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FAULT
Reduced vacuum.
Inverse rotation of the vacuum
pump, with vacuum in the tank.
Excessive continuous knocking
noise.
Overheating of the vacuum
pump.
The pump does not reach rated
pressure, or gets stuck.
Excessive consumption of
disposable oil.
If the fault persists, apply to an authorized service centre.
Before demolition of the vacuum pump, the following materials must be separated:
- lubricating oil;
- rubber and plastic parts;
- cast iron, steel and aluminium parts;
these must be disposed of appropriately.
• Do not dump the vacuum pump in the environment.
• To dispose of lubricating oil, apply to the special treatment services.
Do not use parts dismantled as scrap for spare parts.
Failure to follow this warning relieves the manufacturer of all responsibility and constitutes negligent
use of the product.
7788-0038-0
ENGLISH
TROUBLESHOOTING
CAUSES
Leakage or partial obstruction in
the system components.
The vanes are stuck in their seat.
No lubrication.
Non-return valve not hermetically
sealed.
Excessive vane wear.
No lubrication.
The vanes are stuck in their seat.
Rev speed too low.
Operation conditions too harsh or
continuous.
Suction of liquids, mud or foreign
bodies.
Use gaskets.
REMOVING FROM SERVICE AND SCRAPPING
- 28 -
REMEDIES
Check the valves and elements in
the system.
Flush the vacuum pump with
diesel
fuel (see page 25).
Check the level of the disposable
oil
and dripping of the oiler.
Apply to an authorized service
centre.
Change the vanes. Apply to an
authorized service centre.
Check the level of the disposable
oil.
Flush the vacuum pump with
diesel
fuel (see page 25).
Increase the number of revs to
above 1500 rpm.
Let the pump cool. Apply to an
authorized service centre.
Flush the vacuum pump with
diesel
fuel (see page 25).
Apply to an authorized service
centre.
04/03
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