Trane GETB manual Hazardous Voltage, Hazardous Chemicals, Preventive Maintenance

Maintenance

Preventive Maintenance

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

Filter maintenance must be performed to assure proper operation of the equipment. Filters should be inspect- ed at least every three months, and re- placed when it is evident they are dirty. Filter sizing includes:

Model GET	Filter Size (nominal)
009, 012	14 x 20 (356 x 508)
015	18 x 20 (457 x 508)
018	18 x 25 (457 x 635)
024, 036	20 x 30 (508 x 762)

!WARNING

Hazardous

Voltage!

Disconnect all electric power, in- cluding remote disconnects and discharge motor start/run capaci- tors before servicing. Follow prop- er lockout/tagout procedures to ensure the power can not be inad- vertently energized. Failure to dis- connect power before servicing could result in death or serious in- jury.

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

should be performed by an experi- enced service person.

!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

Scaling

Calcium and magne-	Less than 350
sium (total hardness)	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	Less than 1000
(TDS)	ppm
Biological Growth
Iron Bacteria	Low
Erosion
Suspended Solids	Low

WSHP-SVN08B-EN 25