Regular Maintenance Items; Air Filters; Fuses - Data Aire gForce Ultra User Manual

10.

REGULAR MAINTENANCE ITEMS

10.1 Air Filters

The air filter section is an integral part of the environmental control system, designed
within the unit for easy front accessibility. An initial set of filters are factory installed in
the unit. The filters are 4-inch (100mm) deep, disposable, pleated design, extended-
surface, nonwoven, reinforced cotton fabric; supported and bonded to welded-wire
grid; enclosed in cardboard frame design rated not less than MERV 8 per ASHRAE Std.
52.2. A filter differential switch for alarm activation is included.
Air filters should be checked on a regular basis and changed when they become dirty.
This will ensure efficient operation of the unit. Spare air filters should be kept in stock
as these tend to be a frequently replaced maintenance item. Air filters may require
changing as often as monthly dependent on room or space conditions.
installations with construction dust will quickly clog filters requiring new filters.
The dap4™ control panel monitors the air filters status. A dirty filter alarm will be
enunciated on the controls display screen. Although the unit may display a dirty filter
alarm, this should not be relied on as the only determinant for replacing air filters. A
misadjusted air filter differential pressure switch may not give a proper indication of a
clogged filter.
To check the air filter pressure differential pressure switch for proper adjustment,
temporarily cover approximately 75% of the return air opening using heavy cardboard
or similar material.
simulating dirty filters. If the alarm energizes prematurely or does not energize at all,
the pressure switch should be adjusted.
determining if an adjustment is necessary.
WARNING:
problems such as coil icing or poor air distribution.

10.2 Fuses

Fuses may occasionally require changing especially with installations where the voltage
is not consistent. Drops in voltage can create brief periods of high amp draw, causing
fuses to blow. Always replace fuses with those of the equivalent rating with regard to:
118 ● gForce Ultra User Manual
The alarm should energize when 75% of the air is blocked,
Air filters that require changing can restrict airflow and create
All side panels must remain closed when
New
10-2014