Pump Solutions Group Neptune Series 600 dia-PUMP MODELS 610 thru 647 - Manual (Page 12)

SECTION III
PUMP MODELS 610 AND 615
NORMAL MAINTENANCE
7.0 MAINTENANCE
Under normal conditions, the “dia-PUMP” should not require any significant amount of maintenance. It is advised that
periodic visual observations be made of the oil level to made sure that it is within ¼” of the dipstick mark. The liquid
end of the pump should also be inspected for leakage. These observations should be made regularly.
The hydraulic fluid should be drained and replaced twice a year, using the drain plug (FIG. #0130) at the back of the
pump. This charge can be scheduled with the normal factory maintenance at seasonal periods.
7.0.1 Check Valves: Removing, cleaning, replacing.
The “dia-PUMP” incorporates a unique check valve design whereas the discharge and suction piping
NEED NOT be disturbed in order to service the valves.
7.0.11 Remove discharge cap (FIG. #1412).
7.0.12 Remove ball retainer (FIG. #1424) using 5/16” Allen wrench.
7.0.13 Remove discharge valve cartridge (FIG. #1460) using special wrench provided. Be certain
that valve “O” ring (FIG. #1442) is removed with valve cartridge.
7.0.14 Remove suction cap (FIG. #1428).
7.0.15 Remove suction valve cartridge (FIG. #1460) using special wrench provided. Be certain that
valve “O” ring (FIG. #1442) is removed with valve cartridge.
7.0.16 Clean valve cartridges with suitable solvent. The valve cartridge is a complete and integral
unit and should not be disassemble for cleaning if the valves are found to be worn and in need
of replacement; an entire valve cartridge in either suction or discharge should be ordered. The
suction valve is the longer of the two valve cartridges.
7.0.17 To replace, reverse above procedure using a small amount of grease to hold valve ‘O” rings in
place. Do not over tighten the valve cartridges as this could damage the valve “O” rings.
REFER TO DRAWING ON PAGE 18.
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