Maintenance
RT-SVX37B-EN 35
5. Pour the cleaning solution into the sprayer. If a high-
pressure sprayer is used:
a. do not allow sprayer pressure to exceed 600 psi.
b. the minimum nozzle spray angle is 15 degrees.
c. maintain a minimum clearance of 6" between the
sprayer nozzle and the coil.
d. 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
Step 6 and Step 7.
9. Reinstall all of the components and panels removed in
Step 1 and any protective covers installed in Step 2.
Note: For units equipped with hail guards follow
reinstallation procedure listed below.
Hail Guard Reinstallation
• To reinstall the hail guard, locate the bottom of the hail
guard in the lower bracket and secure it to the upper
unit bracket with the attached fasteners.
Note: Secure hail guard latches.
1. Restore the unit to it’s operational status and check
system operation.
Annual Maintenance
• Clean and repaint any corroded surface.
WARNING
Hazardous Pressures!
Coils contain refrigerant under pressure. When cleaning
coils, maintain coil cleaning solution temperature under
150°F 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.
Figure 31. Slide latch
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