Bitzer CT-120-3 Mode D'emploi page 51

Fig. 5: HS.85 screw compressor: Example showing the connection of SE-E* (e.g. SE-E4) in the terminal box and two SE-B* (e.g. SE-B2) in the
switch cabinet.
The polarity of the orange connection cables on the SE-B* protective device must be determined with a measuring device.
Legend for schematic wiring diagram
C1 Electrolytic capacitor
F7 Oil flow switch
F10 Oil filter monitoring
K1T Time relay "Oil supply monitoring" 20 s
after compressor start
R2 Discharge gas and oil temperature sensor
Permanently wired
Wired on site
2.5 "Lock out"/ "Reset"
"Lock out" means: The compressor is stopped and must be reset externally.
Before the reset, the cause of the fault must be determined and rectified. For resetting, voltage supply to the com-
pressor protection device must be interrupted for at least five seconds.
2.6 "Immediately"
"Immediately" means: The change of state occurs without time delay.
2.7 EN/UL 60730
• Devices conforming to EN/UL60730 must be additionally protected against cable short-circuits in the sensor
cable , i.e. they must be protected against too low resistance. A short-circuit in the temperature control circuit is
identified as a fault which causes the compressor protection device to lock out immediately .
• Compliance with EN/UL 60730 is mandatory for compressor approval according to UL 60335-2-34 (end use en-
vironment).
CT-120-3 // PDF Download 51