Extended Shutdown
The refrigerant should be transferred into the storage vessel (if supplied; see Pumpout and Refrigerant Transfer Procedures) in order to reduce machine pressure and possibility of leaks. Maintain a holding charge of 5 to 10 lbs (2.27 to 4.5 kg) of refrigerant to prevent air from leaking into the machine.
If freezing temperatures are likely to occur in the machine area, drain the chilled water, condenser water, and the pumpout condenser water circuits to avoid
Leave the oil charge in the machine with the oil heater and controls energized to maintain the minimum oil reservoir temperature.
After Extended Shutdown
Be sure that the water system drains are closed. It may be advisable to flush the water circuits to remove any soft rust which may have formed. This is a good time to brush the tubes if necessary.
Check the cooler pressure on the LID default screen, and compare to the original holding charge that was left in the machine. If (after adjusting for ambient temperature changes) any loss in pressure is indicated, check for refrigerant leaks. See Check Machine Tightness section.
Recharge the machine by transferring refrigerant from the storage tank (if supplied). Follow the Pumpout and Refrigerant Transfer Procedures section. Observe
