WPC-15000S requires a single-phase 208/230 V, 60 Hz power supply.
2) Relay board fuse
The relay board fuse is the only serviceable component on the relay board assem
-
bly. This fuse provides protecon against damage to the step-down transformer.
The fuse must be replaced with the exact same part, or a suitable equivalent.
Specicaons : 3.15 A 250 VAC
Failure to use the exact same fuse may result in damage to the
unit and/or components, and will also void the unit warranty.
CAUTION
page 19
WPC-15000S
Service Manual
3) Input Signal
The relay board receives inputs from the control panel, sensors, and external
devices to perform device control.
Symbol Indicaon Funcon Connector
ON/OFF Buon
If POWER BUTTON is pressed during operaon, unit
stops.
CON8
FAN Buon
Changes fan speed from LOW to HIGH when
pressed.
SET TEMP△Buon
Regulates temperature based on outlet cool air
temperature.
SET TEMP▽Buon
Regulates temperature based on inlet ambient air
temperature.
Symbol Type
Specicaon
Connector
Characterisc “Short”Detecon “Open”Detecon
TH1
OUT TEMP
SENSOR
10 k ohm at
77 °F (25 °C)
181 °F (83 °C) or
more
-29 °F (-34 °C) or
less
TH1
TH2
IN TEMP SEN
-
SOR
10 k ohm at
77 °F (25 °C)
181 °F (83 °C) or
more
-29 °F (-34 °C) or
less
TH2
TH3
ICE TEMP SEN
-
SOR
10 k ohm at
77 °F (25 °C)
181 °F (83 °C) or
more
-29 °F (-34 °C) or
less
TH3
Symbol Signal Specicaon Funcon Connector
CO Comp Overload
On: Between 10
to 20 mA at DC12
V (O: No signal)
On: Acvates “Defect control”
(Contact: Normally open) LED
shows “CO”, Output signal“ON”
CO
FD
External Pump
Failure
On: Between 10
to 20 mA at DC12
V (O: signal)
O: Acvates “Defect control”
(Contact: Normally open) LED
shows “FU”, Output signal“ON”
FD
HP Pressure Switch
On: Between 10
to 20 mA at DC12
V (O: signal)
On: Acvates “Defect control”
(Contact: Normally closed) LED
shows “PS” output signal “ON”
HP
FT Tank Full Switch
On: Between 10
to 20 mA at DC12
V (O: signal)
On: Acvates “Defect control”
(Contact: Normally closed) LED
shows “FT”, Output signal“ON”
FT
Control Panel Input
Sensor Input
External Input Signal Specicaon
20 page
WPC-15000S
Service Manual
Control Specicaons
1) EVAPORATOR FAN MOTOR
• When the BLOWER buon is pressed, the RL1/3 (fan motor HI/LOW) relay on the
relay board turns on, operang the fan.
Specicaons:
- RL1/3 (Fan motor HI-LOW) relay output: 10 A at AC 250 V
2) Compressor start control
• When the ON/OFF buon is pressed, the RL4 relay on the relay board turns on,
operang the compressor.
Specicaons:
- RL4 (Compressor On-O) relay output: 5 A at AC 250 V
3) An-freeze control
• An-freeze controls turns the compressor on and o by turning the RL4 relay
on in accordance with the freeze protecon thermistor (TH3) temperature. As a
result, decreases in cooling performance due to frost buildup on the evaporator
are prevented.
• Compressor o condions: Freeze protecon thermistor (TH3) temperature ≤
28.4 °F (-2 °C)
• Compressor on (recovery) condions: TH3 (ICE temperature) ≥ 33.8 °F (1 °C)
ON
OFF
S3
28.4 °F
(-2 °C)
33.8 °F
(1 °C)
TH3 temperature
(Evaporator out temperature)
page 21
WPC-15000S
Service Manual
4) Compressor me delay control (compressor protecon)
Compressor protecon consists of a me delay program within the microproces
-
sor. This program prevents a heavy load from being applied to the compressor
motor when restarng the unit (room/cool mode or spot/cool mode) aer a very
short period of me. This “delay” is in eect any me the compressor is turned
on by either the POWER ON/OFF buon or ROOM/COOL or SPOT/COOL ON/OFF
buon.
