Preparing for prolonged shutdown
If the chiller is to be shut down for an extended period of time, for example over the winter season,
complete the following procedure:
1. Test all system joints for refrigerant leaks with a leak detector. If any leaks are found, repair
the leaks before allowing the system to stand for a long period of time. During long idle
periods, periodically check the tightness of the system.
2. If freezing temperatures are encountered while the system is idle, carefully drain the cooling
water from the cooling tower, condenser, condenser pump, and the chilled water system-
chilled water pump and coils. Open the drains on the evaporator and condenser liquid heads
to ensure complete drainage. Drain the VSD cooling system.
3. On the setup screen, disable the clock. This conserves the battery.
4. Open the main disconnect switches to the VSD, condenser water pump, and the chilled water
pump. Open the disconnect on the side of the power panel to disconnect the storage battery.
Ensure that the control center is powered off.
Restart after prolonged shutdown
The chiller has a start inhibit limit for storage battery minimum voltage below 12.8 VDC when
charging. Ensure that the chiller has line power and battery disconnect restored at least eight hours
before first planned start-up to charge the battery.
For information on water flow rate limits, refer to Engineering Guide, Form 160.84-EG1.
YMC
2
Mod B with OptiView Control Center
26
To Next Page
Loading...
Need help?
General
