DIRECT DRIVE AIR COMPRESSOR 50L - 2HP 110V
MODEL NO: SAC5020E110V.V4
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these instructions,
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
1.1. ELECTRICAL SAFETY
WARNING! It is the responsibility of the owner and the operator to read, understand and comply with the following: You must check
all electrical products before use to ensure that they are safe. You must inspect power cables, plugs, sockets and any other connectors
for wear or damage. You must ensure that the risk of electric shock is minimised by the installation of appropriate safety devices. A
Residual Current Circuit Breaker (RCCB) should be incorporated in the main distribution board. We also recommend that a Residual
Current Device (RCD) is used. It is particularly important to use an RCD with portable products that are plugged into a supply which is
not protected by an RCCB. If in any doubt consult a qualified electrician. You must also read and understand the following instructions
concerning electrical safety:
1.1.1. The Health & Safety at Work Act 1974 makes owners of electrical appliances responsible for the safe condition of those appliances
and the safety of the appliance operators. If in any doubt about electrical safety, contact a qualified electrician.
1.1.2. Ensure that the insulation on all cables and on the appliance is safe before connecting it to the power supply.
1.1.3. Ensure that cables are always protected against short circuit and overload.
1.1.4. Regularly inspect power supply cables and plugs for wear or damage and check all connections to ensure that none are loose.
1.1.5. Important: Ensure that the voltage marked on the appliance matches the power supply to be used and that the plug is fitted with the
correct fuse.
8 DO NOT pull or carry the appliance by the power cable.
8 DO NOT pull the plug from the socket by the cable.
8 DO NOT use worn or damaged cables, plugs or connectors. Immediately have any faulty item repaired or replaced by a qualified
electrician.
1.1.6. Over/current Protection: The user has to make provision for the installation of the over-current protection of the power circuit.
1.1.7. Electrical disconnecting device:The user has to make provisions for the installation of the electrical disconnecting device of the
power circuit.
NOTE: If using a transformer to supply the compressor, it must be rated at a minimum of 2kVA to allow the compressor to run efficiently.
1.2. GENERAL SAFETY
9 Familiarise yourself with the application and limitations of the compressor.
9 Operation must be with all guards, covers, lids and enclosures correctly in place.
9 The concentration of processed gases that can displace breathing air shall be kept within acceptable levels. Reference EN 12021 for
acceptable levels of contaminants in breathing air.
9 Remove from mains supply when performing maintenance or inspections.
9 Ensure the compressor is in good order and condition before use. If in any doubt do not use the unit and contact an electrician/service
agent.
9 Delivery hoses should be fitted with a safety cord.
WARNING! Compressor must only be serviced by an authorised agent. DO NOT tamper with, or attempt to adjust, pressure switch or
safety valve.
9 Before moving, or maintaining the compressor ensure it is unplugged from the mains supply and that the air tank pressure has been
vented.
9 Maintain the compressor in good condition and replace any damaged or worn parts. Use genuine parts only. Unauthorised parts may be
dangerous and will invalidate your warranty.
9 Read the instructions relating to any accessory to be used with this compressor. Ensure the safe working pressure of any air appliance
used exceeds compressors output pressure.
9 If using a spray gun, check that the area selected for spraying is provided with an air change/ventilation system.
9 Ensure the air supply valve is turned off before disconnecting the air supply hose.
9 To move the compressor use the handle only. Maintain unit’s centre of gravity when lifting. DO NOT attempt to lift or move the compressor
by any other means.
9 Use the compressor in a well ventilated area and ensure it is placed on a firm surface.
9 Keep tools and other items away from the compressor when it is in use, and keep area clean and clear of unnecessary items.
9 Ensure the air hose is not tangled, twisted or pinched.
9 Keep children and unauthorised persons away from the working area.
8 DO NOT disassemble compressor for any reason. The unit must be checked by qualified personnel only.
8 DO NOT use the compressor outdoors, or in damp, or wet, locations.
8 DO NOT operate within the vicinity of flammable liquids, gases or solids.
Original Language Version
© Jack Sealey Limited
SAC5020E110V.V4 Issue:1 04/01/24
Refer to
instructions
Wear eye
protection
Wear ear
protection
Ensure oil level
is correct before
rst use
WARNING:
High Voltage
WARNING:
Hot surface
WARNING:
Automatic
start up
Indoor use only
DO NOT open
the air cock
before an air
hose is attached
8 DO NOT touch compressor cylinder, cylinder head or pipe from head to tank as these may be hot.
8 DO NOT use this product to perform a task for which it has not been designed.
8 DO NOT deface the certification plate attached to the compressor tank.
8 DO NOT cover the compressor or restrict air flow around the unit whilst operating.
▲ DANGER! DO NOT direct the output jet of air towards people or animals.
