Test The Low-Pressure Water Tds Level - Hypertherm HyPrecision Predictive P-15 Operator's Manual

5 – Preventive maintenance
13. Push the water filter purge buttons until water comes out from under each button.
14. On the operator interface, touch the
15. Make sure that 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).
16. Monitor for leaks.

Test the low-pressure water TDS level

Do this every 1,000 hours.
A TDS level that is lower than 0.005% (50 ppm) can harm waterjet parts and requires the use of
nonmetallic or stainless steel fittings.
A TDS value of lower than 0.0005% (5 ppm) can damage stainless steel parts.
If a water line, a fitting, or a valve could be frozen, do not operate the pump. Thaw the equipment
until water moves easily through the water circuit.
Treat water with a TDS level that is higher than 0.015% (150 ppm) with reverse osmosis.
Some TDS meters must be calibrated before use. For best results, calibrate the meter at 25.0°C (77°F). Refer to
the instructions supplied with the TDS meter.
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If multiple readings are taken, turn OFF the TDS meter between readings.
Parts, tools, and materials
1-13897 TDS meter
Container for a water sample
Clean, deionized water or filtered water
Do this task when the pump is off.
1. Remove a water supply tube from the intensifier.
When a low-pressure fitting is disconnected, water could spray from the fitting.
2. Turn the pump in cooling mode.
ON
3. Take a sample of the water from the supply tube. Make sure that the water is clear and odorless.
4. Install the water supply tube.
HyPrecision Predictive waterjet pump Operator Manual 810120
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RUN
Recommended materials
Bucket or pail
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