Specicaons:
- Time Delay: 120 sec.
5) Automac restart and recovery funcon
• The microprocessor contains a feature that automacally restart the unit aer
power is lost and regained, and also has memory to store and recover operaon
status in the even of a power loss.
Status of memory during power interrupon
• When the input power is o, the status items below are saved in the memory.
- Running status (on or o)
- Operang mode: Cool mode or fan only mode
- Set temperature
- Temperature mode (°F or °C)
6) Temperature control
• During cool mode, temperature control changes the RL4 (compressor on/o)
relay status according to TH3 temperature in the available range(-4 °F to 140 °F
(-20 °C to 60 °C)).
ON
OFF
RL4
(Compressor Relay)
(Set Temp. -3 °F)
(Set Temp. -35.06 °F)
Set Temp
Inlet Air Temperature
When compressor operaon connues within this range
for more than 5 minutes, the RL4 relay stops.
22 page
WPC-15000S
Service Manual
Self-Diagnosc Codes
Self-diagnosc codes are displayed on the Display Panel under the following
condions.
SELF-DIAGNOSTIC ALARM CODES
Alarm Code Possible Causes What To Do
Compressor
overload
• High ambient
temperature
• Unstable power
supply
• Defecve
compressor
• Ambient temperature
must be under 113°F(45°C)
• Check the power supply
• Contact a qualied
service agent
Out of phase
Incorrect power
cable connecon
Re-connect the power cable
to the correct power source
Drain pump
(Applicapable
for unit with
drain pump)
• Defecve drain
pump
• Improper water
circulaon
• Check the hose connecon
from drain pump
• Replace the drain pump
• Contact a qualied service
agent
High pressure
• Improper air
circulaon
• High ambient
temperature
• Clean the air lter
• Ensure exhaust duct is not
blocked or kinked
• Ambient temperature
must
be under 113°F(45°C)
Low Pressure
• Refrigerant leak
• Low ambient
temperature
• Contact a qualied
service agent
Table 1- Alarm Codes
page 23
WPC-15000S
Service Manual
Table 1- Alarm Codes
SELF-DIAGNOSTIC ALARM CODES
Alarm Code Possible Causes What To Do
Frost on heat
exchanger
Indoor heat
exchanger
temperature too
low
• Do not use the air
condioner if ambient
temperature is lower than
64°F(18°C)
• Contact a qualied
service agent
Abnormal
temperature
sensor value
TH1(Evaporator
coil)
temperature sen
-
sor has a loose or
broken connecon
Contact a qualied service
agent
Abnormal
temperature
sensor value
TH2(Evaporator
coil)
temperature sen
-
sor has a loose or
broken connecon
Contact a qualied service
agent
Abnormal
temperature
sensor value
TH3(Evaporator
coil)
temperature sen
-
sor has a loose or
broken connecon
Contact a qualied service
agent
24 page
WPC-15000S
Service Manual
Compressor
1) Compressor motor
• The compressor motor is a single-phase motor
and is contained within the same housing as
the compressor.
Specicaons:
2) Compressor overload relay
• The compressor overload relay is used to protect the compressor motor.
The relay interrupts the ow of current when there is an overload condion and,
high temperature builds up in the compressor.
Rated Voltage CAPACITY
WPC-15000S 220 V 20,456W ±5%
Run capacitor
AUXMAIN
RS
C
COMP
R.
MO
TOR
Inner protector
page 25
WPC-15000S
Service Manual
Capacitor Rated Voltage Capacitance
WPC-15000S
Compressor 450 V 70µF
Cond Motor 450 V 25µF
Eva Motor 450 V 10µF
Run capacitance
Check capacitance
• The fan motor is a single phase, inducon type.
