Installation
6. Using two wrenches, connect the return (green) gas line to the compressor’s return gas
coupling. Torque the coupling as stated in the previous step.
Figure 6 Connect Gas Line to Compressor or Manifold
7. Leak check all Aeroquip couplings. See the Leak Check procedure.
8. Read the equalization pressure. Compare it to the equalization pressure stated in the
Specifications section.
9. Connect the other system components according to the instructions supplied for them.
Connect the cold head power cable(s) to the cold head receptacle(s) on the front of the
compressor.
After the installation procedures for all system components have been completed, startup can
begin.
Remote On/Off Cable (Optional Accessory)
A remote on/off cable can be furnished as an accessory. See the Parts section for part number.
1. Disconnect the power to the compressor.
2. Remove the heat shrink cap from one end of the remote on/off cable. Connect the cable to
customer’s remote switch. Use the green conductor to ground the switch box. Switch
voltage will be the same as the customer’s power source, single phase. See Figure 9,
Electrical Schematic Diagram.
3. Connect the other end of the cable to the accessory receptacle on the compressor.
4. Reconnect the compressor to its power source.
The system can now be operated from the compressor or from customer’s remote switch.
When using the customer’s remote on/off switch, the power switch on the compressor must
be in the stop (off) position.
5. To verify that the cable installation is correct, close customer’s remote switch. Run the
system for one minute, then stop.
When customer’s remote switch starts the compressor, it cannot be stopped by
the compressor’s power switch. Open the compressor’s circuit breaker to stop it
locally. When the compressor is started at the compressor power switch, it
cannot be stopped at the remote on/off switch.
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