Replace Cooling Unit; Apply Mastic; Fig. 18 - Cross Section Step Of Cooling Unit Opening; Fig. 19 - Mastic Bead Path - Norcold 2118 Manual

Disassemble, cont'd.
Caution!
Condenser fi ns may be sharp. Use care or wear
!
cut resistant gloves.
1. Remove screws (2x) ( Fig.17,A) holding condenser to upper rear of
refrigerator.
2. Remove screw (Fig.17,F) from the bracket holding condenser tube
to the upper rear of refrigerator.
3. Remove screws (2x) (Fig.17,C) from the horizontal bar holding
the foam plate into the middle rear of refrigerator. Set aside. To
aid re-assembly, mark location of these screw holes on edge of
refrigerator.
4. Remove screw (Fig.17,D) from "Z" shaped metal bracket holding
the absorber to the lower rear of refrigerator.
Caution!
To avoid damage, DO NOT peel aluminum tape
!
away. Peeling damages outer skin of refrigerator and weakens
the new seal formed during reassembly. A decrease in cooling
ability will result.
5. Cut aluminum HVAC tape (Fig.17,B) that seals foam plate to back
of refrigerator. Cut around entire perimeter of foam plate, at the
indentation in the tape.
Caution!
! As you remove the cooling unit, carefully slide
the fans and fan wires out from under the cooling unit.
6. Lift and remove cooling unit.
7. Grasp the absorber coils (Fig.17,E) on each side and pull up; let
the drain hose slip through opening in foamed plate.
8. Set cooling unit aside; the unit must be packaged and returned to
Norcold.
Disassembly complete.

Replace Cooling Unit

3 3
Caution!
The refrigerator serial number determines the style of the
!
replacement part. BE SURE you have the correct service part. Refer to
"Verify Service Part" in this document for additional information.
Note:
IT IS IMPORTANT THAT ALL EXISTING (OLD)
MASTIC IS REMOVED. A fl exible, round cornered scraper is
needed to remove old mastic.
Note:
DO NOT REMOVE OLD TAPE. Removing old tape
will damage skin of refrigerator and weaken new seal.
1. Remove old mastic:
■ If no dented, malformed, wet, or spongy areas exist in
foamed surfaces, use a fl exible, round cornered scraper to
remove all mastic from lip (or step) of opening that receives
foam plate.
■ Discolored areas in old mastic, indicate regions where air
leaked into refrigerator and reduced cooling. If present,
photograph these areas and Contact Thetford Technical
Support at 1-800-444-7210 before continuing.
■ Scrape old mastic from evaporator tube paths on freezer
evaporator plates and from fresh food fi n panel.
■ Be SURE to remove all excess mastic from the evaporator
tube on the new cooling unit.
www.norcold.com

Apply Mastic

3.1 3.1
Fig. 18 - Cross Section Step of Cooling Unit
Opening
A. Mastic tube nozzle
B. Mastic bead
C. Back surface of refrigerator
Caution!
Use only Norcold-approved thermal mastic
!
sealant to avoid equipment malfunction. Other sealants, such
as silicone, latex, or petroleum-based formulations will reduce
cooling effi ciency.
Caution!
Poor cooling performance can occur if the mastic
!
applied varies (more or less) from amount specifi ed.
B
A

Fig. 19 - Mastic Bead Path

A. Evaporator plates
B. Lip (step) mastic
C. Evaporator tube mastic locations
Caution!
Use only Norcold-approved thermal mastic
!
sealant to avoid equipment malfunction. Other sealants, such
as silicone, latex, or petroleum-based formulations will reduce
cooling effi ciency.
9
B
A C
C