The motor rotates the fan on both the evapora
-
tor side and the condenser side at the same
me.
• The following table shows the specicaons of
the fan motor used for each model.
NOTE:An internal overload relay is used to protect
the fan motor. This relay is built into the fan motor
and interrupts the ow of current when there is
an over current situaon, or if abnormally high
temperature builds up in the fan motor.
Fan Motor
Capacitor
• The capacitor is used to improve the rotaonal
power of the fan motor and compressor at
start up. The specicaon for each capacitor is
shown below.
26 page
WPC-15000S
Service Manual
Temperature Sensor
• Outlet temp sensor (TH1) is installed on top of the
evaporator, and detects evaporator outlet temperature
as a resistance value.
• Inlet temp sensor (TH2) is installed in front of evapo
-
rator, and detects evaporator inlet temperature as a
resistance value.
• Ice temp sensor (TH3) is installed in the evaporator outlet piping, and detects low
temperature on the evaporator as a resistance value.
Symbol Type
Specicaon
Connector
Characterisc “Short”Detecon “Open”Detecon
TH1 OUT TEMP SENSOR
10 k ohm at
77 °F (25 °C)
181 °F (83 °C) or
more
-29 °F (-34 °C)
or less
TH1
TH2 IN TEMP SENSOR
10 k ohm at
77 °F (25 °C)
181 °F (83 °C) or
more
-29 °F (-34 °C)
or less
TH2
TH3 ICE TEMP SENSOR
10 k ohm at
77 °F (25 °C)
181 °F (83 °C) or
more
-29 °F (-34 °C)
or less
TH3
page 27
WPC-15000S
Service Manual
Drain Pump
Model : MD-1000C
• Drain pump is the device that drain the condensate automacally, when the wa-
ter level caused by heat exchanging is rising up.
• Check the drain pump defecve or improper hose connecon,
when the alarm code is “Fd”
• Turn o the power when you reassemble it.
Amount of dehumidicaon
( Liter/Time@Height )
Maximum Pumping Head
0 m 5 m 10 m Meter Ft
648ℓ/h 366ℓ/h 204ℓ/h
10.0m 33
Power Supply Amps Weight
The capacity
of the
water tank
Duct
Diameter
60Hz 220V 0.99A 3.13 kg
3.2ℓ
3/8”
mm(inch)
28 page
WPC-15000S
Service Manual
ASSEMBLY
Front and Right Side View
Condenser / filter
Figure 3
Figure 2
Back and Le� Side View
Caster
Electrical access panel
Drain pump hose connector
Handle
Cool air outlet
Display / Control board
Top fan exhaust flange
Evaporator / filter
Condenser / filter
Drain pump included
Figure 7
Figure 4
Figure 5
Figure 6
1. Remove cool air outlet hose(s) from
carton.
2. Place the cool air outlet hose(s) on
the front top of air condi�oner.
3. Use screws (enclosed inside of box
with cool air outlet hose(s) to install
the cool air outlet hose(s)
on the air condi�oner as shown in
Figure 5.
1. Take out the cord holder
from the accessory box.
2. Place the cord holder on
the back side of air condi�oner.
3. Use screws (enclosed inside of
accessory box ith cord
holder)to install the cord
holder on the air condi�oner
as shown in Figure 4.
TOP FAN EXHAUST FLANGE
1. Remove the top fan exhaust flange from carton.
2. Place the top fan exhaust flange on the top of air
condi�oner.
3. Use screws (enclosed inside of box with the top fan
exhaust flange) to install the top fan exhaust flange on air
condi�oner as shown in Figure 6.
HANDLE
1. Remove a handle from carton.
2. Place the handle on upper side of rear panel.
3. Use screws (enclosed inside of box with a handle)
to install the handle as shown in Figure 7.
