Dustcontrol 14124x, Original Instructions Manual

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Part No 94153-G DC 11-Module - 53
Service
Service points
1. Lubrication of lower bearing P and S models
(always)
2. Lubrication and review of vacuum valve (al-
ways)
(not
fi tted to S models)
3. Filter change ( fi ne fi lter, always)
4. Micro fi lter (optional)
Constant speed:
2a. Lubrication and inspection of vacuum valve
(not fi tted to S models) (always).
DC Green System:
2b. Checking of sensors
3. Filter replacement (
fi ne fi lter, always)
4. Micro HEPA fi lter (optional)
EN
G
LI
S
H
Test Running TPR
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
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.