Service; Replacing Fan Motors And Blades - Hussmann RL2W Installation & Operation Manual

P/N 3053328_C
Before Beginning Any Service or Repair:
Use a hand-held propane leak detector ("sniffer") to
ensure no propane is present in the immediate area,
the inside of the display case and the inside of the
refrigeration system. R-290 is an odorless refrigerant.
Keep the area clear of all customers and non-essential or
unauthorized personnel.
Verify that all repair parts are identical models to
the ones they are replacing. Do not substitute parts
such as motors, switches, relays, heaters, compressors,
power supplies or solenoids. Failure to do so can result
in an explosion, death, injury and property damage.
Parts used on hydrocarbon cases must meet specific
UL certification for non-incendive or non-sparking
components. Use only Hussmann approved parts
approved through the Hussmann Performance Parts
Website. https://parts.hussmann.com/
Brazing must not begin before all propane has been
cleared from the immediate area — the inside of the
displays case and the inside of the refrigeration system.
REPLACING FAN MOTORS AND
BLADES
See cross section for location of evaporator fans.
Should it ever be necessary to service or replace the
fan motors or blades be certain that the fan blades
are re-installed correctly.
Fan Access
1. Disconnect power to the case.
2. Remove bottom display pans.
3. Remove plug clip and disconnect fan from wiring
harness.
4. Remove fan blade.
5. Remove screws holding fan motor/bracket assembly
to plenum and remove assembly.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

SERVICE

6. Replace fan motor/bracket assembly and reinstall
screws.
7. Reinstall fan blade.
8. Reconnect fan to wiring harness, and replace plug
clip.
9. Turn on power.
10. Verify that motor is working and blade is turning
in the correct direction.
11. Close large air gaps under fan plenum. Warmer
air moving into refrigerated air reduces effective
cooling. If the plenum does not rest against the
case bottom without gaps, apply foam tape to the
bottom of the fan plenum to reduce improper air
movement, however defrost water should not be
blocked by fan plenum. Do NOT seal fan plenum
so that water can not drain.
12. Replace display pans. Bring merchandiser to
operating temperature before restocking.
Screws
Screws
Bracket
Bracket
Hussmann recommends against frame heater
cycling with Innovator doors to prevent door
seals from freezing to the frames and tearing.
Fan Assembly
Fan Assembly
S er vi c e # M O . X X X X X X X
XX XXXXX
Plenum
Plenum
6-1
Speed-Nut Speed-Nut
Fan Blade
Fan Blade
Airflow
Airflow
Direction
Direction
Motor Motor
Reach-In