POWER CORD HOLDER
DISCHARGE DUCTS
/SUPPLY AIR DUCT
page 29
WPC-15000S
Service Manual
General Safety Informaon
Please read this manual carefully for instrucons on correct installaon and usage.
Please read all safeguards.
1. Transport and store the unit in an upright posion only. Leave unit in an upright
posion for at least 3 hours before rst use.
2. Always place the unit on an even, level surface.
3. Ensure the unit is connected to a grounded power supply of the correct rang /
capacity.
4. The unit will cool when the room temperature is between 18°C (64.4°F) ~
45°C(113°F) depending on the thermostat seng.
5. DO NOT use this unit for funcons other than those described in this instrucon
manual.
6. DO NOT lt the unit.
7. DO NOT cover or obstruct the unit’s inlet and outlet grilles.
8. DO NOT use the unit in areas where it will be exposed to rain or water.
9. NEVER unplug the unit while it is operang.
10. DO NOT place any foreign objects on the unit.
11. DO NOT operate the unit with wet or damp hands.
12. DO NOT allow chemical substances to come into contact with the unit.
13. DO NOT operate the unit in the presence of ammable substances or vapors
such as alcohols, pescides, gasoline, etc.
14. DO NOT use the plug to start and to stop the unit. Always use the control panel
to start and to stop the unit.
15. Always turn o the unit when it is not in use and unplug the power plug from
the electrical outlet.
16. Always turn the unit o and unplug the main power plug from the electrical
outlet before cleaning, moving or performing maintenance.
DO NOT use the unit in wet environments, such as
a laundry room, to avoid the risk of electrical shock.
DO NOT operate the unit in explosive or ammable
environments.
WARNING
WARNING
30 page
WPC-15000S
Service Manual
17. AVOID the use of adapter plugs or extension cords. If it is necessary to use an
extension cord or an adapter plug to operate the unit, ensure that they are
correctly rated for the applicaon. Consult a local qualied electrician and all
local electrical codes to ensure proper setup. Any extension cord used with this
device must be rated for a minimum of 15A.
18. DO NOT unplug the unit by pulling on the electrical cord. Keep electrical cord
away from heat sources and always completely unroll the cord to avoid over
-
heang. If the power cord becomes damaged, a qualied service agent, quali-
ed electrician, or similarly qualied person must replace it, in order to avoid a
hazard or shock.
19. The lters must be used with the product at all mes. When the lters are
removed for cleaning, always ensure that the unit has been turned o and
unplugged from the electrical outlet.
20. Regularly clean the lters to maintain eciency. If the lters are not cleaned
regularly, the units output performance and eciency will decline and energy
consumpon will increase.
21. DO NOT operate the unit with a damaged power cord or plug, aer it malfunc
-
ons, has been dropped or damaged.
22. Only use in the upright posion on an even, at surface. Unit must be posi
-
oned at least 24 inches (60 cm) from the nearest object in any direcon.
23. Stop operaon immediately if abnormal noise or odor is noced. Contact a lo
-
cal service center.
24. Appliance is not to used by children or persons with reduced physical, sensory
or mental capabilies, or lack of experience and knowledge, unless they have
been given supervision or instrucon.
25. Children being supervised not to play with appliance.
26. That the appliance shall be installed in accordance with naonal wiring regula
-
ons.
27. If the supply cord is damaged, it must be replaced by the manufacturer, its ser
-
vice agent or similarly qualied persons in order to avoid a hazard.
SAVE THESE INSTRUCTIONS
DO NOT operate a unit with a damaged power cord.
WARNING
page 31
WPC-15000S
Service Manual
Troubleshoong chart
Symptom Possible Cause(s) Correcve Acon
Water leakage
Posion issue /
Damage
Drain pump issue
1. Check the water tank is placed
on the correct posion Replace
the damaged water tank with
the new one.
2. Remove any object stuck
underneath the Drain Pan
underneath the water tank
1. Remove blockage from
drain hose
2. Replace the defecve drain
pump with the new one.
