HyPrecision Predictive waterjet pump Operator Manual 810120 93
5 – Preventive maintenance
Preventive maintenance
Check the low-pressure water pressure gauges
The prefilter water-pressure gauge shows the water pressure before the water goes through the filters. The
postfilter water-pressure gauge shows the water pressure after the water goes through the filters.
The usual operating range is 2.8 bar to 7.6 bar (280 kPa to 760 kPa / 40 psi to 110 psi).
Do this task when the pump is running
Subtract the value shown on the postfilter water pressure from the value shown on the prefilter water pressure.
Replace the water filters if the difference between the values on the prefilter water-pressure gauge and the
postfilter water-pressure gauge is lower than 0.7 bar (70 kPa / 10 psi).
Replace the water filters
HyPrecision P-50S/P-60S/P-75S pumps have 3 filters. HyPrecision P-15/P-30/P-50 pumps have 2 filters.
Parts, tools, and materials
Do this task when the pump is not running.
Replace the water filters after every 1,000 hours of operation or if the difference between the values on the prefilter
water-pressure gauge and the postfilter water-pressure gauge is lower than 0.7 bar (70 kPa / 10 psi).
Do this every 1,000 hours.
Replace all of the filters at the same time.
1
Prefilter water-pressure gauge
2
Postfilter water-pressure gauge
1-15470 Water filter cartridge, 0.22 micron,
10 inch
1-11106 Water filter cartridge, 1.0 micron,
10 inch
1-11107 Water filter cartridge, 10 micron, 10 inch
(HyPrecision P-50S/P-60S/P-75S pumps only)
Filter wrench
(included in the 11-12084 HyPrecision standard
tool kit)
Recommended materials
Bucket or pail
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