SB-110-4
46
in 24 hours. Interrupt the voltage supply for at least five
seconds to reset the compressor protection device.
▶ Connect the power voltage supply of the compressor
protection device to terminals L and N. Required
voltage see name plate of compressor protection
device.
▶ Install a reset button into the cable of the voltage
supply at terminal L.
▶ Integrate the compressor protection device with ter-
minals 11 and 14 into the safety chain of com-
pressor.
▶ Terminal 12 is the signal contact of compressor fault.
Technical data
• allowable ambient temperature: -30°C .. +60°C
• Allowable relative humidity: 5% .. 95%, non-con-
densing (EN60721-3-3 class 3K3 and 3C3)
• Maximum allowable altitude: 2000 m
• Further information see Technical Information
ST-120.
5.4.2
HS.85: Protection devices for operation with
FI
SE-i1 or SE-E2 is required for operation with frequency
inverter (FI) and soft starter (at a ramp time < 1 s). For
schematic wiring diagrams for FI operation with SE-i1,
see Technical Information CT-110. For schematic wir-
ing diagrams for FI operation with SE-E2, see Tech-
nical Information ST-122.
5.4.3
Safety switching devices for limiting the
pressue (high pressure switch and low
pressure switch)
• Are required for securing the application range of the
compressor in order to avoid unpermissible operat-
ing conditions.
• For connection positions see connection diagrams.
• and perform a test to exactly check them.
▶ Connection positions see dimensional drawings.
▶ Do not connect any safety devices to the mainten-
ance connection of the shut-off valve!
▶ Set cut-in and cut-out pressures according to the ap-
plication limits.
▶ Precisely check the setted cut-in and cut-out pres-
sures.
High-pressure and low-pressure switches
A pressure limiter and a safety pressure limiter are re-
quired for securing the compressor's application range
in order to avoid unacceptable operating conditions.
• HS.85: Connecting the high pressure switch to posi-
tion 1 (HP), connecting the low pressure switch to
position 2 (LP) see chapter Connections and dimen-
sional drawings, page 41.
• HS.95: Connecting the high pressure switch to posi-
tion 1 (HP). Depending on local regulations, installa-
tion of a low pressure switch may not be necessary.
The compressor module is provided with an auto-
matic low-pressure cut-out function.
5.4.4
Monitoring the oil circuit HS.85
Integrated oil management system HS.85
!
!
NOTICE
Lack of oil leads to too high an increase in tem-
perature.
Risk of damage to the compressor!
HS.85 compressors are equipped with an integrated oil
management system. This avoids the necessity to in-
stall additional components and safety devices in the oil
line leading to the compressor (oil filter, oil flow switch,
solenoid valve), thus reducing the number of brazed
joints in the oil line and, consequently, the risk of leak-
age. In addition, this feature simplifies the system lay-
out. The oil management system includes:
• Oil supply monitoring.
• Oil filter monitoring.
Connections see figure 10, page 46
F7
F10
Fig. 10: HS.85: Connections for integrated oil management system
