WLCG/WLHG
High-Wall Air Handlers
• Installation, Operation and Maintenance Manual •
Comfort where it counts
34
P/N 240008111, Rev. G [06/18/10]
WARNING
Service should be performed by a
quali-
fied service agency
and an annual system
check is recommended.
Electrical shock hazard
— Before re-
moving the access panels, make sure that
all power is disconnected from the unit.
Failure to do so could result in injury or
electric shock.
Clean the filter
EMI units are designed and constructed for
reliability and long life with minimal mainte-
nance. To insure peak operating efficiency,
clean the filter as needed, following the pro-
cedure given here.
WARNING
The filter must be cleaned regularly
—
Allowing dust to collect on the filter will
result in reduction of air flow and cause the
unit to lose efficiency. This condition will
cause the unit to malfunction.
Clean the filter monthly or when it is vis-
ibly dirty.
Lift and remove the front grille (Figure 30,
1.
Page 34).
Open the two clips at the base of the filter.
2.
carefully pull the filter out. Place the filter
on a flat surface (Figure 31, Page 34).
To vacuum — Use a brush attachment
a.
and vacuum all visible dirt (Figure 32,
Page 34).
To use a garden hose — Hose off
b.
thoroughly. Then let filter dry before
replacing.
Maintenance
Remove the front access grille
Figure 30
Removing the filter
Figure 31
Close-up of filter clip
Cleaning with a vacuum
Figure 32