The unit doesn’t work
Check the power sup
-
ply to verify that power
is available to the unit
1. Reset the circuit breaker and
restart the unit
Verify that the power
cord is connected
Trip o the circuit
breaker
1. Connect power cord
1. Electrical access panel in Reset
the circuit breaker and restart the
unit
(Consult a local qualied electri
-
cian)
No cold air ows from
the
cold air outlet
Ambient air cannot be
properly cooled if the
lter is dirty and not
regularly cleaned
1. Clean the lter
32 page
WPC-15000S
Service Manual
No cold air ows from the
cold air outlet
Compressor will not
work if the unit is
turned o and on
quickly.
Refrigerant leaking
1. Wait 3 minutes aer unit is
turned o before turning
the unit back on.
2. Check the Cool Icon
If the light is o, A/C will
be acvated aer light
is on.
1. Charge the refrigerant
The ambient air
temperature may be
too high
1. The temperature of the
compressor can be higher
when the ambient tem
-
perature is too high. The
compressor will not work
unless the ambient air
temperature is within the
acceptable operang range
of the unit
Water ow can be heard
aer compressor shuts o
No cause
Common to hear coolant ow
-
ing aer unit shuts o
Symptom Possible Cause(s) Correcve Acon
※ A defecve unit must be repaired by a qualied company.
page 33
WPC-15000S
Service Manual
DISASSEMBLY
Disassembly
1) Remove the aer turning o the
circuit breaker (For Safety)
2) Take out the twelve (2) screws, and
remove front panel.
3) Take out the twelve (12) screws, and then
remove the cooling air duct.
Cooling Air Duct
Front Panel
Control Box Cover
Back Cover
Screws (12)
Screws (13)
Screws (10)
Screws (12)
Screws (10)
Screws (11)
Screws (4)
Screws (4)
Screws (11)
Screws (11)
Cover Top Rear
Cover Top Front
LF Cover Rear
RH Cover Front
RH Cover Rear
LF Cover Front
Control panel
Connector
4) Take out the four(4) screws, and
then remove the brake box cover.
5) O the circuit breaker. (For safety)
Cooling Air Duct
Front Panel
Control Box Cover
Back Cover
Screws (12)
Screws (13)
Screws (10)
Screws (12)
Screws (10)
Screws (11)
Screws (4)
Screws (4)
Screws (11)
Screws (11)
Cover Top Rear
Cover Top Front
LF Cover Rear
RH Cover Front
RH Cover Rear
LF Cover Front
Control panel
Connector
Capacitor for
Compressor
1
1
4 4
6
6
7 78 89
9
10
11
10 11
12 13
12
13
14 15
14
15
18
18
19
19
20
20
23
24
26
27
27
28
2
2
3
3
5
5
16
16
17
17
21
21
22
22
23
24
25
25
26
28
29
29
32
32
33
33
34
34
35
35
36 36
37
37
38 38
39
39
40
40
41
42
41
42
43
43
44
45
45
46
46
47
47
49
49
51 52 53 54 55 56 57 58 59 60 61
30
30
31
31
44
44
43
48
48
50
50
34 page
WPC-15000S
Service Manual
6) Take out the nine (13) screws, and
then remove the back cover.
7) Take out the nine (15) screws, and
then remove the cover top Rear.
8) Take out the nine (11) screws, and
then remove the cover top front.
9) Cover top front the control panel
and then remove the front panel.
