Hussmann Low Temperature Self Contained Glass Door Merchandiser VRL2B

To maintain peak operating efficiency, the coil should be cleaned at least once each month. A dirty coil slows product cooling significantly and increases energy consumption by as much as 20%. Dirt buildup on coils can also cause the compressor to lock up damaging the condenser unit.

All VRL models have the same access panel design for commonality between merchandisers.

Loosen screws at each side of the front bottom grille, then lift up and pull off the grille.

Detach the merchandiser’s electrical wire harness.

Unscrew the stop bracket that holds the condensing unit to the rail base.

Grab the condensing unit from condensing unit handle. Use only the unit handle to pull out the refrigeration system. Pulling on refrigeration lines or other parts will cause damage to the refrigeration unit.

Use a soft hand brush attachment on a vacuum to remove accumulated dust and debris.

Consult an authorized service technician if more extensive cleaning is needed. If the refrigeration unit is damaged, it can be replaced with a new unit.

Sign off on the condenser coils cleaning

As part of an ongoing maintenance program for Innovator Doors, Hussmann recommends that the items below be checked annually.

b) Gasket performance (check for tearing and proper sealing)

c) Check the top hinge pin to ensure the pin is properly seated and not bent

d) Check the bottom hinge plate for excessive wear (worn cam teeth)

e) Proper operation of hold open brackets

1. Check the doors for proper closing torque:

Test 1: Open door 90 degrees and close it manually. Make sure the door opens and closes without binding.

Test 2: Open door 90 degrees and release it. The door should close on its own.

Record any complaints or issues the store manager has with the unit

Check unit for any damage, vibrations or abnormal noise

Verify unit is level side to side and front to rear

Confirm refrigerant lines are properly secured and not touching or rubbing other lines, wires or framework

Verify fan motors and motor mounts are tight

Confirm fan blades are tight and not rubbing or hitting

Make sure all electrical connections, factory and field, are tight

Verify electrical connections at lamps are secure and dry

Check for and replace any frayed or chaffed wiring

Clean evaporator coil/s and fan blade/s. Do not use an acid base cleaner. Rinse off any cleaner residue.

Clean discharge air honeycombs or grilles. Do not use an acid base cleaner. Rinse off any cleaner residue.

Clean condenser coil/s and fan blade/s. Do not use an acid base Cleaner. Rinse off any cleaner residue.

Clean condensate drain pan and drain line.

Verify condensate drain lines are clear and functioning.

Record voltage reading at unit with unit off.

Record voltage reading with unit running.

Record defrost heater voltage and amp draw.

Warning: This procedure requires trained personnel with PPE!

Defrost heaters are firmly embedded in the evaporator

Defective heater removed from the slots in the evaporator

Replacement heater is firmly seated in the slots

Spring retaining clips replaced

Drain stub correctly inserted in the cabinet drain tube

Fan plenum removed to access the evaporator coil compartment

Yellow screws removed from around the fan plenum

Other screws in the drain cover removed