Maintenance
www.DaikinApplied.com
7
IM 1272 • OPTILINE VERTICAL FAN COILS
Maintenance
WARNING
Warnings indicate potentially hazardous situations, which can result in
property damage, severe personal injury, or death if not avoided.
CAUTION
Sharp edges and coil surfaces are a potential injury hazard. Avoid contact
with them.
Always isolate the unit electrically before removing the front
access panel. Do this by opening the circuit breaker (or other
switching device) in the distribution panel in the suite. Do not
use the fan switch as the means of isolation. There is a high
risk of electrocution if the unit is improperly isolated. If in doubt
have a qualified electrician perform the service work.
Ensure that the fan has stopped rotating before proceeding to
work within the unit. If the unit is equipped with a fuse or circuit
breaker, do not change out either of these devices with ones of
a higher Amp rating. The purpose of a fuse or circuit breaker is
to protect the power wiring to the unit.
Take care when working inside the unit. Sheet metal
components may have sharp edges.
If the black acrylic coating on the glass fiber cabinet liner is
damaged, it must be patched to prevent glass fiber particles
entering the air stream.
Every 3 Months
•
Check/replace the filter
The filter can be one of two types: a 1" thick cardboard
framed type or a metal frame with filter media attached.
Units with a hinged filter door in the upper half of the grille
panel – Grasp the bottom edge of the door and sharply
pull the door forwards. Lift the door to the horizontal
position. The filter is now accessible and is removed by
sliding it upwards out of the channels attached to the coil.
Table 1: Filter Size Chart
Unit Size
03 – 04
06 – 08
10 – 12
1" Filter Size
12" × 20"
14" × 25"
16" × 25"
Annually
(before the start of the cooling season)
• Remove the return air/access panel from the wall.
Remove the two sheet metal screws which secure the
panel that shields the fan assembly. Pull the shield panel
sharply downward and remove.
• Vacuum the drain pan and check that the drain outlet is
not blocked. Pour water into the pan and check that it
drains quickly. If it appears to be partly blocked, remove
and clean the drain hose beneath the pan.
• If the coil surface is dirty, vacuum the surface which faces
the room. Take care not to damage the aluminum fins on
the coil. If the fins are flattened, the performance of the
unit will be reduced.
• Inspect the surface of the cabinet liner for evidence of
dampness. The liner should be completely dry in all
areas. Vacuum excessive dust from the liner, taking care
not to damage the black acrylic coating on the liner. Do
not run the unit if the liner is damp as this can promote
mold growth. Determine the cause of the dampness. If
there is evidence of mold growth it might be necessary
to replace part or all of the liner. If in doubt consult a
remediation specialist.
• Fan, fan motor, control valve(s), electric heater, drain pan
over-flow switch, and thermostat do not require routine
maintenance.
NOTE:
Fan motor has sealed bearings and does not require
additional lubrication.
