198 HyPrecision Predictive waterjet pump Operator Manual 810120
9 – Installation
Installation
Utilities
Electrical power
The motor size determines the full load amperes, the overload settings, and the wire sizes. Refer to your pump
model in the
Pump specifications section or to the system schematic drawing.
Supply water
For minimum and maximum flow rates, pressure, and temperature specifications, refer to the
Pump specifications
section, which begins on page 177.
Check local codes to determine if a backflow prevention valve is necessary to separate the pump from the
facility’s potable water.
Water quality
Before installing this equipment, do a water quality analysis. Water quality reports that show pH, silica, and
hardness levels are frequently available for no charge from public utility water suppliers.
Softened water is necessary for most systems. Get advice from a specialist for recommendations for choosing a
water treatment system. Reverse osmosis systems are available from Hypertherm.
Test the water quality
Parts, tools, and materials
1. Take a sample from the WASTE WATER OUT hose. If you can not access he hose, take a sample of the supply
water going into the pump. Make sure that the water is clear and odorless.
2. Test the pH. The optimal pH measurement is between 6.0 and 8.0.
3. Test the silica (SiO
2
) content. The silica content must be lower than 0.0015% (15 parts per million [ppm]).
4. Test the water hardness. The result must be equal to or lower than 0.006% (60 ppm / 3.5 grains per gallon).
5. Test the total dissolved solids (TDS) concentration. Refer to Test the low-pressure water TDS level on
page 95 for instructions. The optimal range is 0.005% to 0.015% (50 ppm to 150 ppm).
WARNING
All installation, repairs, and maintenance of the electrical and plumbing systems must obey
national and local codes. This work should be done only by an approved technician.
It is the buyer's responsibility to investigate and obey all local codes.
WARNING
A line disconnect switch for incoming electrical power must be installed near the power supply.
This is a supply-voltage disconnecting device or an energy-isolating device.
CAUTION
The primary feed circuit breaker or fuse must be the correct size to control inrush and
steady-state current.
Use a motor-start circuit breaker or an equivalent if time-delay high-inrush fuses are not
permitted by national or local codes.
Do not use deionized water unless the system has stainless steel water fittings. Deionized water
can cause the plumbing parts to fail.
1-13897 TDS meter
Container for a water sample
Clean, deionized water or filtered water
pH tester
Silica test kit
Water hardness (calcium carbonate) test kit
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