Service Menu Parameters
66
Figure 48 Setpoints parameters screen - Page 6
SCR Control Type
—This parameter sets the control type for the SCR re-heats. If set to “Standard”
then the re-heats will modulate when the temperature is below setpoint based on the control settings.
If this parameter is set to “Tight” control then one compressor will be locked on and the re-heats will
modulate to offset the cooling capacity.
Start Compressor 1 / 2 at
—This parameter can be used when set to “Tight” control. It sets the acti-
vation point of the compressor.
Stop Compressor 1 / 2 at
—This parameter can be used when set to “Tight” control. It sets the deac-
tivation point of the compressor.
Compressor 1 / 2 stop delay
—This parameter sets the delay when the stop compressor setpoint is
met.
Cycle time
—This parameter is set from factory and should only be changed by an authorized Liebert
representative.
SCR Factor
—This parameter is set from factory and should only be changed by an authorized Lie-
bert representative.
Unit Diary—Large Display Only
Shows all entered program changes and maintenance performed on the unit.
Table 13
Unit diary parameters
Function
Range
Imperial (metric)
Large Display
Small Display
Page 1 of 1
Text entered with iST
(Liebert iCOM Service Tool)
N/A
-
SETPOINTS (pg 6 of 6)
to change parameter
to confirm
to select parameter
for next/previous unit
then
UNIT 01
PASSWORD (Actual Level 0)
????
SCR Control Type
Start Compressor 1 At
%
Stop Compressor 1 At
%
Compressor 1 Stop Delay
min
Start Compressor 2 At
%
Stop Compressor 2 At
%
Compressor 2 Stop Delay
min
Cycle Time
sec
SCR Factor
Actual SCR Request
%
S156
S157
S158
S159
S160
S161
S162
S163
S164
S165
S166
Summary of Contents for Liebert Challenger 3000
Page 2: ......