Cooling Air Duct
Front Panel
Control Box Cover
Back Cover
Screws (12)
Screws (13)
Screws (10)
Screws (12)
Screws (10)
Screws (11)
Screws (4)
Screws (4)
Screws (11)
Screws (11)
Cover Top Rear
Cover Top Front
LF Cover Rear
RH Cover Front
RH Cover Rear
LF Cover Front
Control panel
Connector
Cooling Air Duct
Front Panel
Control Box Cover
Back Cover
Screws (12)
Screws (13)
Screws (10)
Screws (12)
Screws (10)
Screws (11)
Screws (4)
Screws (4)
Screws (11)
Screws (11)
Cover Top Rear
Cover Top Front
LF Cover Rear
RH Cover Front
RH Cover Rear
LF Cover Front
Control panel
Connector
Cooling Air Duct
Front Panel
Control Box Cover
Back Cover
Screws (12)
Screws (13)
Screws (10)
Screws (12)
Screws (10)
Screws (11)
Screws (4)
Screws (4)
Screws (11)
Screws (11)
Cover Top Rear
Cover Top Front
LF Cover Rear
RH Cover Front
RH Cover Rear
LF Cover Front
Control panel
Connector
page 35
WPC-15000S
Service Manual
Cooling Air Duct
Front Panel
Control Box Cover
Back Cover
Screws (12)
Screws (13)
Screws (10)
Screws (12)
Screws (10)
Screws (11)
Screws (4)
Screws (4)
Screws (11)
Screws (11)
Cover Top Rear
Cover Top Front
LF Cover Rear
RH Cover Front
RH Cover Rear
LF Cover Front
Control panel
Connector
Cooling Air Duct
Front Panel
Control Box Cover
Back Cover
Screws (12)
Screws (13)
Screws (10)
Screws (12)
Screws (10)
Screws (11)
Screws (4)
Screws (4)
Screws (11)
Screws (11)
Cover Top Rear
Cover Top Front
LF Cover Rear
RH Cover Front
RH Cover Rear
LF Cover Front
Control panel
Connector
12) Take out the seven (10) screws,
and then remove the
RH Cover front.
14) Take out the seven (11) screws,
and then remove the
RH Cover Front.
11) Remove the air lter from the
back panel.Take out the thirteen
(12) screws, and then remove the
LF Cover rear.
13) Remove the air lter from the
back panel.Take out the thirteen
(10) screws, and then remove the
LF Cover Front.
36 page
WPC-15000S
Service Manual
1) Take out the four (4) screws, and
then remove the control panel.
Screws (4)
Control Panel
Control Panel Removal
page 37
WPC-15000S
Service Manual
Electrical parts and relay board removal
( WPC-15000S )
Capacitor for
Compressor
1
1
4 4
6
6
7 78 89
9
10
11
10 11
12 13
12
13
14 15
14
15
18
18
19
19
20
20
23
24
26
27
27
28
2
2
3
3
5
5
16
16
17
17
21
21
22
22
23
24
25
25
26
28
29
29
32
32
33
33
34
34
35
35
36 36
37
37
38 38
39
39
40
40
41
42
41
42
43
43
44
45
45
46
46
47
47
49
49
51 52 53 54 55 56 57 58 59 60 61
30
30
31
31
44
44
43
48
48
50
50
38 page
WPC-15000S
Service Manual
( WPC-15000S )
Control Box
Terminal Block
Compressor Capacitor
Space Support
Main PCB
Circuit Breaker
Aluminum Channel
Fix
Fix
Magnetic Contactor
Over Current Relay
Relay Socket
Relay Socket
Relay
page 39
WPC-15000S
Service Manual
Fan Motor Removal (Model : WPC-15000S)
Air Guide B
Air Guide A
Eva Cover Top
5) Eva Motor RH BKT
4) Eva Duct
Barrier
3) Cond Motor BKT LF
Cond Motor / Fan
Eva Fan / Motor
6) Eva Motor LF BKT
2) Cond Motor BKT RH
1) Cond Duct
1) Take o the three (4) nuts , and then remove the condenser Duct.
2) Take o the three (6) bolts , and then remove the condenser motor BKT RH.
3) Take out the four (6) bolts, and then remove the condenser motor fan.
4) Take o the three (4) nuts , and then remove the evaporator Duct.
5) Take o the three (6) bolts , and then remove the evaporator motor BKT RH.
6) Take out the four (6) bolts, and then remove the evaporator motor fan.
