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The motor insulation material is class "B" (PF* and TF*) or "H" (TW*) for compressor models
covered in these guidelines.
4.2.4 Protection devices
Independently from the internal motor protection, fuses must be installed before the compressor.
The selection of fuses has to be carried out according to VDE 0635, DIN 57635, IEC 269-1 or
EN 60-269-1.
4.2.5 Crankcase heaters
IMPORTANT
Oil dilution! Bearing malfunction! Turn the crankcase heater on 12 hours
before starting the compressor.
A crankcase heater is required when the system charge exceeds the compressor charge limit,
listed in Table 3.
Compressor model
ZH04K1P & ZH05K1P
ZH06K1P to ZH12K1P
ZHI05K1P to ZHI14K1P
ZH15K1P & ZH19K1P
ZHI18K1P & ZHI23K1P
ZHI27K1P to ZHI46K1P
Table
3:
Refrigerant charge limit
Figure 14: Crankcase heater location, models ZH04K1P to ZH19K1P and ZHI05K1P to ZHI23K1P
Figure 15: Crankcase heater location, models ZHI27K1P to ZHI46K1P
NOTE: The crankcase heater must be turned on a minimum of 12 hours prior to starting
the compressor and must remain energised during compressor off cycles.
4.2.6 Soft starters
Soft starters can be used with the 20 to 40 hp Copeland Scroll compressors to reduce inrush
current. Soft starters should be selected in accordance with the soft starter manufacturer's
recommendations, taking into consideration ambient temperature, number of starts per hour, and
compressor amps. The maximum ramp-up time should not exceed 3 seconds.
C6.2.26/1013-1116/E
Refrigerant charge limit
Single compressor
systems
3.6 kg
4.5 kg
4.5 kg
7 kg
For compressor models
and ZHI05K1P to ZHI23K1P, the crankcase
heater must be mounted 10 to 40 mm above
compressor legs (see Figure 14).
For
compressor
ZHI46K1P, the crankcase heater must be
mounted below the oil removal valve located on
the bottom shell for tandem versions (see
Figure 15).
Refrigerant charge limit
Even Tandem systems
5.0 kg
6.3 kg
6.3 kg
10.9 kg
ZH04K1P to ZH19K1P
models
ZHI27K1P
to
17
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