General - Trane R Series Installation, Operation And Maintenance Manual

Pre-Start Checkout
• For the External Auto/Stop function, install wiring from
remote contacts (5K14, 5K15) to the proper terminals
on the circuit board.
• Connect the power supply for the convenience outlet,
if it is separate from the evaporator heater.
NOTICE:
Equipment Damage!
Chilled Water Pump Interlock and External Auto/Stop
must be adhered to or equipment damage could occur.
• If alarm and status relay outputs are used, install leads
from the panel to the proper terminals on circuit board.
• If the emergency stop function is used, install low
voltage leads to terminals on circuit board.
• Connect separate power for the External Emergency
Stop option, if applicable.
• If the ice making-option is used, install leads on 5K18
to the proper terminals on 1U7.
• Connect separate power supply for ice making status
circuit, if applicable.

General

When installation is complete, but prior to putting the unit
into service, the following pre-start procedures must be
reviewed and verified correct:
WARNING
Hazardous Service Procedures!
The maintenance and troubleshooting procedures
recommended in this manual could result in exposure
to electrical, mechanical or other potential safety
hazards. Always refer to the safety warnings provided
throughout this manual concerning these procedures.
Unless specified otherwise, disconnect all electrical
power including remote disconnect and discharge all
energy storing devices such as capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power can not be inadvertently energized.
When necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been trained in handling live
electrical components perform these tasks. Failure to
follow all of the recommended safety warnings
provided, could result in death or serious injury.
NOTICE:
Equipment Damage!
Verify all connections are made. Loose connections
could result in overheating and under-voltage
conditions at the compressor motor.
RTAC-SVX01J-EN
1. Inspect all wiring connections in the compressor
power circuits (disconnects, terminal block,
contactors, compressor junction box terminals, etc.).
to be sure they are clean and tight.
2. Open all refrigerant valves in the discharge, liquid,
suction, oil and oil return lines.
NOTICE:
Compressor Damage!
Catastrophic damage to the compressor will occur if
the oil line shut off valve or the isolation valves are left
closed on unit start-up.
3. Check the power supply voltage to the unit at the main
power fused-disconnect switch. Voltage must be
within the voltage utilization range and also stamped
on the unit nameplate. Voltage imbalance must not
exceed 2%.
4. Check the unit power phasing L1-L2-L3 in the starter to
be sure that it has been installed in an "ABC" phase
sequence.
NOTICE:
Compressor Damage!
It is imperative that L1, L2, L3 in the starter be
connected in the A-B-C phase sequence to prevent
equipment damage due to reverse rotation.
5. Fill the evaporator chilled water circuit.Vent the system
while it is being filled. Open the vents on the top of the
evaporator waterbox while filling and close when
filling is completed.
NOTICE:
Proper Water Treatment!
The use of untreated or improperly treated water in
this equipment could result in scaling, erosion,
corrosion, algae or slime. It is recommended that the
services of a qualified water treatment specialist be
engaged to determine what water treatment, if any, is
required. Trane assumes no responsibility for
equipment failures which result from untreated or
improperly treated water, or saline or brackish water.
NOTICE:
Equipment Damage!
If using an acidic commercial flushing solution,
construct a temporary bypass around the unit to
prevent damage to internal components of the
evaporator.
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