Instructions
PCH COMPRESSORS
1 | © Danfoss | DCS (CC)| 2018.04
8510287P01B - FRCC.PI.054.A2.02
The compressor must only be used for its designed purpose(s) and wit-
hin 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 nitrogen gas pressure (between 0.3
and 0.7 bar) and hence cannot be connected as is; refer to the «assem-
bly»
section for further details.
The compressor must be handled with caution in the vertical position (maxi-
mum offset from the vertical : 15°)
This Danfoss scroll compressor motor is protected by an external module protecting against phase loss/reversal, over heating and high current draw.
MPM
S
SSH
CC
SS
LPS
UNIT
CONTROLLER
KM
Legend :
Fuses ............................................................................... F1
Compressor contactor ...............................................KM
Control relay .................................................................KA
Safety lock out relay .................................................... KS
Optional short cycle timer (3 min) ..................... 180 s
External overload protection .................................... F2
Pump-down pressure switch .....................................LP
High pressure safety switch.......................................HP
Control device ...............................................................TH
Liquid Line Solenoid valve .....................................LLSV
Discharge gas thermostat ......................................DGT
Fused disconnect .........................................................Q1
Motor safety thermostat ......................................... thM
Compressor motor ....................................................... M
Motor Protection Module ..................................... MPM
Thermistor chain.............................................................S
Safety pressure switch .............................................. LPS
Control circuit ..............................................................CC
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.
A
: Model number
D
: Supply voltage, Starting current & Maximum operating current
B
: Serial number
E
: Housing service pressure
C
: Refrigerant
F
: Factory charged lubricant
Map PCH065 R410A SH 5 K
V
apor Injec
tion
Condensing t
emper
atur
e (°C
)
Evaporating temperature (°C)
-40
5
10
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
35
Non Injection Area
1 – Introduction
This instruction pertain to the Danfoss PCH
scroll compressor used for heat pump systems.
It provides necessary information regarding
safety and proper usage of this product.
2 – Handling and storage
• Handle the compressor with care. Use the
dedicated handles in the packaging. Use the
compressor lifting lug and use appropriate and
safe lifting equipment.
•
Store and transport the compressor in an
upright position.
• Store the compressor between Ts min and Ts
max values for LP side indicated on compressor
nameplate.
• 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.Check before assembly that the
compressor does not show any obvious signs of
deterioration that could have occurred during
inappropriate transportation, handling or sto-
rage
• The compressor ambient temperature shall
not exceed Ts max value for LP side indicated
on compressor nameplate during off-cycle.
• Mount the compressor on a horizontal flat
surface with less than 3° slope. The compres-
sor must be mounted with flexible grommet
(single applications). Refer to the PCH guide-
line to know the tightening torques that must
be applied.
• Verify that the power supply corresponds to
the compressor motor characteristics (see
nameplate).
• When installing PCH, 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.
A
D
E
F
B
C
