WIKA CPP7-H Manual De Instrucciones página 19

7. Maintenance and cleaning
To replace/clean the O-ring at the rear, proceed as follows:
1. Open the screw
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2. Turn the hand test pump (with the opening
case with the palm of the hand.
⇒
The non-return valve, consisting of the valve plunger, O-ring and spring, falls out of
the opening.
The non-return valve consists of very small components! To avoid any loss,
place a container under the test pump!
3. Clean the O-ring at the valve plunger or, if worn, replace it.
4. Re-insert the non-return valve consisting of the valve plunger, O-ring and spring.
CAUTION!
Damage to the hand test pump due to incorrect mounting
Incorrect insertion of the non-return valve may lead to damage of the test
pump!
▶
Use tweezers when inserting the valve plunger/spring!
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Lightly tap the side of the pump case until the valve plunger/spring is
seated correctly.
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Pay attention to the correct order of the components (see Fig. 1 "Inserting
the non-return valve")!
▶
Do not interchange the screws from both non-return valves!
WIKA operating instructions, model CPP7-H
at the rear of the pump.
downwards) and gently tap the pump
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EN
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