Maintenance
11 2 WSHP-SVX01Q-EN
scale.This service should be performed by an experienced
service person.
It should be noted that the water quality should be checked
periodically. See Table 62, p. 112.
Condensate Trap
For units incorporating a negative trap design, ensure that
the condensate system is primed with water at all times.
Allowing a negative, pressure condensate system to run
dry could cause a break in the condensate seal allowing
the fan to draw water from the condensate line to spray
moisture into the mechanical system. By maintaining a
primed condensate trap, a seal will be created and will
help prevent these complications.
WARNING
Hazardous Chemicals!
Failure to follow all safety instructions below could
result in death or serious injury. Coil cleaning agents
can be either acidic or highly alkaline and can burn
severely if contact with skin occurs. Handle chemical
carefully and avoid contact with skin. ALWAYS wear
Personal Protective Equipment (PPE) including goggles
or face shield, chemical resistant gloves, boots, apron
or suit as required. For personal safety refer to the
cleaning agent manufacturer’s Materials Safety Data
Sheet and follow all recommended safe handling
practices.
Table 62. Water quality
Scaling Amount
Calcium and magnesium (total hardness) Less than 350 ppm
Corrosion
pH 7-9.5
Hydrogen Sulfide Less than 1 ppm
Sulfates Less than 25 ppm
Chlorides Less than 125 ppm
Carbon Dioxide Less than 75 ppm
Total dissolved solids (TDS) Less than 1000 ppm
Biological Growth
Iron Bacteria Low
Erosion
Suspended Solids Low
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