8 DO NOT operate the compressor without an air filter.
8 DO NOT allow anyone to operate the compressor unless they have received full instructions.
WARNING! The air tank is a pressure vessel and the following safety measures apply:
8 DO NOT tamper with the safety valve, DO NOT modify, weld or alter the tank in any way and DO NOT strap anything to the tank.
8 DO NOT subject the tank to impact, vibration or to heat and DO NOT allow contact with abrasives or corrosives.
WARNING! If an electrical fuse blows, ensure it is replaced with an identical fuse type and rating.
9 When not in use, store the compressor carefully in a safe, dry, childproof location.
2. INTRODUCTION
Aluminium cylinder head with cast iron cylinder gives added resistance to wear. Suitable for on site applications or anywhere that
requires 110V. Pump head directly coupled to heavy-duty induction motor for reliable and smooth operation. Fitted with fully automatic
pressure cut-out switch and twin gauges displaying tank and working pressures. Copper wound motor provides longer lasting
performance.
3. SPECIFICATION
4. PREPARATION
4.1. Remove compressor from packaging and inspect for any shortages or damage.
4.2. Confirm that the 110V voltage corresponds with the voltage
shown on the compressor data plate.
4.3. The compressor should be installed on a flat surface,
or one that does not exceed 10° either transversely or
longitudinally, (see fig.1) and should be in a position that
allows good air circulation around the unit.
IMPORTANT! The compressor is supplied without oil in it.
The oil is in a separate container. Remove the transit plug
from the oil filler aperture, pour oil into the aperture until it
has reached the correct level on the sight glass (fig.2B). Fit
the oil filler/breather supplied into the aperture.
DO NOT ATTEMPT TO RUN THE COMPRESSOR
UNTIL THIS HAS BEEN DONE.
4.4. Ensure that the air vent in the oil filler/breather is free from
debris. If the air vent is blocked, pressure can build up in
the crankcase causing damage to the compressor and
possible personal injury.
4.5. Fit the air filter into the inlet port if required (fig.4).
5. TOOL SELECTION
IMPORTANT Take care when selecting tools for use with the compressor. Air tool manufacturers normally express the volume of air
required to operate a tool in cubic feet per minute (cfm). This refers to free air delivered by the compressor (‘air out’) which varies
according to the pressure setting. Do not confuse this with the compressor displacement which is the air taken in by the compressor (‘air
in’). ‘Air out’ is always less than ‘air in’ - due to losses within the compressor - and so it is important that, before choosing equipment you
study the Free Air Delivery’ figures shown in the Specification Chart.
Model No: SAC5020E110V.V4
Max. free air delivery: 4.6(130)
Max. pressure: 116psi (8bar)
Minimum Rated Supply: 16A
Motor output: 2hp
Noise level (Noise Test Code: EN
ISO 2151:2008)
95dB(A)
Oil Capacity: 0.27L
Air displacement cfm(L/min): 6.3(178).
Phase: 1ph
Supply: 110V16A
Plug Type: Yellow - 16A-2P+E
Power Supply Cable Length: 1.8m
Receiver capacity: 50L
Recommended oil: ISO100
Dimensions (W x D x H): 650 x 390 x 669mm
Supply: 110V/16A
Original Language Version
© Jack Sealey Limited
SAC5020E110V.V4 Issue:1 04/01/24
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Additional Specication:
Short circuit current rating for each incoming power supply: 14A
Type of distribution system in the system: TN
Full load current for each incoming supply: 12A
Intended media: Air
Inlet intermediate pressure and temperatures: 0.1MPA. 10 – 40°
Inlet discharge pressure and temperatures: 0.8MPA. 10 – 40°
Maximum pressure ratio: 0.8MPA
Pressure limits of the lubrication system: 0.1MPA.
Temperature limits of the lubrication system: 0.8MPA. 70°
Maximum speed of the unit: 2850RPM
Minimum speed of the unit: 2750RPM
.
6. OPERATION
WARNING! ENSURE THAT YOU HAVE READ, UNDERSTOOD AND APPLIED SECTION 1 SAFETY INSTRUCTIONS.
