Lutz DMP 1, Руководство по эксплуатации

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D
Check valve, gasket and o-ring maintenance
1. Flush the pump to be certain all corrosives or hazardous materials are removed. Remove
suction, discharge and air supply lines.
2. Remove the 1/4-20 nuts (item 28) and slide the six cap screws (item 27) that hold the
pump together out of the pump. Remove the #8 screws (item 5) from the left and right
manifold plates (items 1 and 19 respectively) and inspect the gaskets (item 2). The suction
(or lower) check valves are an integral part of the left and right chambers and should not
be dismantled. # replacement of the valve seats is necessary, items 6 and 8 which contain
the valves must be replaced. The upper discharge valve disks (item 3) are not sealed into
the chambers and may be inspected for wear. If any components are worn or scratched,
replace. Note: Due to the distortion of gaskets under pressure, gaskets may need to be
replaced after pump has been disassembled to assure a positive seal.
3. To inspect manifold tube o-rings (item 17) remove right chamber (item 18).
4. Both diaphragms (item 9) can be inspected after removing the right and left chamber
(item 6). If diaphragms appear worn or ruptured go to step 7. If diaphragms do not need
replacing, proceed with steps 5 and 6.
5. To reassemble: Insert the discharge valve disks into place. Press gaskets into groove in
chambers.
6. Align left and right manifolds on the bosses of the cambers. Secure to each chamber with
the (5) #8 screws. Slide left chamber tubes through intermediate. Position o-rings on the
end of the tubes. Lubricate o-rings and right chamber holes. Slide a flat washer (item 26)
onto each of the (6) capscrews and insert through the entire assembly. Secure with a flat
washer (item 26), and a tension washer (item 29) under each not. Tighten to 6.8 Nm.
Apply torque evenly.
GB
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