40 page
WPC-15000S
Service Manual
REFRIGERANT SYSTEM REPAIR
Brazing
• In the event of a leak, obstrucon, or trouble in the refrigerant system of the unit,
replace or repair the defecve component. Aer replacing defecve component,
braze all connecons.
1) Proper brazing techniques
• When brazing, use a slightly reduced ame. Oxyacetylene is commonly used since
the ame condion can be easily judged and adjusted. Unlike gas welding, a sec
-
ondary ame is used for brazing. Properly preheat the base metal according to the
shape, size and thermal conducvity of the brazed ng.
• The most important point in ame brazing is to bring the enre brazed ng to
a proper brazing temperature. Care should be taken not to cause overow of the
brazing ller metal, oxidaon of the brazing ller metal, or ller metal deteriora
-
on due to overheang the ux.
2) Brazed ngs and ng clearance
• In general, the strength of the brazing ller metal is lower than that of the base
metal. As such, the shape and clearance of
brazed ngs are very important. Concern
-
ing the shape of brazed ngs, adhesive
area must be maximized. In addion, the
clearance of the brazed ng must be mini
-
mized so that the brazing ller metal will
ow into the ng via capillary acon.
Clearance
Clearance From The Pipe Fing and Tubing.
0.001~0.003 in
(0.025~0.075 mm)
a
a
page 41
WPC-15000S
Service Manual
3) Cleaning brazing ller metal and piping
• When the refrigerant system has been opened, exposure to heat may cause the
brazing ller metal to sck to the inside and outside of the piping. Brazing ller
metal may also combine with oxygen in the air to form an oxide lm. In addion,
grease and oils may sck to the pipe during handling. All these factors will reduce
the eecveness of brazing. Therefore, excess brazing ller metal must be removed
with sand paper, and by thorough cleaning with a solvent such as Trichlene.
4) Dry Nitrogen gas use
• During brazing, the inside of the pipe undergoes an oxidave reacon due to the
brazing ame. Introduce dry nitrogen gas (0.3 gal/min (1 L/min); adjust with the
ow regulator) through the pinch-o tube of the refrigerant cycle to prevent oxi
-
daon.
NOTE:Do not get foreign maer such as dirt, water, or oil into the piping.
5) Vercal joints
• For vercal joints, heat the enre brazed ng to the proper brazing temperature.
Bring the brazing ller metal into contact with the ng so that the brazing ller
metal begins to ow.
• Stop heang the ng as soon as the braz
-
ing ller metal has own into the gap (clear-
ance). Since the brazing ller metal ows
easily into porons heated to the proper
temperature, the enre ng must be kept
at the proper brazing temperature.
Burner
45°
Tube
Brazing Filler Metal
Vercal Down Joint
Tube
Burner
45°
Brazing Filler Metal
Vercal Up Joint
42 page
WPC-15000S
Service Manual
WARNING
Charging the System with R-410A Refrigerant
• Always ensure that the refrigerant system has been properly evacuated before
charging with the specied amount of R-410A.
• Equipments is only for R-410A.
• Liquid charge (no gas charge).
• Make sure not to use more than 90 % of the inial weight of R-410A in the cylin
-
der.
• When handling refrigerant (R-410A), the following precauons should al
-
ways be observed:
- Always wear proper eye protecon while handling refrigerant.
- Maintain the temperature of the refrigerant container below 104 °F (40 °C).
- Perform repairs in a properly venlated area. (Never in an enclosed environ
-
ment.)
- Do not expose refrigerant to an open ame.
- Never smoke while performing repairs, especially when handling refrigerant.
- Be careful the liquid refrigerant does not come in contact with the skin.
• If liquid refrigerant strikes eye or skin:
- Do not rub the eye or the skin.
- Splash large quanes of cool water on the eye or the skin.
- Apply clean petroleum jelly to the skin.