6.1. Make sure that the main switch (fig.3.1) is ‘OFF’ (down).
6.2. Check the oil level by looking through the sight glass (See fig.2B).
6.3. Ensure that the tank drain valve is closed (fig.5).
6.4. Close the outlet pressure regulator by turning the knob clockwise (fig.3.2).
6.5. Connect the air tool required to the compressor via an air line connected to the air outlet.
6.6. Plug the mains cable into the mains supply and start the compressor by pulling up the main switch (fig.3.1).
6.7. Allow the pressure in the tank to rise to the maximum at which point the compressor will automatically cut out. Tank pressure is shown on
the larger gauge (fig.3.5).
6.8. Begin to gradually open the regulator by turning the knob until the small gauge registers the required operating pressure specified for the
tool to be used. Always adjust up to the required pressure rather than down from a higher pressure. The required setting, once achieved,
can be locked by screwing the locking ring (fig.3.3) up tight underneath the adjusting knob.
6.9. You can now begin to use the tool. The compressor will operate automatically cutting in and out as required to restore the air pressure in
the tank. The pressure switch (fig.3.7) stops the motor when the maximum tank pressure is reached and restarts it when pressure falls
below the minimum threshold - approximately 2bar (29psi) less than the maximum pressure.
Note: a) If the motor does not cut in and out, but runs continuously when using an air appliance, the capacity of the compressor may be
too small for the appliance.
b) The main gauge (fig.3.5) indicates the pressure inside the main tank, NOT the pressure supplied to the air equipment, which is
shown on the smaller gauge (fig.3.4). Should the pressure in the main tank exceed the pre-set switch (fig.3.7) maximum, the safety valve
(fig.3.6) will activate.
WARNING! For this reason DO NOT tamper with, or adjust, the switch or the safety valve.
6.10. When the compressor is not being used set the regulated
pressure to zero so as to avoid damaging the pressure regulator.
6.11. To stop the compressor press down the main switch (fig.3.1).
6.12. When the compressor stops there will be a whistling sound as compressed air is vented from the compressor head.
8 DO NOT, other than in an emergency, stop the compressor by switching off the mains power, or by pulling the plug out, as the pressure
relief will not then occur and motor damage may result upon restart.
6.13. When you have finished using the compressor unplug the unit from the mains power supply.
6.14. Set the outlet pressure on the regulator to zero.
6.15. Remove the air line and air tool.
6.16. The tank must now be drained. This will release the air left in the tank and drain away condensation that may have formed within the
tank. Choose a suitable location for this operation and/or make provision to collect the condensation. Wear ear and eye protection.
Open the tank drain valve (See fig.5) slowly allowing air and moisture to bleed from the tank. After bleeding close the drain valve to
prevent debris building up in the valve.
WARNING! Water that is allowed to remain in the tank during storage will corrode and weaken the air tank which could cause the tank to
rupture. To avoid serious injury drain the tank after each use or daily.
g.3
2 3
7
6
5
4
1ON OFF
AIR OUT
Original Language Version
© Jack Sealey Limited
Maintenance
Operations
Daily 100 hrs. 200 hrs. 500 hrs.
Drain condensation
•
Check oil level
•
Clean intake filter
•
Check for oil leaks
•
Check cut-out
•
Replace oil
•
General cleaning of
compressor
•
Replace air filter
•
Check tube fittings and
electrical connections
•
SAC5020E110V.V4 Issue:1 04/01/24
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g.5
6.17. SAFETY FEATURES
Thermal cut out: If the unit overheats the thermal cut out will operate and shut the unit down. Allow the unit to cool down then press the
reset button, located just inside the pump cover (fig.7).
7. MAINTENANCE
WARNING! Before performing any maintenance operation, switch the compressor off, disconnect from electricity supply and release all
air from the tank. In order to keep the compressor in good working condition, periodical maintenance is essential.
9 Restrict availability of keys or tools to skilled or instructed persons only.
7.1. After the first 50 working hours replace the lubricating oil - see paragraph 7.4.
7.2. OPERATIONS TO BE CARRIED OUT DAILY:
a) Drain condensation, place a container under the valve and open the valve by turning anti-clockwise (fig.5). Re-tighten the valve.
b) Check that all nuts and bolts are tight, particularly those retaining the crankcase and cylinder head.
7.3. OPERATIONS TO BE CARRIED OUT EVERY 100 HOURS: (or more frequently, if the compressor operates in a very dusty
atmosphere):
a) Check oil level and, if necessary, top up.
b) Remove the filter element (fig.4) and clean by blowing through with an air line at low pressure, from the clean side.
