KB-120-8
29
346
385
367
184
142
342
56
6
M
x1,5
10
10
Ø12
1/2-14 NPTF
Ø21
1/8-27 NPTF
633
304
300
256
19
1 (HP)
16
M20x1,5
SL
DL
23
21
5
1/4-18 NPTF
3 (LP)
1/8-27 NPTF
378
5
79
650
495
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 conn
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.
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. 6PME
U
-40
L
K). 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.
