CLCH-SVX03C-EN
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Routine Maintenance
5. Place the mixed solution in a garden pump-up sprayer or high-pressure sprayer. If a high
pressure sprayer is to be used:
–
Maintain minimum nozzle spray angle of 15 degrees.
–
Spray perpendicular to the coil face.
–
Keep the nozzle at least 6 inches from the coil.
–
Do not exceed 600 psi.
6. Spray the leaving air side of the coil first, then the entering air side.
7.
Thoroughly rinse both sides of the coil and the drain pan with cool, clean water.
8. Repeat steps 6 and 7 as necessary.
9. Straighten any coil fins damaged during the cleaning process.
10. Confirm the drain line is open following the cleaning process.
11. Allow the unit to dry thoroughly before putting it back into service.
12. Replace all panels and parts and restore electrical power to the unit.
13. Be careful any contaminated material does not contact other areas of the unit or building.
Properly dispose of all contaminated materials and cleaning solution.
Coil Winterization
NOTICE:
Coil Freeze-up!
Properly drain and vent coils when not in use. Trane recommends glycol protection in all
possible freezing applications. Use a glycol approved for use with commercial cooling and
heating systems and copper tube coils. Failure to do so may result in equipment damage.
Water coil winterization procedures consist primarily of draining water from the coil before the
heating season. Trane recommends flushing the coil with glycol if coils will be exposed to
temperatures below 35 degrees.
Install field-fitted drains and vents to permit winterization of coils not in use and to assist in
evacuating air from the water system during startup. If draining is questionable because of dirt or
scale deposits inside the coil, fill the coil with glycol before the heating season begins.
Individual coil types determine how to properly winterize the coil. To determine the coil type find
the “Service Model No of Coil” on the coil module nameplate. The coil type is designated by the
second and third digits on that model number. For example, if the model number begins with
“DUWB,” the coil type is UW; if the model number begins with “DW0B,” the coil type is W.
Note:
On many unit sizes, there are multiple coils in the coil module. Be sure to winterize all coils
in a given coil module.
Type UW, UU, W, P2, P4, P8, WD, 5D, and 5W Coils
Note:
Use care in removing header plugs from Type P2, P4, and P8 coils. Over-torquing may result
in twisted tubes.
1.
Remove the vent and drain plugs.
2. Blow the coil out as completely as possible with compressed air.
3. Fill and drain the coil several times with full strength glycol so that it mixes thoroughly with the
water retained in the coil.
4. Drain the coil out as completely as possible.
5. To ensure no water remains in the coil, do not replace the vent and drain plugs until the coils
are put back into service.