TPR 50, 30 kW - 17
Part No 9050-A
Test Running
1. Verify that the power is locked out. Inspect the
belt tension (Figure B next page), rotate the
pump and listen for any sound indicating worn
bearings or misaligned impellers. Check that
the inlet and outlet are properly connected.
Also check that the vacuum relief valve is con-
nected.
2. Mount the covering panels. Check that no per-
sons can be hurt if the pump starts and that all
outlets are closed.
3. Connect a manometer for negative pressure
calibrated to min. -50 kPa to the suction side
as close to the pump as possible.
4. Power up the pump and listen carefully for the
following sounds; A high pitch whine is nor-
mal sound from the impeller blades. As pump
draws cooling air from the vacuum relief valve
a weak hissing should be heard.
5. Measure the pressure. Compare with the di-
mension point. The pressure can be adjusted
by adjustment of the vacuum relief valve. See
page 17 - Adjusting the vacuum relief valve.
6. Check the function and tightness of the con-
nected exhaust system.
7. Open the number of outlets the system is di-
mensioned for. The vacuum relief valve should
now be totally closed.
8. It is normal that the pump becomes hot during
operation.
The pump should be inspected at least twice a
year and lubricated according to the lubrication
intervals. See page 17.
1. Start the pump and listen for abnormal
sounds. When all outlets are closed a weak
hissing sound should be heard from the va-
cuum relief valve.
2. Shut off the pump and lock out the electrical
service.
3. Remove the protective panels from the pump.
4. Rotate the pump manually and listen for any
sounds indicating a worn bearing or misligned
impellers.
5. Check the condition and tension of the drive
belts. The drive belts are matched, therefore
new and old belts should never be used to-
gether. Always change the whole set. (A).
Changing the belts
-
Lift the motor mounting plate with nut (1).
- Change
belts.
-
Tighten the belts with nut (2) and adjust to the
tension illustrated (B).
Service
EN
G
L
IS
H
