2920 1257 04
9
Instruction book
Compressed air from the pulsation dampers will flow to
plunger (12) which causes unloading valve (UV) to open. The
air at the delivery side of the compressor is blown through
silencer (9) to atmosphere and check valve (CV) closes to
prevent venting of the pulsation dampers. The compressor
runs unloaded.
When the pressure in the pulsation dampers decreases to the
pre-set minimum pressure, the pilot valve closes. Control air
from the unloader plunger chamber is vented to atmosphere.
Unloading valve (UV) closes and compressed air is supplied
to the pulsation dampers again.
Fig. 1.13 Optional silencing hood
Fig. 1.14 Pack compressor with optional silencing hood
AV Air outlet valve
Dm Condensate drain valve
1 Silencing hood (standard option)
2 Electric cabinet
3 On/off switch
4 Air pressure switch with on/off switches
Figs. 1.13 and 1.14 Pack - silencing hood
Fig. 1.15 LE/LF/LT ETROL
Fig. 1.16 LE/LF/LT PETROL
AF Air filter
AV1 Air outlet valve
Dm Condensate drain
valve
Gp Air pressure gauge
Me Electric motor
Mp Petrol motor
PD Pulsation damper
RV Pilot valve
UA Unloader
1 Lifting yoke
2 Cylinder
3 Towing handle
4 Blow-off silencer
5 Cover
6 Air inlet silencer
7 Fuel tank
Figs. 1.15 and 1.16 LE/LF/LT E Trolley
1
3
2
AV
Dm
50955F
2
4
1
50956F
Mp
7
1
5
AF
6
2
4
PD
Dm
AV1
3
Gp
50958F
RV
65
AF
1
3
Me
4
PD
UA
Dm
50957F
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