background image

 

 

3.  Loading Ice: After merchandiser is operating at required temperature, load with packaged ice. Stacked 
packaged ice should not exceed heights that will cause poor refrigeration efficiency.  Approximately 6" 
needs to be clear from top of stacked ice to top of inside interior for effective refrigerated ice storage. Auto-
Defrost units require good fan air flow for effective circulation. 

DO NOT

 block evaporator assembly 

fan/grill openings and air channels require unrestricted air flow convection around packaged ice. Cold Wall 
units should have ice stacked to allow air access to thermostat sensor located at upper rear interior. 
 
 
 
 

 

 

 

CAUTION: Disconnect power plug before maintenance on electrical components to avoid 

risk of electrical shock 
 
 

1.

 

Refrigeration: Clean refrigeration cover grill openings, condenser fins, and condenser fan 
blades every three (3) months or more often if refrigeration is exposed to dusty environment. 
A dirty condensing unit can cause merchandiser to become less efficient, and may lead to 
compressor failure. 

 

Note: DO NOT place any type of filter media for dust/dirt collection in front of condenser coil. 
Testing has shown filter media alone creates restricted air flow 

 
2.

 

Defrosting:  Frost forms on the evaporator when door is opened and warm air enters 
merchandiser. 

 

A.

 

Auto-Defrost (AD) Evaporator: Auto-Defrost merchandisers utilize a unit cooler evaporator 
with an electric defrost heating element to melt the frost off the evaporator coil.  The defrost 
cycle is controlled by a defrost timer which energizes a defrost heating element every four 
(4) hours for 14 to 16 minutes. 

 

Before each reloading of packaged ice: Inspect operation of unit cooler fan motor(s). Replace 
motor(s) not operating or merchandiser refrigeration will not work effectively. Inspect unit 
cooler drain hose to be sure it is not kinked or plugged. Water must drain to condensate 
evaporator for designed operation. (See condensate evaporation maintenance)  

 

B.

 

Cold Wall (CW) Evaporator: Cold Wall merchandisers utilize the merchandiser's interior 
wall surface as the refrigeration evaporator. Therefore, frost accumulation will occur on all 
wall surfaces. The merchandiser can be defrosted using a wooden paddle, plastic scraper, or 
hot air. 

DO NOT

 use a sharp instrument to "chop" the frost as you may penetrate wall and 

refrigerant tubing and do irreparable damage. A drain plug is located under the ice pallet to 
help allow water to drain.

 

 
C.

 

Condensate Evaporator: Inspect operation and condition of evaporator every three (3) 
months. The heating rod should be heating and examined for excessive corrosion. Failure of 
the heating rod to heat properly can result in the drain pan water overflowing. Also, 
accumulative dust buildup may limit proper operation of the unit.

 

All manuals and user guides at all-guides.com

Summary of Contents for IM-38

Page 1: ...INSTALLATION OPERATIONS MANUAL MASTER BILT Products 908 Highway 15 North New Albany MS 38652 Phone 800 6848988 REV 2 29 12 By LN All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...VII AUTO DEFROST WIRING DIAGRAM 10 VIII AUTO DEFROST TROUBLE SHOOTING FLOWCHART 11 IX REPLACEMENT PARTS 12 13 X WARRANTY 14 Read CAUTION highlighted statements and merchandiser labels NOTE Electrical...

Page 3: ...ay result in compressor failure Outdoor merchandisers Locations shaded from sunlight are recommended for more economical operation Auto defrost models Leave sufficient space behind merchandiser to pre...

Page 4: ...orator fans will start on Auto Defrost models The condensing unit will continue to run until air temperature in cabinet is approximately 18 F If merchandiser has a condensate evaporator plug evaporato...

Page 5: ...Defrost AD Evaporator Auto Defrost merchandisers utilize a unit cooler evaporator with an electric defrost heating element to melt the frost off the evaporator coil The defrost cycle is controlled by...

Page 6: ...examined for tears or any other problems that would cause loss of seal Replace torn worn gaskets to maintain correct temperature and refrigeration efficiency B Hinges exposed to harsh environmental c...

Page 7: ...e strong detergents abrasive cleansers solvents wax or polish as they are likely to leave objectionable odors which may be absorbed by the ice Wash the outside surfaces with a mild soap and warm water...

Page 8: ...8 All manuals and user guides at all guides com...

Page 9: ...9 All manuals and user guides at all guides com...

Page 10: ...10 All manuals and user guides at all guides com...

Page 11: ...11 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 12: ...e with cover for 27 x 27 solid door 1911019 17 Door Stucco Stainless Steel 5590030 27 x 46 with gasket 18 Door Gasket for 1030014 27 x 46 solid door 19 Glass Door 28 x 47 Silver Frame 1412012 Glass Do...

Page 13: ...13 All manuals and user guides at all guides com...

Page 14: ...LABOR REIMBURSED WILL BE BASED ON STRAIGHT TIME RATE AND REASONABLE TIME FOR THE REPAIR OF THE DEFECT 4 3 7 22 49 3 8 53 6 5 4 2 7 22 4 3 802 33 2 0 5 4 0 7 22 4 3 2 4 49 4 33 2 0 24 5 2 0520 3 N NO E...

Reviews: