Reddot 12VDC User manual

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12
VDC (RD-2-7979-0)/ 24VDC
(RD
-2-7980-0) COMPRESSOR
KIT
12VDC (RD-2-7979-0) / 24VDC (RD-2-7980-0) COMPRESSOR
INSTALLATION INSTRUCTIONS
NOTE:
1. Please read instructions all the way through before beginning work. Not following these instructions may result in
voided warranty.
2. This air conditioning compressor only takes R-134a refrigerant and ZEROL ESTER POE 68SL refrigerant oil.
3. Electric Compressors must be covered to protect from weather elements or any moisture.
4. Check that all items called out on the RD-2-7979-0/ RD-2-7980-0 accessory kit list have been included.
5. It is critical that minimum 4GA cable be used for the compressor power/ground runs.Direct connection to battery or
nearby terminal blocks with proper fuse protection is required. Fuse and fuse holder areprovided in the installation
kit. Maximum 26 foot runs allowable for 4GA cable. Using larger wire is acceptable, but voltage drop must be
considered. Using cables smaller than 4GA may result in voided warranty and/or damage to vehicle.
A. Installing The Compressor
WARNING: NEVER RUN THE COMPRESSOR WITHOUT REFRIGERANT
a. Unit is wired for negative ground.
b. Compressor Power and Ground Cables must be minimum 4GA.
c. Fused power source must be used or warranty may be voided.
INSTALLATION INSTRUCTIONS

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1. Determine the most suitable location for mounting the air conditioning compressor and secure the unit. Note that
the compressor must be positioned with minimal tilt (8° side to side and 5° front to back maximum) to ensure
proper internal lubrication while running.
2. Connect the positive ring terminal cable of the compressor to the middle slot of the relay. Bolt down the ring
terminal with an M6 lock washer (RD-5-6971-0) and M6 nut (RD-5-6619-0).
3. Use the short 4 AWG cable (RD-2-7782-0) to connect the 100A (24V)/150A (12V) fuse to therelay. Securely bolt down
the relay with nut 10-32 (RD-5-4073-0).
4. Connect a 4GA Red power cable with ring terminal connection to the open position of the 100A (24V)/150A (12V) fuse,
reinstall M5 nut and lock washer (torque 35-44 in-lb), and reinstall fuse cover (RD-5-16418-0P).
5. Connect the negative end of the compressor to a terminal junction block (RD-5-16826-0). The negative terminal of the
vehicle power source would connect to this terminal via a minimum 4 AWG cable.
6. Remove the M6 nut and lockwasher from the black groundingterminal block near the compressor, attach a 4GA black
ground cable with ring terminal,and reinstall M6 lock washer and nut (max. torque: 60 in-lb).
7. The Compressor comes with a preset default speed (medium). The speed of the compressor can be varied to a
slower or faster setting. This can be achieved by adjusting the jumper connection on the 4 pin connector (RD-5-
16443-0). Currently a jumper exists between the Green and Black connection for the medium (3500R/min)
compressor speed setting, however
a. Connecting Red and Black gives a slower (2500 R/min) speed setting.
b. Connecting Orange and Black gives a faster (4500R/min) speed setting.
ELECTRICAL SCHEMATIC

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B. Plumbing Setup
1. The compressor has a 2 ports shown in the diagram above. Note the suction port has a larger intake fitting (size 10)
than the discharge (size 8). Also listed above are the Pad fittings that are suitable for the input and output ports and
their respective hose nipple size
2. Below are instructions to properly assemble Aeroquip E-Z Clip hose assemblies. Note the recommended torque for the
Size #10 O-ring fitting is 29-37 N-m (21-27 lb-ft) and for the size #8 O-ring fitting is 20-27 N-m (15-20 lb-ft) as recorded
in the Table below.

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3. Route the crimped hoses and pads to the proper inlet/outlet, use an M6 (RD-5-4556-0) washer and M6 (RD-5-5743-0-
Fitting
#6 Fitting
#8 Fitting
#10 Fitting
#12 Fitting
#14 Fitting
Torque Setting (N-
m)
12-15
20-27
29-37
38-41
41-48

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25) screw to mount the pad onto the inlet/outlet (torque 70-90 in-lb). The compressor discharge hose runs to the
condenser inlet while the Suction hose runs from the evaporatorvia the expansion valve outlet.
PLUMBING SCHEMATIC
C. Final Assembly And Check
1. Evacuate the system, test forleaks and chargewith R-134a.
2. Connect the Battery.
3. Turn the ignition switch tothe “on” position, turnthe thermostat to the coldest point and the fan switch to “high”.
a. The compressor should click onand be engaged.
4. Turn the thermostat off and compressor should disengage.
5. Check thermostat to be sure compressorcycleson and off.

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DISTRIBUTED BY:
Red Dot Corporation
495 Andover Park East
Seattle, WA 98188
P: [phone]
www.rdac.com