Temspec Unit Ventilator IOM 2023-07-05
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MAINTENANCE
Servicing the Unit
Access to the components is gained through front access panels. Typically, the panels are fastened
by heavy duty Phillips head screws. If the units have hinged doors, loosen but do not remove the
screws, and swing the door open. If the unit has removable panels, loosen but do not remove the
screws, and carefully store the panel in a place where it will not get damaged. The horizontal style
units utilize hinged access side panels with locking side supports to hold the panel open.
CAUTION: Disconnect power before servicing the unit.
The access panels have a door switch installed that will shut the supply air fan off once the panel is
removed. This will only disconnect the power to the supply air fans. Be sure to disconnect ALL power
by turning the remote disconnect switch to the off position.
Drain Pan Instruction
• Please check the drain pan for proper drainage as part of commissioning.
• Drain pan should be slopped towards the drain connection
• Check to make sure the drain pain overflow switch didn’t come loose or shift during shipping
as part of commissioning.
• The unit should be checked to ensure the drain pan is level, free of debris, and the drain line
properly connected to the drain pan stub-out.
Maintenance Schedule
Frequency maintenance greatly depends on the surrounding conditions (inside and outside of the
building). The following is a typical maintenance schedule for a classroom unit ventilator.
Every 3 months – Change filters
Every 6 months – Visually inspect the condition of the ERV desiccant wheel, clean if necessary
Every 12 months – Vacuum out drain pans
– Clean strainer in hydronic circuit (if applicable)
Every 24 months – Clean evaporator coil
– Vacuum any loose debris from interior of the unit
– Inspect dampers to ensure that there is a proper seal when closed
Changing the Filters
The outdoor and indoor conditions will determine the frequency of filter changes. Temspec
recommends that the filters be changed every 3 months as a rule-of-thumb. Note that dirty filters will
affect the overall performance of the unit.
To change the filters, open / remove the filter access panel, remove the filters, and replace with the
new ones.
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