Alternatively, wash in soapy water, rinse and dry. DO NOT operate the compressor without the filter as foreign bodies or dust could
seriously damage the pump.
c) Check for oil leaks
7.4. OPERATIONS TO BE CARRIED OUT EVERY 200 HOURS:
a) Replace the lubricating oil. For oil specifications see below. Remove the oil filler plug (fig.2A) and undo the drain bolt (fig.2C), draining
the oil into a container. Drain when the compressor is hot so that oil drains rapidly and completely.
Incline compressor to ensure complete drainage. Replace the drain bolt and refill with fresh oil through the filler aperture. DO NOT overfill.
Replace plug (fig.2A).
Recommended oil for compressors, Suitable for room temperatures ranging from +5ºC to +25ºC. SEALEY CPO or equivalent SAE 40
compressor oil. Room temperature below +5ºC: SAE 20 compressor oil.
WARNING! Never mix different oils and do not use non-detergent/low quality oils as the compressor may be damaged. Dispose of waste
oil only in accordance with local authority requirements.
b) Check the automatic cut-out at max. pressure and the automatic cut-in at 2 bar below.
7.5. Operations to be carried out every 500 hours:
a) Replace air filter.
b) Check all tube fittings and electrical connections.
IMPORTANT! Failure to carry out maintenance tasks may invalidate the warranty on your compressor. Inspection of pressure tank both
inside and out.
7.6. Under the PRESSURE SYSTEMS SAFETY REGULATIONS 2000, it is the responsibility of the owner of the compressor to initiate a
system of inspection that both defines the frequency of the inspection and appoints a person who has specific responsibility for carrying
out the inspection.
IMPORTANT WARNING - Air contaminants taken into the compressor will aect optimum performance. Example: Body ller dust or
paint over spray will clog the pump intake lter and may cause internal damage to pump/motor components. Please note that any parts
damaged by any type of contamination will not be covered by warranty.
8. TROUBLESHOOTING
Original Language Version
© Jack Sealey Limited
SAC5020E110V.V4 Issue:1 04/01/24
g.6
g.7
FAULT CAUSE REMEDY
1A) Pressure drop in the tank. Air leaks at connections. Run compressor to max. pressure, switch off
Brush soap solution over connections and look for
bubbles. Tighten connections showing leaks
If problem persists contact Authorised Service Agent.
1B) Pressure drop in the tank. Air leaks from safety valve. Operate the safety valve manually by pulling on the
ring. If valve continues to leak when in the closed
position it should be replaced.
1C) Pressure drop in the tank. Air leaks from cylinder head gasket. Check tightness of head bolts. If leak continues
contact Authorised Service Agent.
Original Language Version
© Jack Sealey Limited
SAC5020E110V.V4 Issue:1 04/01/24
Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 sales@sealey.co.uk www.sealey.co.uk
WEEE REGULATIONS
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic
Equipment (WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact
your local solid waste authority for recycling information.
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specications and component parts
without prior notice. Please note that other versions of this product are available. If you require documentation for alternative versions, please
email or call our technical team on technical@sealey.co.uk or 01284 757505.
IMPORTANT: No Liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which is required for any claim.
ENVIRONMENT PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be
sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment. When
the product becomes completely unserviceable and requires disposal, drain any uids (if applicable) into approved
containers and dispose of the product and uids according to local regulations.
2) Pressure switch valve leaks when
compressor is idle.
Non-return valve seal defective. Empty the air tank. Referring to fig.6, remove the
non-return valve cap (3), spring (2) and seal (1)
Clean the seal and its seat, or if necessary replace
the seal.
3) Air leaks from tank body or tank welds. Internal corrosion caused by infrequent tank
draining or non permitted modifications to
tank.
Tank could rupture or explode. Cannot be repaired
DISCONTINUE USE IMMEDIATELY.
4A) Motor stops and will not restart. Thermal cut out has operated. Allow unit to cool for 30 minutes, then press reset
see fig.7.
4B) Motor stops and will not restart. Supply fuse has tripped. Reset fuse and restart unit. If repeated tripping
occurs replace the check valve or contact
Authorised Service Agent.
5) Compressor stops and does not restart. Motor failure. Contact Authorised Service Agent.
6A) Compressor does not stop at max. pres-
sure.
Pressure switch fault. Contact Authorised Service Agent.
6B) Compressor does not stop at max. pres-
sure.
Filter clogged.
Head gasket or valve fault.
Replace filter element.
Contact Authorised Service Agent.
7) Compressor noisy with metallic knock. Bearing or piston damage. Contact Authorised Service Agent.
8) Excessive moisture in discharged air. High humidity environment. Drain tank after each use.
