46
SSA-SVX06H-EN
Annually (Cooling Season)
The following maintenance procedures must be
performed at the beginning of each cooling season to
ensure efficient unit operation:
☐ Perform all of the monthly maintenance
inspections.
☐ With the unit operating, check unit superheat and
record the reading in the “Maintenance Log,” p. 47
☐ Remove any accumulation of dust and/or dirt from
the unit casing.
☐ Remove corrosion from any surface and repaint.
Check the gasket around the control panel door to
ensure it fits correctly and is in good condition to
prevent water leakage.
☐ Inspect the evaporator fan belt. If it is worn or
frayed, replace it.
☐ Inspect the control panel wiring to ensure that all
connections are tight and that the insulation is
intact.
☐ Check refrigerant piping and fittings for leaks.
☐ Inspect the evaporator coils for dirt and debris. If
the coils appear dirty, clean them.
Coil Cleaning
Regular coil maintenance, including annual cleaning-
enhances the unit's operating efficiency by minimizing:
• compressor head pressure and amperage draw
• water carryover
• fan brake horsepower
• static pressure losses
At least once each year — or more often if the unit is
located in a “dirty” environment — clean the coil using
the instructions outlined below. Be sure to follow these
instructions as closely as possible to avoid damaging
the coils.
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