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The version may be changed only by specialized and authorized personnel by carefully following the
instructions that follow:
2. Rotate the mechanical part by 180°, and reposition the rear crankcase cover so that the oil dipstick is facing
upwards; reposition the lifting bracket and the related closing caps in the upper part of the crankcase;
finally, correctly reposition the identification plate in its appropriate seat on the crankcase.
Be sure that the lower draining holes on the crankcase near the plungers are open, and not
closed by the plastic caps as required for the previous version.
3. Join the hydraulic part with the mechanical part as indicated in Chapter 2, paragraph 2.2.5 of the
repair manual.
9.4 Hydraulic Connections
In order to isolate the system from the vibrations produced by the pump, we advise to build the first section of the duct
near the pump (both for intake and delivery) with flexible hose. The consistency of the intake section must allow to avoid
deformation caused by the depressurization produced by the pump.
9.5 Pump Feeding
To obtain the best volumetric efficiency, a minimum positive head of 0.20 meters is required.
9.6 Suction Line
For the pump’s correct operation, the suction line must have the following characteristics:
1. Minimum internal diameter as indicated in the diagram in paragraph 9.9, and in any case equal or greater
than the pump head’s value.
Along the duct, avoid localized diameter reductions that may cause pressure drops with subsequent cavitation.
Absolutely avoid 90
0
elbows, connections with other hoses, bottlenecks, counter-slopes, upside down “U” shaped
curves, “T” connections.
2. The selected lay-out must allow to avoid cavitation.
3. It should be perfectly airtight, and built in a way that guarantees perfect sealing over time.
4. Avoid pump emptying when stopping (even partial emptying).
5. Do not use hydraulic-type fittings, 3 or 4 way fittings, adapters, etc., since they may hinder the pump’s
performance.
6. Do not install Venturi tubes or injectors for detergent intake.
7. Avoid the use of standing valves, check valves, or any other type of one-way valves.
8. Do not connect the bypass line from the valve directly to the pump suction line.
9. Provide appropriate baffle plates inside the tank in order to avoid water flows coming from both the bypass
and feeding lines may create turbulence near the tank’s outlet port.
10. Make sure that the suction line is perfectly clean inside before connecting it to the pump.
GENERAL PUMP
A member of the Interpump Group
KF SERIES
For negative prevalence contact Customer Service Department
Serial #10127003 and later
Ref 300763 Rev. F
08-21
