Dustcontrol DC 11-Module Instrucciones Originales página 57

Service
Constant Speed(2a):
D
2.
E
Constant Speed:
Check the function of the hydraulic damper (F).
Adjusting the vacuum relief valve (not DC
11-Module S models)
The valve is pre-adjusted with a negative pressure of
(18 kPa). If this needs to be adjusted the fol-
lowing procedure should be used:
- Connect a manometer to the suction side
and measure with a fully closed inlet.
- Shut down the pump and demount the
vacuum relief valve.
- Remove the damper cover (1) and mea-
sure distance A.
- Loosen the locking nut (3)
1.
Vacuum relief valve (not DC 11-Module S
4.
Disassemble the vacuum relief valve (D).
Clean and lubricate shaft and bearings. Check
the rubber gasket (E). Change if cracked or
3. harden ed (Part No. 4710).
F
-
plate (4).
The compression of the spring (2) determines the
opening pressure. Changing the distance A by 1.5
mm will give a corresponding change in pressure
of 1 kPa.
-
-
-
DC 11-Module - 57
models)
Adjust the spring tension by turning the spring
Remount the valve after adjustment and test
the pressure.
Inspect all cables and connections, repair if
neccessary.
Remount the protective panels, power up the
pump and give it a test run.
Part No 94153-G