Danfoss MLZ Instructions Manual page 2

Instructions
Danfoss scroll compressors
MLZ/MLM116
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
70
65
60
55
SH = 10K
50
45
RGT = 20°C
40
35
30
25
20
15
10
5
0
-35 -30 -25 -20
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
FRCC.PI.036.A1.02
A: Model number
B: Serial number
C: Refrigerant
installation, commissioning, maintenance and service.
Under all circumstances, the
EN378 (or other applicable local
safety regulation) requirements
must be ful lled.
R22
-15 -10 -5 0 5 10
A1
A3
A2
KS
Wiring diagram without pump-down cycle
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
A
B
C
D: Supply voltage, Starting current & Maximum operating current
E: Housing service pressure
F: Factory charged lubricant
Installation and servicing of the compressor by quali ed personnel only. Follow
these instructions and sound refrigeration engineering practice relating to
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.
70
65
60
SH = 10K
55
50
45
40
35
30
25
20
15
10
5
0
-35 -30
15
LPS
MPM
S
The compressor must be
handled with caution in the
vertical position (maximum
o set from the vertical : 15°)
R404A
RGT = 20°C
-25 -20 -15 -10 -5 0
LPS
A1
A3
A2
LP
Wiring diagram with pump-down cycle
Motor safety thermostat ................................................... thM
Compressor motor ................................................................. M
Motor Protection Module ............................................... MPM
Thermistor chain.......................................................................S
Safety pressure switch ........................................................ LPS
D
E
F
5 10 15
MPM
S
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