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SECTION 5

TROUBLESHOOTING

p. 5-6

05148382

5.5 SPECIAL PROCEDURE—HP WATER CHECK VALVE TROUBLESHOOTING

5.5.1 HP Check Valve Troubleshooting

A leaking HP check valve is suspected if either HP cylinder or sealing head is

unusually hot. Compare temperatures of opposing sealing heads or HP

cylinders to decide location of hot spot. Note any heat in LP water.

The display will tell you which direction is pumping faster. If the leak is bad

enough, the intensifier will shut down and the display will tell you where to

look for the problem. For instance, if the display indicates a Left Stroke

Warning or Shutdown, the probable problem is either at Left Inlet Valve or

Right Discharge Valve. You can usually confirm which it is by feeling heat on

one side or another.

NOTE:

The bolted flange / metal-to-metal seal arrangement of the SL-IV Plus sealing

head make the INLET check valves much more difficult to access for

maintenance than the HP OUTLET check valves. Therefore one should

generally rule out problems with the OUTLET HP check valves prior to

disassembling the INLET check valves.

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KMT SL-IV PLUS Series Specifications

General