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8.0 PERIODIC MAINTENANCE
8.1 Cleaning and storage of the pump
Do not let your fluid dry in the pump or in the hoses. It may harm the pump. Clean the pump regularly by
pumping a suitable solvent for your fluid until the pump is cleaned. Make sure the fluids you are using
are compatible with your diaphragm material. If you are not going to use the pump for a long period,
clean the pump and relieve the pressure.
8.2 Tightening the screw connections
Inspect damage to the hoses before every use and change if necessary. Check all the screw
connections for tightness and seals against leak. Check the screw connections every two months and
re-tighten with proper torque. First tighten the fluid cover screws than the manifold screws. Tighten
the screws applying the proper torque from the torque chart. (Fig. 7)
8.3 .Daily maintenance
1- Check the air filter and regulator.
2- Check if there is water or moisture in the filter.
3- Check the air pressure set value of the pressure regulator.
4- After you finish work, clean the pump by pumping a suitable solvent for your fluid until the
pump is cleaned.
8.4. Weekly maintenance
1- Apply the instructions for daily maintenance.
2- Clean the check valve balls and ball seats.
3- Clean the exhaust.
8.5.Monthly maintenance
1- Check the valve balls diameter. Check the inner diameter of the ball seats.
2- Ball diameter must be bigger (at least 1.5 mm) than the inner diameter of the seat. Both of
them must have a smooth surface.
3- If there is capacity decrease change both the balls and seats.
4- Check the pilot valve and the o-rings.
5- Check diaphragms.
6- Clean the wetted parts of pump.
7- After 500 hours of operation or once a month stop the pump. Relieve the pump pressure.
Remove the air hose. Apply 2 drops of suitable oil to the pump air valve inlet and insert the air
hose again.
CAUTION !
The extra oil is emitted from the exhaust. The exhausted oil may
dirty the pumped fluid and environment.
18
Figure 13b - Pilot valve repair.
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