6-2
s
ErvIcE
P/N 3053328_C
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
REPLACING ELECTRIC DEFROST
HEATERS FOR (RL-W / RLN-W / RLNI-W /
RLN-SP / RLNI-SP)
Electric defrost requires a heater on the front and
rear of the coil as shown. The heaters are held in
place by tabs in the coil brackets.
Front Defrost Heater
1. Disconnect power to the case.
2. Lift fan plenum up and back to access the heater.
3. Bend tabs holding heater to horizontal.
4. Remove heater from coil bracket.
5. Position new heater in bracket.
6. Bend tabs back to vertical to hold heater in bracket.
7. Replace the coil cover and lower fan plenum.
8. Turn on power.
9. Verify that heater is working correctly.
10. 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.
11. Replace display pans. Bring merchandiser to
operating temperature before restocking.
Rear Defrost Heater
1. Disconnect Power.
2. Remove coil cover.
3. Remove clips holding heater to coil tube.
4. Remove heater from slots in coil bracket.
5. Position new heater in slots.
6. Replace clips.
7. Replace the coil cover.
8. Turn on power.
9. Verify that heater is working correctly.
10. Replace display pans. Bring merchandiser to
operating temperature before restocking
Electric Defrost
Bend Tabs
on Each
Bracket to
Release
or Secure
Heaters
Back Heater
Front Heater