Cat Pumps Plunger Pump 3DNX25GSI

Clean Filters. Inspect and clean inlet filters on a regular schedule to avoid flow restriction. Use adequate mesh size for liquid and pump specifications.

Inlet supply exceeds the maximum flow being delivered by the pump

Inlet shut-off valve open and water supply turned on

Temperatures above 130°F are permissible

Add 1/2 PSI inlet pressure per each degree F over 130°F

Avoid closed loop systems especially with high temperature or ultra-high pressure

Inlet supply reservoir sized to provide adequate liquid to accommodate the maximum output of the pump

Adequate baffling in the tank to eliminate air bubbles and turbulence

Diffusers installed on all return lines to the tank

Fill crankcase with special CAT PUMP oil per pump specifications [1DX, 2DX, 3DX, 3DNX-8.5 oz.]

DO NOT RUN PUMP WITHOUT OIL IN CRANKCASE.

Change initial fill after 50 hours running period.

Thereafter, change oil every 3 months or 500 hour intervals, whichever comes first.

* If other than CAT PUMPS special multi-viscosity ISO68 oil is used, change cycle should be every 300 hours.

Enter the current running hours of the pump

Sign off on the pump lubrication

Fill crankcase with special CAT PUMP oil per pump specifications [1DX, 2DX, 3DX, 3DNX-8.5 oz.]. DO NOT RUN PUMP WITHOUT OIL IN CRANKCASE.

Enter the running hours of the pump

Was the oil changed after 50 hours running period?

Each system’s maintenance cycle will be exclusive. If system performance decreases, check immediately. If no wear at 1500 hours, check again at 2000 hours and each 500 hours until wear is observed. Valves typically require changing every other seal change. Duty cycle, temperature, quality of pumped liquid and inlet feed conditions all effect the life of pump wear parts and service cycle.

Remember to service the regulator/unloader at each seal servicing and check all system accessories and connections before resuming operation.

Sign off on the plunger pump maintenance