The compressor must only be used for its
designed purpose(s) and within its scope of
application (refer to «operating limits»).
Consult Application guidelines and datasheet
available from cc.danfoss.com
Under all circumstances,
the EN378 (or other
applicable
local
safety
regulation)
requirements
must be fulfilled.
The compressor is delivered under ni-
trogen gas pressure (between 0.3 and
0.7 bar) and hence cannot be connec-
ted as is; refer to the «assembly»
section
for further details.
The compressor must be
handled with caution in the
vertical position (maximum
offset from the vertical : 15°)
FRCC.EI.020.A1.02 © Danfoss Commercial Compressors 02/12
1
Performer
®
PSH019-023-026-030-034-039 compressors are protected against overheating and
overloading by an internal safety motor protector. However, an external manual reset overload
protector is recommended for protecting the circuit against over-current. The compressors come
equipped with an electronic board OCS (Operating Control System) controlling liquid injection and
a liquid injection valve assembly.
CC
L1 L2 L3
KM
Q1
A1
A2
DGT
HP
KS
KS
KA
KA
KA
LPS
LPS
KA
KS
KM
A3
180s
OCS
M
T3
T1
T2
F1
F1
Legend:
Fuses...........................................................................................F1
Compressor.contactor..........................................................KM
Control.relay............................................................................KA
Safety.lock.out.relay............................................................... KS
Optional.short.cycle.timer.(3.min)................................. 180.s
High.pressure.safety.switch.................................................HP
Fused.disconnect....................................................................Q1
Compressor.motor.................................................................. M
Discharge.gas.temperature..............................................DGT
Safety.pressure.switch......................................................... LPS
Control.circuit..........................................................................CC
Operating.Control.System................................................. OCS
Wiring diagram without pump-down cycle
InstructIons PsH
comPressors PsH019-023-026-030-034-039
Installation and servicing of the compressor by qualified personnel only. Follow
these instructions and sound refrigeration engineering practice relating to installation,
commissioning, maintenance and service.
1
2
3
E
F
C
D
A
B
A
: Model number
D
: Supply voltage, Starting current & Maximum operating current
B
: Serial number
e
: Housing service pressure
c
: Refrigerant
F
: Factory charged lubricant
1
: Liquid Injection Valve
2
: Liquid Injection Valve connection
3
: Oil sight glass
15
20
25
30
35
40
45
50
55
60
65
70
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
To (°C)
Tc
(°
C)
SH 5K
1 – Introduction
These instructions pertain to the Performer® PSH
scroll compressors, models PSH019-023-026-
030-034-039, used for heat pump and air-condi-
tioning systems. They provide necessary infor-
mation regarding safety and proper usage of this
product.
2 – Handling and storage
• Handle the compressor with care. Use the
compressor lifting lugs and use appropriate
and safe lifting equipment.
• Avoid any shocks to the liquid Injection valve
during handling operations.
• Store and transport the compressor in an
upright position.
• Store the compressor between -35°C and 50°C.
• Don’t expose the compressor and the packa-
ging to rain or corrosive atmosphere.
3 – Safety measures before assembly
Never use the compressor in a flammable
atmosphere.
• The compressor ambient temperature may
not exceed 50°C during off-cycle.
• Mount the compressor on a horizontal flat
surface with less than 3° slope.
• Verify that the power supply corresponds to the
compressor motor characteristics (see nameplate).
• When installing PSH, use equipment specifi-
cally reserved for HFC refrigerants which was
never used for CFC or HCFC refrigerants.
• Use clean and dehydrated refrigeration-grade
copper tubes and silver alloy brazing material.
• Use clean and dehydrated system components.
• The piping connected to the compressor must
be flexible in 3 dimensions to dampen vibrations.
4 – Assembly
• In parallel assemblies of PSH the compressor
requires a rigid mounting on the rails. Use the
pre-mounted rigid spacers.
• Slowly release the nitrogen holding charge
through the schrader port.
• Connect the compressor to the system as
soon as possible to avoid oil contamination
from ambient moisture.
