Fujitsu ASU-RLF Installation instructions

Fujitsu ASU-RLF Coil Cleaning
Disassembly Instructions
ALWAYS SHUT FF P WER BEF RE ANY W RK
IS PERF RMED

Remove the front
cover and the air
filters. Next remove
the 2 screws on the
right and 1 screw on
the left, see arrows.

After removing all the screws, take a flat head screwdriver and locate where the top of
the cover clips in. Gently pry the top of the cover off at the locations shown. The p ll the
the cover clips in. Gently pry the top of the cover off at the locations shown. The p ll the
cover off, top first.

Once the cover is off
remove the room and
pipe thermistors off the
top right of the nit.
Remove the 3
screws for the
electrical section.
Pipe thermistor
Room
Temperature
thermistor
This is how it sho ld
look once yo remove
the control box.
Ground screws
thermistor
Ground screw

Next yo need to
separate the coil
from the blower
wheel and drain
pan. Remove the
2 screws on the
right and 2 screws
on the left.
Remove the fan
motor cover
screw.
Disconnect the
field wires from
the terminal
block and make
s re they are not
attached to the
nit anywhere.
LEFT SIDE RIGHT SIDE

Once all screws have been removed, the fan section sho ld be able to drop o t of the nit.
Once all screws have been removed, the fan section sho ld be able to drop o t of the nit.
Unclip the bottom of the nit from the wall bracket. Disconnect the drain line from the back
of the nit. The drain pan, blower wheel, and fan motor sho ld drop o t of the nit now.

Fix a plastic sheet aro nd the
evaporator eno gh to protect the
wall, floor, and a reasonable area
aro nd the evaporator.
Use a non-acidic HVAC coil cleaner.
Follow the instr ction on the cleaning
sol tion on how to apply and rinse the
cleaner.
Cleaning the Evaporator Coils.

Cleaning the Drain Pan
Remove the blower wheel from the from the
drain pan and remove the blower motor.
Example: Simple Green
Use a ready to se non-acid cleaner,
make s re to follow the instr ctions on
the cleaning sol tion.
Make s re to dry the drain pan
before re-installing.

Cleaning the Blower Wheel
After cleaning the blower wheel, be s re
to l bricate the fan holder with a
silicone grease.
Be s re to clean the blower wheel with
warm water and allow the blower wheel
time to dry before placing the wheel in
the system.
Insert
silicone
grease
here.

MOLD- A f ng s that prod ces growth on n mero s types of damp or decaying organic
matter.
MOLD- Grows where it is cool and dark and where the area contin es to stay wet.
MOLD- Spores that can be carried thro gh the air with d st and other partic lates.
MOLD- Cannot grow on s bstances, s ch as clean metal and clean plastic.
HOW TO AVOID MOLD AND MILDEW GROWTH
INSPECT AND CLEAN ALL FILTERS PERI DICALLY.
INSPECT AND CLEAN ALL C ILS PERI DICALLY.
PR PERLY SEAL ALL PENETRATI N H LES.
PR PERLY WRAP ALL PIPES THAT C NDENSATE.
Basic maintenance procedures will be found
-
IN ALL PERATI N
MANUALS
.
Basic maintenance procedures will be found
-
IN ALL PERATI N
MANUALS
.
WARRANTY- Does not cover Mold and Mildew growth.
F jits General America Inc.
353 Ro te 46 West, Fairfield NJ 07004
Phone: [phone] Fax: [phone]
Email: ServiceHVAC@f jits general.com
Ca se of Mold Mold growth on the evaporator is ca sed by improper cleaning of the
filters and coil.