Trane CSRA025FAF0, Installation Operation & Maintenance

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CSRA-SVX02A-EN 79
Service & Maintenance
2. Protect all electrical devices such as motors and controllers from any
over spray.
3. Straighten any bent coil fins with a fin comb.
4. Mix the detergent with water according to the manufacturer's instructions.
If desired, heat the solution to 150°F maximum to improve its cleansing
capability.
WARNING
Hazardous Pressures!
Coils contain refrigerant under pressure. When cleaning coils, maintain
coil cleaning solution temperature under 1500F to avoid excessive
pressure in the coil. Failure to follow these safety precautions could
result in coil bursting, which could result in death or serious injury.
5. Pour the cleaning solution into the sprayer. If a high-pressure sprayer is
used:
• do not allow sprayer pressure to exceed 600 psi.
• the minimum nozzle spray angle is 15 degrees.
• maintain a minimum clearance of 6" between the sprayer nozzle and
the coil.
• spray the solution perpendicular (at 90 degrees) to the coil face.
6. Spray the leaving-airflow side of the coil first; then spray the opposite side
of the coil. Allow the cleaning solution to stand on the coil for five minutes.
7. Rinse both sides of the coil with cool, clean water.
8. Inspect both sides of the coil; if it still appears to be dirty, repeat Steps 6
and 7.
9. Reinstall all of the components and panels removed in Step 1 and any
protective covers installed in Step 2.
10.Restore the unit to it's operational status and check system operation.
System operation
[ ] Close the main power disconnect switch for the unit and all system
support equipment. Turn all system control circuit switches to the “On”
position.
WARNING
Rotating Components!
Disconnect all electric power, including remote disconnects before
servicing. Follow proper lockout/tagout procedures to ensure the power
can not be inadvertently energized. Failure to disconnect power before
servicing could result in death or serious injury.