- Go immediately to a physician or to a hospital for professional treatment
page 43
WPC-15000S
Service Manual
Connecon of gauge manifold
1) Properly remove the crushed end of the
pinch-o tube at the high pressure side and
the low pressure side of the refrigerant cycle
with a pipe cuer.
2) Fit the process tube ng to the pinch-o
tube on both sides.
3) Connect the charging hoses (low pressure
side) for the gauge manifold to the tube t
-
ng.
NOTE: Connect the hoses using care not to
mistake the high pressure side for the
low pressure side and vice versa.
4) Connect the charging hose at the center of
the gauge manifold to the vacuum pump.
Evacuaon
1) Open the low pressure valve (LOW) of the
gauge manifold.
2) Turn on the vacuum pump to start evacua
-
on.(Evacuate the system for approximate-
ly 30 min.)
3) When the low pressure gauge indicates 30
inHg(100 kPa), turn o the vacuum pump
and close the Low pressure valves of the
gauge manifold.
4) Leave the high pressure valve and the low
-
pressure valve of the gauge manifold closed
for ve min or more, and conrm that the gauge pointer does not return to zero.
High Pressure Valv
e
(Closed)
Low Pressure
Side Tube
Vacuum Pump
(when stopped)
Low Pressure
Va
lve (Closed)
Tube Fitting
Pinch-Off Tube
Seal
Charging Hose
Side
Refrigerant
Cycle Side
Low Pressure
Side Tube
Vacuum Pump
(when stopped)
30 inHg (100 kPa) or larger
High Pressure Valv
e
High Pressure Gauge
Low Pressure Gauge
Low Pressure
Valv
e
44 page
WPC-15000S
Service Manual
Refrigerant Charging Work
(1)Refrigerant charging
1) Remove the charging hose from the vacuum
pump, and connect it to the refrigerant cyl
-
inder (R-410A).
2) Loosen the nut on the gauge manifold side
of the charging hose. Open the valve of the
charging hose. Open the valve of the refrig
-
erant cylinder. Aer air purging, ghten this
nut and close the valve of the refrigerant
cylinder.
3) Securely place the refrigerant cylinder on a
scale with a weighing capacity of 70 lb (30
kg) that is graduated by 0.2 oz (5 g).
4) Open low the high pressure valve of the gauge manifold and the valve of the
refrigerant cylinder. Charge the system with refrigerant to the specied amount.
Standard Amount of Refrigerant:
- WPC-15000S : 98.8 oz ( 2,800 g )
5) Close the high pressure valve of the gauge manifold and the valve of the refriger
-
ant cylinder.
(2)Removal of gauge manifold
1) Crimp the pinch-o tube with a pinch-o
tool.
2) Remove the gauge manifold and the pro
-
cess tube ng. Crush the end of the
pinch-o tube.
3) Braze the end of the pinch-o tube.
4) Ensure that a gas leak is not present at the
pinched o poron and the brazed end.
CAUTION
The amount of refrigerant charged has a great eect on
the cooling capacity of the unit. Charge to the specied
amount,always observing the scale graduaons while
charging.
Refrigerant
Cylinder R-410A
Low Pressure
Side Tube
Low Pressure Valve
Valve of
Refrigerant
Cylinder
LO
Closed
HI
Open
LO
Closed
HI
Closed
Valve Setting
Specified Amount
of Refrigerant
Pinch-Of
f Tube
Pinch-Off Tool
Process Tube Fitting
Charging Hose
To Gauge
Manifold Side
To Refrigerant
Cycle Side
page 45
WPC-15000S
Service Manual
•Do not aempt any repair on a charged system.
• Before checking for gas leaks, fully conrm that there is nothing ammable in
the area to cause an explosion or re. Contact of refrigerant with an open re
generates toxic gas.
WARNING
WARNING
154, Jayumuyeok 3-gil, Masanhoewon-gu, Changwon-City, Gyeongsangnam-do, 51340 Korea
TEL: +82-55-294-9200(ext.2) FAX: +82-55-294-9220 http://www.weltem.com
