Flooded type water cooled screw chiller (PCB Control)
79
(1) Pads have to extend the full length of the saddle when isolation pad be used.
(2) Level the unit to within 5mm over through it’s length and width after absorbers installed.
4).Spaces
○
1 Leave enough space above and around unit for operation and maintenance. For cleaning the copper
pipes or exchanging pipes, there should be enough space reserved( for single compressor unit, it should
be at least 3.5m, for dual compressor unit, it should be 5m), and the other end of the unit should have at
least 2.0m space, use the hole on door or other holes with appropriate position; there should have the
space of 0.7m in front of the unit (the side faces to the electric cabinet ) for operation; the space in front
and back of the unit should not less than 0.6m .
○
2 Do not install the unit at the place exposed to sunlight or other heat sources.
○
3 Near the power supply where it is convenient for wiring.
○
4 The floor is solid enough and the location should not easily bring about resonance or noise.
○
5 Put the unit indoors which should be well-ventilated with low humidity and little dust.
2.
Water pipeline system installation
1) Water quality control
When industrial water is used as chilled water, little furring may occur; however, well water or river
water, used as chilled water, may cause much sediment, such as furring, sand, and so on. Therefore,
well water or river water must be filtered and softened in softening water equipment before flowing
into chilled water system. If sand and clay settle in the evaporator, circulation of chilled water may be
blocked, and thus leading to freezing accidents; if hardness of chilled water is too high, furring may
occur easily, and the devices may be corroded. Therefore, the quality of chilled water should be
analyzed before being used, such as PH value, conductivity, concentration of chloride ion,
concentration of sulfide ion, and so on.
※
Applicable standard of water quality for the unit
PH
value
Total
hardness
Conductivit
y
Sulfid
e ion
Chlorid
e ion
Ammoni
a ion
Sulfate
ion
Silicon
Iron
content
Sodium ion
Calcium
ion
7
～
8.5
<50ppm
<20μV/cm(
25
℃
)
No
<50pp
m
No
<50pp
m
<30pp
m
<0.3pp
m
No
requiremen
t
<50ppm
2). Performance adjustment factors
