Service - Dustcontrol TPR 50 Manuel D'instructions

Service

6. Check that the axles, pump and motor are paral-
lel and the pulleys are true. The belts should not
run on an angle into the pulleys. The inclination
of the pump can be changed with screw (3), fi g
C.
7. The bearings of the turbopump should be
lubricated with Dustcontrol bearing grease for
turbopumps, Part No. 9928.
Lubrication Interval
Δ p
TPR 50
22 kPa 1500 h
25 kPa 1500 h
28 kPa 1000 h
30 kPa
40 kPa -
8. Disassemble the vacuum relief valve (D).
Clean and lubricate shaft and bearings.
Check the rubber gasket (E). Change
if cracked or harden (Par t No. 4710).
Check the func tion of the hydraulic
damper (F).
D
2.
E
Adjusting the vacuum relief valve
The valve is pre-adjusted with a negative pressure
(18 kPa). If this is to be adjusted the following
procedure is used:
- Connect a manometer to the suction side and
measure with fully closed inlet.
750 h
1.
4.
3.
TPR 50, 30 kW - 18
Lubrication
- The front bearing should be lubricated using
the grease nipple (4), fig (C). Press grease in
until it comes out along the axle.
- The back bearing should be lubricated by re-
moving the fi nned bearing cover plate (5) and
checking the condition of the grease. Fill the
cavity 2/3 full with new grease.
- Exchange the O-ring, Part No. 4789 and replace
the bearing cover plate.
F
- Shut down the pump and demount the vacuum
relief valve.
- Remove the damper cover (1) and measure
distance A.
- Loosen the locking nut (3) and adjust the
spring tension by turning the spring 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.
- Remount the valve after adjustment and test
the pressure.
9. Inspect all cables and connections, repair
if neccessary.
10. Remount the protective panels, power up
the pump and give it a test run.
Part No 9050