MAINTENANCE
Maintenance to the unit is accomplished by removing the front access panels. Typically,
the panels are secured by heavy duty Philips (star or cross shape) head screws. When
removing the access panel, loosen but do not remove the screws. Carefully store the panel
in a place where it will not get damaged. Use caution as some access panels are heavy.
CAUTION: Disconnect
power at the remote circuit breaker before servicing the
unit.
The unit comes fitted with a “fan kill switch” that de-energizes the supply air fan(s) when the
filter access panel is removed / opened. This will only disconnect the power to the supply
air fans. Be sure to disconnect ALL power by turning the remote circuit breaker to the off
position.
To access the condenser section, you must remove a secondary panel located directly
behind the return air access panel.
Interior and exterior environmental conditions will influence the required frequency of coil
cleaning and filter change operations . The following is a typical maintenance schedule for
a classroom unit ventilator.
Initial
Start-Up
– Change out construction filters.
– Verify that air paths are free of construction debris and that fans turn
freely
– Verify compressor rotation
– Verify outdoor air minimum position
Every
3 months
– Change filters
Every
12 months
– Clean condenser coil (at the beginning of the cooling season)
– Vacuum out evaporator drain pan
– Vacuum any loose debris from unit’s interior condenser section
– Clean strainer in the hydronic circuit (if applicable)
Every
24 months
– Clean evaporator coil
– Vacuum any loose debris from unit’s interior return air section
– Inspect dampers to ensure that there is a proper seal when closed
-10-
Servicing The Unit
Maintenance Schedule
