Removal and Installation
COM-SVN01D-EN
17
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
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.
Figure 12.
CSHD wiring diagram
•
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.
NOTICE
Improper Power Phasing!
Check phasing before starting compressor. Operating
the compressor with improper phasing could cause
compressor failure.
Leak Detection
WARNING
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.
PHASING TO BE CONNECTED AS SHOWN TO
PREVENT REVERSE ROTATION
MODULE INPUT
VOLTAGE
POWER
SUPPLY
CONTROL
CIRCUIT
L1
L3
L2
BLACK
BLUE
RED
L1
L3
L2
A
B
C
L1
L3
L2
M1
NO
M2
COM
CONTROL
VOLTAGE
TH-
S1
TH+
S2
N
L
Blue mark
indicating T2
(Phase B)
Red mark
indicating T1
(Phase A)
Unmarked
T3
(Phase C)
