Maintenance

Preventive Maintenance

Maintenance on the unit is simplified with the following preventive sugges- tions:

WARNING

Hazardous

Voltage!

Disconnect all electric power, in- cluding remote disconnects be- fore servicing. Follow proper lockout/tagout procedures to en- sure the power can not be inad- vertently energized. Failure to disconnect power before servic- ing could result in death or seri- ous injury.

Check the contactors and relays within the control panel at least once a year. It is good practice to check the tight-

WARNING

Hazardous

Chemicals!

Coil cleaning agents can be either acidic or highly alkaline. Handle chemical carefully. Proper han- dling should include goggles or face shield, chemical resistant gloves, boots, apron or suit as re- quired. For personal safety, refer to the cleaning agent manufactur- ers Materials Safety Data Sheet and follow all recommended safe handling practices. Failure to fol- low all safety instructions could result in death or serious injury.

It should be noted that the water qual- ity should be checked periodically. See Table 9.

Table 9: Water Quality Table

ness of the various wiring connections within the control panel.

A strainer (60 mesh or greater) must be used on an open loop system to keep debris from entering the unit heat exchanger and to ensure a clean sys- tem.

For units on well water, it is important to check the cleanliness of the water- to-refrigerant heat exchanger. Should it become contaminated with dirt and scaling as a result of bad water, the heat exchanger will have to be back flushed and cleaned with a chemical that will remove the scale. This service

Scaling

Calcium and magnesium (total hardness)

Corrosion

pH

Hydrogen Sulfide

Sulfates

Chlorides

Carbon Dioxide

Total dissolved solids (TDS)

Biological Growth

Iron Bacteria

Erosion

Less than 350 ppm

7-9.5

Less than 1 ppm Less than 25 ppm Less than 125 ppm Less than 75 ppm

Less than 1000 ppm

Low

should be performed by an experi- enced service person.

Suspended Solids

Low

WSHP-SVX02A-EN

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Trane WPWD, EXWA, GSWD manual Hazardous Chemicals, Preventive Maintenance

GSWD, WPWD, EXWA specifications

Trane is a leading provider of heating, ventilation, and air conditioning (HVAC) systems, and their GSWD, WPWD, and EXWA series are some of the most innovative and efficient products available in the market. These product lines are designed to meet diverse HVAC needs by offering distinctive features, cutting-edge technologies, and remarkable performance characteristics.

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