Service manual

9
CABINET CLEANING PROCEDURES
WARNING!
To avoid electrical shock, disconnect main power supplies to the merchandiser before beginning
this procedure may have more than one disconnect switch.
The exterior of the cabinet should simply be wiped clean with a damp cloth daily. This will be sufficient to keep the
merchandiser looking its finest. Do not use a brush, scouring pad, or any abrasive material on the painted
surfaces!
To clean the interior of the cabinet, the condensing unit and power to the merchandiser fans, lights, and heaters should
be shut off. Disconnect all power before cleaning! All product in the cabinet should be removed and stored in an
appropriate facility. All shelving, trays, etc. should be removed and cleaned separately.
The interior (as well as the exterior) of the cabinet may be cleaned with a germicidal detergent at the manufacturer’s
recommended concentration. Do not use any ammonia-based products as this may damage the electrical
components in the cabinet. Again, do not use a brush, scouring pad, or any abrasive material on the painted
surfaces. Use a soft brush or cleaner pad for built-up dirt, stains, or spills. Remove only the necessary mechanical
parts to access the evaporator coil and fan housing. Care should be taken not to unnecessarily soak fan motors,
electrical connections, controls, or any wire raceway. Wipe all surfaces with a damp cloth. A sanitizer should then be
thoroughly sprayed onto the surfaces and again wiped with a damp cloth.
Remove only the necessary mechanical parts to access the condenser coil and compressor housing. Care should again
be taken not to unnessarily soak fan motors, electrical connections, time clock, ballasts, or any wire raceway. Check the
condenser coil to insure that it is not clogged with dirt, dust, or lint. A dirty or clogged condenser coil will result in
diminished performance of the cabinet. The condenser should be brushed with a plastic bristled brush. For dust or dirt
that has accumulated deep inside the condenser, use compressed air to blow the dirt through the coil. Do not let dust or
dirt accumulate on the fan blades. If dust or dirt is noticeable, simply wipe the fan blades with a damp cloth as with other
surfaces. After cleaning, replace any equipment that was previously removed and start the condensing unit and return
power to the lights, fans, and heaters.
CLEANING: As a regular maintenance routine, the condenser coil should be cleaned approx every 6 to 12 months,
depending on store conditions.
Keep the equipment clean and sanitary so it will meet your local sanitation codes. Wipe up all spills, clean with water
and a mild detergent, then rinse with clean water. Wipe the exterior and gasket area as needed.
Cabinet Monthly Checklist
1. Check condenser coil, clean if necessary.
2. Check service valve packing for leaks evident by oil traces.
3. Check for obstruction restricting air flow over the evaporator coil and the condenser coil.
Insure that the air intake is not obstructed.
4. Check for excessive noise
5. Check for proper temperature, adjust if necessary.
6. Check door gaskets for proper seal against cabinet (when applicable).
Check doors for self closing, adjust tension if necessary (when applicable).
Check door frame heaters and door heaters for proper operation (when applicable).
7. Check for proper operation sequence in normal refrigeration cycle and defrost cycle (when applicable).