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 da-
tasheet 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 (maximum
offset from the vertical : 15°)
© Danfoss | DCS(CC) | 2016.04
FRCC.PI.036.A2.021 - 8510278P01B
Danfoss MLZ/MLM116 scroll compressors compressors’
motors are protected by an external module protecting against phase loss/reversal, over heating
and high current draw.
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
A1
A3
A2
MPM
S
KS
Wiring diagram without pump-down cycle
LPS
A1
A3
A2
MPM
S
LPS
Wiring diagram with pump-down cycle
LP
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
D
B
C
E
F
A
: Model number
D
: Supply voltage, Starting current & Maximum operating current
B
: Serial number
E
: Housing service pressure
C
: Refrigerant
F
: Factory charged lubricant
R404A
R22
0
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
SH = 10K
RGT = 20°C
0
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
SH = 10K
RGT = 20°C
Danfoss scroll compressors
MLZ/MLM116
Instructions
