Check The Low-Pressure Water Pressure Gauges; Replace The Water Filters - Hypertherm HyPrecision Predictive P-15 Operator's Manual

5 – Preventive maintenance

Check the low-pressure water pressure gauges

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).
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

Do this every 1,000 hours.
Replace all of the filters at the same time.
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
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)
Do this task when the pump is not running.
HyPrecision Predictive waterjet pump Operator Manual 810120
1
1
Prefilter water-pressure gauge
2
Postfilter water-pressure gauge
2
Recommended materials
Bucket or pail
93