Start-Up - Trane CGAM Installation & Operation Manual

Unit Start-Up Procedures
Stopped to Starting:
The stopped to starting diagram shows the timing from a
stopped mode to energizing the compressor.The shortest
allowable time would be under the following conditions:
6. No motor restart inhibit
7. Evaporator Water flowing
8. Power up Start DelayTimer has expired
9. Adjustable Stop to StartTimer has expired
10. Need to cool
The above conditions would allow the compressor to start
in 60 seconds.
Important: If both suction and discharge pressures are
low but sub-cooling is normal, a problem
other than refrigerant shortage exists. Do
not add refrigerant, as this may result in
overcharging the circuit.
Figure 103. Chiller state chart
CGAM Sequence of Operation:
Chiller State Chart
Shutting Down

Start-Up

NOTICE:
Equipment Damage!
Ensure that the oil sump heaters are connected
properly and are operating properly for a minimum of
24 hours before starting. Failure to do so may result in
equipment damage.
If pre-start checkout has been completed, unit is ready to
start.
CG-SVX17E-EN
Compressor Damage!
Use only refrigerant specified on the unit nameplate (R-
410A) and OIL00080 (1 gallon). Failure to do so may
cause compressor damage and improper unit
operation.
Equipment Damage!
Ensure that the oil sump heaters have been operating
for a minimum of 24 hours before starting. Failure to do
so may result in equipment damage.
Stopped
or
Run Inhibit
Stop Command or Diagnostic
Running
or
Running Limit
Check for
Differential
to Stop
1. Press the STOP key on the CH530.
2. As necessary, adjust the setpoint values in the CH530
menus usingTechView.
3. Close the fused-disconnect switch for the chilled water
pump. Energize the pump(s) to start water circulation.
4. Check the service valves on the discharge line, suction
line, oil line and liquid line for each circuit.These valves
must be open (backseated) before starting the
compressors.
NOTICE:
NOTICE:
Power Up
Boot and
Self Test
Auto
or
Waiting to Start
Check for
Differential
to Start
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