Johnson Controls YORK YVAM 0350, Operation & Maintenance Manual

Page: 145 / 162

Note: This cooler has a low wattage onboard heater that is automatically controlled and
cannot be adjusted. The heater turns on at less than 40°F (4.4°C) and off at greater than
55°F (12.8°C). This heater does not need to be tested.
Testing UPS panel heating
About this task:
The UPS panel does not have a dedicated heater system. It relies on the exchange of coolant
with the chiller drive coolant loop to add heat to this panel. As a result, no heating testing can be
conducted for this panel.
To verify that the heating and cooling circuit is functioning, use the OptiView panel to navigate to
the appropriate screens for manually operating the coolant pumps for each cabinet.
1. Navigate to Home > VSD > VSD Details > Manual Cooling and select Enabled .
2. Verify that the VSD coolant pump is operating.
3. Navigate to
Home > VSD > Power Panel > Manual Power Panel Cooling and select Enabled .
4. Verify that the power panel coolant pump is operating.
5. Disable the manual operation of both pumps.
6. Note the correct operation of the pumps in
160.88-CL2 .
Automatic battery health test during shutdown
For periodic maintenance or to diagnose battery faults or warnings, a battery health test can be
performed. This test is initiated from the Power Panel screen of the OptiView panel to monitor
battery voltage while under a known load. This ensures that the battery has enough capacity left to
withstand a power failure event. The test is available though operator access level or higher.
1. At the keypad, log on at Operator access level using access level code
9 6 7 5
or a higher
level.
2. Navigate to Compressor > Power Panel screen.
3. On the Power Panel screen, make sure that the Start Battery Test button is shown. The
function is available when all of the following are true:
- Access level is Operator or higher
- Chiller state is Stopped
- Safety stop push-button is depressed
- The Local Run/Stop is set to Stop
4. To initiate the Battery Health Test, press the Start Battery Test button. When the Battery
Health Test is in progress, this button changes to a Cancel Battery Test button to cancel the
active Battery Health Test in progress if needed.
5. When the test begins, the panel instructs
UPS Battery Test - Disconnect 3-phase
line power to the chiller now . At that time, remove three-phase power to the
chiller. When the power is removed, the UPS becomes available for a limit of 10 minutes for
performance of the test.
6. When the panel detects that control voltage is low and UPS is in Inverter mode due to loss of
the line power, the panel displays UPS Battery Test - Evaluating Battery . The MBC
is then commanded to Levitation. After the MBC reports to OptiView that it is in Levitation
mode, the battery voltage is monitored for the next 60 seconds.
145 YVAM Control Center