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B: Special Section for KIB120 Systems
Compressor Priority Switch - For KIB12023 and KIB12043. These KwiKool
models have 2 compressors and refrigerant circuits that operate independently of each
other and are staged to come on at different intervals as needed for cooling. Your
KwiKool KIB120 is equipped with a Compressor Priority Switch located on the top of
the control box in the evaporator access compartment. The rocker switch is factory set
to use compressor 1 as the first stage compressor or lead compressor on start up, and
compressor 2 as the second stage or lag compressor. The lag compressor comes on
when the demand requires it. The rocker switch when moved to the compressor 2
position reverses the order of the lead and lag compressors. This allows for rotation of
the compressors for even wear. Change this switch position at regular intervals. Factory
recommendation is approximately every 6 months. Turn off the power to the unit
before changing this switch position.
Evaporator Fan Rotation - On KIB120 models without the optional factory installed
phase monitor, you will have to visually confirm the rotation direction of the cold air
supply fan and correct if needed. As you face the front control panel of the KwiKool
unit, open the left side evaporator access door with the system in the OFF position.
Secure the door from closing and keep clear any objects from the moving or rotating
parts. Select FAN mode on your control pad and turn the system ON briefly and then
OFF. The supply air fan should be rotating in a clockwise direction from this view. If
rotating counterclockwise, qualified personal should disconnect power at the source
and exchange any incoming line voltage wire with any other line voltage wire and repeat
the previous instructions. Operating your KwiKool unit with the supply air fan rotating
incorrectly will cause low performance and evaporator coil freezing.
Note: KwiKool units with a factory installed phase monitor have already been set for
rotation. Users will be notified of incorrect rotation by an audio and visual alarm that will
clear automatically when the phase issue is corrected by exchanging the line voltage
wire as described above in this section.
Supply Air Fan Speed - KIB120 models are 2 stage systems and have a fan speed
for each stage. This is not user settable. This system always start on 1st stage fan
speed (low) in COOL or FAN MODE, second stage fan speed (high) only operates in
COOL MODE when the second stage compressor is running.
VFD (Variable Frequency Drive) - Used on KIB120 models to optimize the
operation of the condenser fan by slowing down and speeding up the rotations of the
blower to maintain the best pressure needed to operate in your environment. Located in
the left side evaporator access compartment as you face the control panel. This
displays the current operating frequency or any error message needed for fault diagno-
sis. Call Factory Technical support for guidance.
** DO NOT TAMPER WITH OR ATTEMPT TO ADJUST THIS SYSTEM**
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