Schreiber Chillers Hypertherm Part No 039104 - Manual (Page 24)

24
Water Supply Requirements
Schreiber Water Chiller
The water chilling system is designed to operate in conjunction with a Hypertherm
Plasma Cutting System. The chiller has the same water supply requirements as the
plasma system. Maintaining the water purity level to meet the specifications of the
plasma system is compatible with the operation of the chiller. Shown below is the Water
Purity Specifications as found on page 3-3 of the Hypertherm Manual.
Water Purity Measurement Methods
Water Purity
Conductivity
µS/cm
at 25 o C
Resistively
mΩ~cm
at 25 o C
Dissolved
Solids
(ppm of NaCl)
Grains per
Gallon
(gpg CACO
3
)
Pure Water
(ref.only) 0.055 18.3 0 0
Maximum Purity 0.5 2 0.206 0.010
Minimum Purity 18 0.054 8.5 0.43
Max Portable
Water
(Reference only) 1000 0.001 495 25
MAINTENANCE INFORMATION
1. There are no lubrication points on the chiller. All motors have permanent
lubrication in the bearings.
2.
The water that is used in the chilled water circuit has the same specification as
required by the plasma system. The water should be clean and some type of
water conditioner can be used. Nothing should be used in the chilled water circuit
that could damage the all copper Heat Exchanger.
3.
The air cooled condenser should be cleaned on a regular basis, depending on
the environment the chiller is installed in.
4.
The water level should be maintained as close to the level as marked on the
water sight glass. You cannot damage the refrigeration system by the water
being at a low level, it will only effect the efficiency of the unit.
5.
Caution: The compressor receivers and water pump could be hot enough to
injure one touching these components.
6.
The dial thermometer is reading the temperature of the discharge chilled water.