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4.4 Safety devices
The following safety devices are provided and may not be modified in any way.
■ Safety relief valve:
The safety relief valve protects the machine from excessive pressure build-up. It is factory set.
■ Covers over moving parts and electrical connections:
These protect against accidental contact.
4.5 Compensator
The compensator functions as follows:
■ Inlet and outlet connections to silencers and accessories,
■ Isolates the machine vibrations from the air pipeline.
Fig. 9 Compensator
4.6 Filter maintenance indicator
The maintenance indicator shows when the filter needs maintenance. When the filter becomes
clogged and flow resistance rises to a set point, the maintenance signal is given.
4.7 Pressure gauge
The pressure gauge shows the pressure in the blower block discharge port.
Fig. 10 Location of the pressure gauge
A
Machine with sound enclosure
B
Machine without sound enclosure
1
Pressure gauge
4
Design and Function
4.4
Safety devices
28
Installation and Operating Manual Rotary lobe blower
HBPI pr
Number: 9_9572 28 USE