Leak Detection - Trane CSHD Installation Instructions Manual

CSHN/CSHL
• Before removing wires, mark them so that they can be
put back on the same terminal when the new
compressor is installed.
• Insure that the compressor model terminals are
installed on the correct terminals (see
• If the compressor is not wired properly, it will shut off
within five seconds.
• Proper torque for the terminal set screws and nuts is 30
in-lb.
• Before starting the compressor, check the electrical
phasing with a phase sequence meter similar to an
Ideal-Sperry Model 61-520.
Figure 11. CSHN/CSHL wiring diagram
L1
A
L2
L3 B
C
L1 L3 L2
POWER
SUPPLY
PHASING TO BE CONNECTED AS SHOWN TO
PREVENT REVERSE ROTATION
CSHD
The terminal blocks have red and blue marks for phase
identification. Compressor terminal T1 is red, compressor
terminal T2 is blue, and compressor terminal T3 is
unmarked. Depending on the unit type, several methods
of marking the wires may be used, colored wires, wire
color marks on the wire or wire numbers to indicated the
proper location of the wire on the compressor terminal
block.
If the wires are not marked, ensure that you mark them
prior to removing them so that they can be reinstalled in
the same position.
COM-SVN01D-EN
Figure 11, p.
BLACK
BLUE
RED
M1 M2
L1 L2 L3
COM
NO
CONTROL
VOLTAGE
TH- TH+
S1 S2
L
N
MODULE INPUT
CONTROL
VOLTAGE
CIRCUIT
Figure 12. CSHD wiring diagram
17).
Red mark
indicating T1
(Phase A)
• Ensure that the compressor model terminals are
installed on the correct terminals (see
• Proper torque for the terminal screws is 25 in·lb.
• Before starting the compressor, check the electrical
phasing with a phase sequence meter similar to an
Ideal-Sperry Model 61-520.
Improper Power Phasing!
Check phasing before starting compressor. Operating
the compressor with improper phasing could cause
compressor failure.

Leak Detection

Explosion Hazard!
Failure to follow these instructions could result in death
or serious injury or equipment or property-only
damage.
Use only dry nitrogen with a pressure regulator for
pressurizing unit. Do not use acetylene, oxygen or
compressed air or mixtures containing them for
pressure testing. Do not use mixtures of a hydrogen
containing refrigerant and air above atmospheric
pressure for pressure testing as they may become
flammable and could result in an explosion. Refrigerant,
when used as a trace gas should only be mixed with dry
nitrogen for pressurizing units.
Removal and Installation
Blue mark
indicating T2
(Phase B)
Unmarked
T3
(Phase C)
Figure
NOTICE
WARNING
12).
17