Bitzer SE-i1, Technical Information, Page: 10 / 56

CT-110-2 10
Low pressure transmitter
• First, screw in the T-piece into the connection posi-
tion 3 (LP) on the compressor.
• Then, screw the low pressure transmitter to the T-
piece and connect the sensor cable.
1/8-27 NPTF
3 (LP)
Fig. 4: CS.95 compressor: Mounting of the low pressure transmitter
Legend for connection positions, see table 2, page 9.
5.1.2 Mounting/replacement of oil temperature sensor
(PTC) with discharge gas or oil temperature
sensor (NTC) on CS. compressors
CAUTION
Before mounting or replacing the oil temperat-
ure sensor (PTC), drain the oil from the oil ser-
vice valve (position 5).
See also the notes given in the Operating In-
structions SB-170.
Replace the pre-installed oil temperature sensor (PTC)
with the enclosed discharge gas or oil temperature
sensor (NTC). For this, unscrew the PTC sensor and
mount the NTC sensor at the same position and con-
nect it using the corresponding cable.
4 / 8
1/8-27 UNF
5
1 1/8-18 UNEF NTC 1/8-27 NPTF
12
Fig. 5: CS. compressor: Replacing the PTC sensor with the NTC
sensor
Legend for connection positions, see table 2, page 9.
5.2 Mounting the components of the completion
sensor kit to HS. compressors
The wired and connected HS.64 .. HS.85 screw com-
pressors can be ordered ex factory either with the SE-
i1 basic sensor kit or with the full sensor kit. Scope of
functions, see chapter Monitoring functions, protective
functions and extent of delivery, page 4.
Therefore, all components of the completion sensor kit
must be mounted to the compressor only if:
• the basic sensor kit is to be upgraded to the full func-
tionality of the full sensor kit.
• the SE-i1 is retrofitted.
• the SE-i1 as a replacement for SE-C1 (HS.64 and
HS.74) or SE-C2 (HS.85) is upgraded to the full
functionality of the SE-i1.
For the HS.53 compressors, the SE-i1 is delivered sep-
arately as a basic sensor kit (part number 347 050 02).
It must be installed, wired and connected in the sys-
tem's switch cabinet, The cables between compressor
and switch cabinet must be protected by a fuse in the
terminal box. The fuse layout depends on the cable
cross-section and the applicable application-related
standards and can therefore not be universally spe-
cified.