P/N 0515957_M
5-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
DDSS Open Vertical Merchandisers
REPLACING FAN MOTORS AND
BLADES
Should it ever be necessary to service or
replace the fan motors or blades be certain that
the fan blades are reinstalled correctly.
t
he
blAdes
must
be
instAlled
with
rAised
embossing
(
pArt
number
on
plAstic
blAdes
)
positioned
As
indicAted
on
the
pArts
list
.
For access to these fans:
1. Remove product and place in a refrigerated
area. Turn off power to the merchandiser.
2. Remove bottom display pans.
3.
Disconnect fan from wiring harness.
4. Remove fan blade.
5. Lift fan plenum and remove screws hold-
ing bottom of motor to fan basket.
6. Replace fan motor and blade.
7. Lower fan plenum.
8. Reconnect fan to wiring harness.
9. Turn on power.
10. Verify that motor is working and blade is
turning in the correct direction.
11. Close 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.
Use silicone sealant to close other gaps.
12. Reinstall display pans. Bring merchandiser
to operating temperature before restocking.
SERVICE
— LOCK OUT / TAG OUT —
To avoid serious injury or death from electri-
cal shock, always disconnect the electrical
power at the main disconnect when servicing
or replacing any electrical component. This
includes, but is not limited to, such items as
doors, lights, fans, heaters, and thermostats.
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.
Screws
Bracket
Plenum
Motor
Speed-Nut
Fan Assembly
Fan Blade
Airflow
Direction
Note: Plenum length
and number of fans
will vary with model.
