Replacing Electric Defrost Heaters - Hussmann INSIGHT REACH-IN Installation & Operation Manual

REPLACING ELECTRIC DEFROST HEATERS

(Low Temperature Cases)
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.
(DEFROST HEATER)
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
NOTES:
1. APPLICABLE STANDARDS / SPECIFICATIONS
bottom of the fan plenum to reduce improper air movement. Use
ASME Y14.5M-1994, DIMENSIONS AND TOLERANCES
2. KEY PRODUCT CHARACTERISTICS PER EPR-0006 & IDENTIFIED WITH SYMBOL
silicone sealant to close other gaps.
3. MATERIAL- N/A
4. REF 3132377
11. Replace display pans. Bring merchandiser to operating temperature
before restocking.
HUSSMANN CORPORATION • U.S. & CANADA 1-800-922-1919 • BRIDGETON, MO 63044-2483 • MEXICO 1-800-890-2900 • WWW.HUSSMANN.COM • PN 3181178_A
5 DOOR COIL SHOWN FOR REFERENCE
SCALE 1:5
K
Bend tabs back to place heater,
and re-bend to lock in place.
(DEFROST HEATER) B Defrost Heater
Coil excess heater loop around coil as shown.
C
Use the bottom hole location for defrost heater.
USE BOTTOM HOLE LOCATION FOR DEFROST HEATER
BEND TABS BACK TO PLACE HEATER AND REBEND THEM TO LOCK IN PLACE
6-4
COIL EXCESS HEATER LOOP AROUND COIL AS SHOWN
RIGHT VIEW
SCALE 1: 1
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES. INSTRUCTION-WIRE
ROUTING IRI 2.0 WITH
THIRD
CONTROLLER
ANGLE
PROJECTION
P/N
3162187
SHEET 4 OF 7
R
REV
C