Line Start Permanent Magnet Motor (Lspm) - Bitzer OCTAGON SL Series Operating Instructions Manual

3 (LP)
1/8-27 NPTF
1/4-18 NPTF
1/2-14 NPTF
Fig. 8: 4PSL-25K, 4NSL-30K
Connection points
1 High pressure connection (HP)
Connection for high pressure switch (HP)
2 Connection for discharge gas temperature
sensor (HP)
(4VE(S)-6Y .. 4NE(S)-20(Y): connection for
CIC sensor as an alternative)
3 Low pressure connection (LP)
Connection for low pressure switch (LP)
5 Oil fill plug
6 Oil drain
9 Connection for oil and gas equalisation
(parallel operation)
10 Connection for oil heating
11 Oil pressure connection +
12 Oil pressure connection –
16 Connection for oil monitoring (opto-elec-
tronic oil monitoring "OLC-K1" or differen-
tial oil pressure switch "Delta-PII")
21 Maintenance connection for oil valve
22 Pressure relief valve to the atmosphere
(discharge gas side)
23 Pressure relief valve to the atmosphere
(suction side)
24 Compressor module
SL Suction gas line
DL Discharge gas line
Tab. 6: Connection points
Dimensions (if specified) may have tolerances accord-
ing to EN ISO 13920-B.
KB-120-8
DL
56
5
367
21
SL
650
495 79
184
633
23

5 Line start permanent magnet motor (LSPM)

The compressors of the 4FME-7K .. 6PME-40K series
are also available with a line start permanent magnet
motor (LSPM). They are marked with the letters "U"and
"L" in the model designation (e.g. 6PMEU-40LK). The
built-in permanent magnets generate a non-negligible
magnetic field which, however, is shielded by the com-
pressor housing.
Fig. 9: Warning and prohibition signs on a compressor with perman-
ent magnet motor
Safety signs attached to the compressor
WARNING
Strong magnetic field!
Keep magnetic and magnetizable objects away
from compressor!
Persons with cardiac pacemakers, implanted
heart defibrillators or metallic implants: maintain
a clearance of at least 30 cm!
Work on a compressor with LSPM motor
Any work on the compressor may only be performed by
persons who are not part of the above-mentioned
group. Maintenance work beyond the work described in
these Operating Instructions and the Operating Instruc-
tions KB-104 may only be performed after consultation
with BITZER.
1 (HP)
304
1/8-27 NPTF
5
16
M20x1,5
Ø21 256
300
6
M 10 x1,5
10
Ø12
29