38
Systems, Controls and Operations
Model C602
Step 5
Monitor the level of glycol mixture in the tank and to
be sure all air pockets are removed, continue to add
more as necessary to maintain a 2/3 full level. Allow
the unit to operate for a short period of time. Once
the service hose starts to empty glycol back into the
accumulator tank, the system is properly filled.
Remove the jumper from the pins marked, “W4”.
Release the pliers.
Step 6
Remove the service hose and replace the cap on
the 1/4” flare fitting. Replace the accumulator tank
cap.
Step 7
Check for glycol mixture leaks.
Replenishing the Glycol Mixture
Note: If the accumulator tank is empty, follow the
steps outlined in “Installing the Glycol Mixture”. If the
unit needs replenishing, complete the following
steps:
Step 1
Remove the cap from the glycol accumulator tank.
Step 2
Replenish the glycol mixture until the tank is 2/3 full.
Step 3
Replace the cap on the accumulator.
Step 4
Check for glycol mixture leaks.
Draining the Glycol Mixture
Step 1
Attach a service hose (capable of depressing the
shraeder valve) to the 1/4” access fitting. Allow the
opposite end of the hose to rest in an empty bucket.
Step 2
Using a pair of pliers, squeeze the tube located
between the access fitting and the tube leading to
the bottom of the glycol accumulator tank.
Step 3
Remove the cap from the top of the accumulator
tank. The glycol will begin to flow into the bucket.
Step 4
Remove the necessary panels to expose the shake
interface board. Locate the test pins marked, “W2,
W3, W4, and W5”. Place a two pin jumper on the
test pins marked, “W4”.
Step 5
Once the glycol mixture stops flowing into the
bucket, replace the cap on the glycol accumulator
tank.
Step 6
Disconnect the outlet line from the glycol pump.
Blow air or nitrogen through the outlet line from the
glycol pump. This procedure will fully drain the
system.
Step 7
Once the system is fully drained, remove the service
hose and replace the access cap. Replace the outlet
line of the glycol pump to proper position. Remove
the pliers.
Figure 83
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