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:
Size | Size |
| Filter Size |
60 HZ | 50 HZ |
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| GEH |
| |
| 14 5/8" x 20 1/4" | ||
| (371 x 514) | ||
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| 16 3/8" x 23 5/8" | ||
| (416 x 600) | ||
|
|
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| 18 5/8" x 25 3/8" | ||
| (473 x 645) | ||
|
|
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| 20 5/8" x 29 3/4" | ||
| (524 x 755) | ||
|
|
| |
| 20 x 20 (3) | ||
| (508 x 508) | ||
|
|
| |
| 25 x 25 (3) | ||
| (635 x 635) | ||
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| |
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| GEV |
| |
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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- 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-
WARNING
Table 11: Water Quality Table
Scaling |
| |
Calcium and magnesium | Less than 350 ppm | |
(total hardness) | ||
| ||
Corrosion |
| |
pH | ||
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 ppm | |
(TDS) | ||
| ||
Biological Growth |
| |
Iron Bacteria | Low | |
Erosion |
| |
Suspended Solids | Low |
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
040
GEV 072-
120
090
15 7/8" x 19 7/8"
(403 x 504)
17 7/8" x 24 7/8"
(454 x 632)
19 7/8" x 24 7/8"
(504 x 632)
27 7/8" x 29 7/8"
(708 x 759)
20 x 20 (4)
(508 x 508)
19 5/8" x 24 5/8" (6)
(498 x 625)‘
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
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
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
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 11.
8 2 |