Danfoss PSH Serie Instructions page 2

Instructions - PSH Compressors
PSH019-023-026-030-034-039
1: Liquid Injection Valve
2: Liquid Injection Valve connection
3: Oil sight glass
Danfoss PSH019-023-026-030-034-039 compressors are protected against overheating and overloa-
ding 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.
70
65
60
SH 5K
55
50
45
40
35
30
25
20
15
-35 -30 -25 -20
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
1 – Introduction
These instructions pertain to the Danfoss PSH
scroll compressors, models PSH019-023-026-030-
034-039, used for heat pump and air-conditio-
ning systems. They provide necessary informa-
tion regarding safety and proper usage of this
product.
2 | © Danfoss | DCS (CC) | 2018.02
2
1
3
A: Model number
B: Serial number
C: Refrigerant
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.
-15 -10 -5 0 5
To (°C)
Under all circumstances,
the EN378 (or
applicable
regulation)
must be fulfilled.
2 – Handling and storage
• Handle the compressor with care. Use the com-
pressor 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.
A
B
D: Supply voltage, Starting current & Maximum operating current
E: Housing service pressure
F: Factory charged lubricant
10 15 20 25 30
The compressor is delivered under ni-
trogen gas pressure (between 0.3 and
other
0.7 bar) and hence cannot be connect-
local safety
ed as is; refer to the «assembly» section
requirements
for further details.
CONTROL CIRCUIT
F1 F1
KA KS
KA KA
A1
A3
LPS
180 s
A2
OCS
J1
HP
KS
TH
KM KA KS
Wiring diagram without pump-down cycle
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
The compressor must be
handled with caution in the
vertical position (maximum
offset from the vertical : 15°)
• Store the compressor between -35°C and 70°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 at-
mosphere.
FRCC.PI.020.A2.02
D
E
F
L1 L3 L2
Q1
T1 T2
J2
J3 J5 T3
PT1000
M
85 52 019 - A