Pre-Start Checkout - Trane CGAM Installation & Operation Manual

Pre-Start Checkout

When installation is complete, but prior to putting the unit into service, the following pre-start
procedures must be reviewed and verified correct:
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injuryInspect all wiring
connections to be sure they are clean and tight.
•
Compressor Damage!
Do not operate the unit with the compressor, oil discharge, liquid line service valves and the
manual shutoff on the refrigerant supply to the auxiliary coolers "CLOSED" . Failure to "OPEN" all
valves may cause serious compressor damage.
•
•
Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it may be necessary
to work with live electrical components. Have a qualified licensed electrician or other individual
who has been properly trained in handling live electrical components perform these tasks.
Failure to follow all electrical safety precautions when exposed to live electrical components
could result in death or serious injury.
•
Table 59. Compressor oil sump heater summary
Heater Group
Compressor Oil Sump
(a) Not all heaters are present on all unit configurations. See schematics and component locations in
•
CG-SVX17D-EN
WARNING
Verify that all refrigerant valves are "OPEN"
CAUTION
Check the power supply voltage to the unit at the main power fused-disconnect switch. Voltage
must be within the voltage utilization range stamped on the unit nameplate. Voltage imbalance
must not exceed 2 percent. See
Check the unit power phasing to be sure that it has been installed in an "ABC" sequence. See
"Unit Voltage Phasing, " p.
WARNING
Verify that the compressor oil sump heaters are installed tightly around the compressor.
Energize and verify heaters are operational using a temperature probe. See
section"Unit Wiring," p. 183.
Verify that the VSD blanket and optional pump VSD heaters are operational. See
p. 142. Install jumper across thermostat and verify each heater is functioning. See section
Wiring, " p. 183 for component locations.
"Unit Voltage Imbalance, " p.
143.
(a)
Heater Description
Compr 1A, Ckt 1
Compr 1B, Ckt 1
Compr 1C, Ckt 1
Compr 2A, Ckt 2
Compr 2B, Ckt 2
Compr 2C, Ckt 2
143.
Table 59, p.
Heater
Designation(s)
3M1E1
3M2E1
3M3E1
4M1E1
4M2E1
4M3E1
141.
Table 60,
"Unit
141