Crystal T-1-CPF Hydraulic Comparator Instrukcja Użytkownika Pobierz pdf (Strona 17)

Support  15

Type T Pump Operation Manual

Support

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TROUBLESHOOTING

Failure to Pump

Problem: The pump fails to develop pressure when the hand lever is operated.

Solution: Verify that the vent valve is closed and that there is sucient uid in the reservoir. If necessary, add uid through the ll plug and follow the

Pump Priming Procedure.

If the failure continues, one or both of the check valves may be leaking. Use the following procedure to replace both the high pressure and low pressure

o-rings.

To Replace the Check Valve O-rings

1 Raise the pump handle to the top of its stroke.

2 Position the valve rod selector for the o-ring you wish to replace.

(a) Pull out the valve rod selector to select the low pressure/high volume setting.

(b) Push in the valve rod selector to select the high pressure/low volume setting.

3 Remove the check valve plug you wish to replace.

4 Replace the o-ring located on the check valve plug.

Low pressure/high volume check valve plug o-ring. High pressure/low volume check valve plug o-ring.

5 Slowly pump two and one-half strokes, positioning the pump lever at approximately 45 degrees, halfway through its stroke.

6 Allow system uid to ow out of the low pressure check valve, ushing entrapped air.

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