8
Note: To unlock the doors, use the door key switch and turn
to the horizontal (unlock) position. Return key to the
vertical position to lock when loading is complete.
Maintenance
Danger! Your unit is charged with propane
refrigerant. Verify refrigerant type used as noted on the
merchandiser serial tag. R290 (Propane) is a flammable
and explosive gas. Component parts shall only be
replaced with like components no matter the refrigerant
type used. Maintenance and repair of the electrical and
refrigeration systems shall only be done by licensed,
trained, and qualified personnel. Disconnect power
before performing service; certain models may contain
multiple voltages. Leer does not assume responsibility
for any damage to people or things deriving from
violation, improper use, or noncompliance with Leer’s
instructions.
Cleaning the Merchandiser:
The merchandiser should be cleaned annually. In corrosive
environments such as coastal regions and areas where
deicing chemicals and road salts are used, more frequent
cleaning is recommended.
The exterior of the merchandiser can typically be cleaned
with the use of detergents dilluted in warm water followed
by a tap water rinse. The exterior paint is capable of
withstanding the use of polishing compounds and most
solvents. Before using stronger cleaning agents, they should
be tested on a small, inconspicuous area prior to application
onto visible surfaces of the merchandiser. If cleaning the
interior of the merchandiser, the use of detergents with
strong odors (i.e. citrus based cleaners), abrasive cleaners
containing chlorine bleach, and any form of solvent based
cleaners is not reccommended. They may leave
objectionable odors inside the cabinet which may be
absorbed by the ice being stored in the merchandiser.
Cleaning Door Gaskets:
Door gaskets may mildew and stiffen over time. The gasket
is made of a soft, flexible rubber-like material that can be
cleaned using most kitchen and bath cleaners designed for
mildew removal. Review manufacturer information and
instructions on any cleaning agent prior to use to determine
the cleaner’s compatability with the surface being cleaned.
Cleaning Condenser Coils:
It is recommended to inspect and clean the condenser coil
and fan blades every 3 months.
There are a variety of methods available for cleaning
condenser coils. Keep in mind that the debris is being
drawn into the coil by the condenser fan and the debris
should be removed in the opposite direction.
• The simplest and most preferred method is to use a
vacuum cleaner to suck the debris out of the coil from
the outside surface.
• Another method is using compressed air to blow dust
from the coil. The debris should be blown out from the
inside surface of the coil.
Warning! When using compressed air, there may be a
cloud of dust released into the air surrounding the
merchandiser. It is recommended that the service person
wear proper protective equipment (i.e., safety glasses and a
dust mask) when performing coil cleanings.
Note: Keep the top of the merchandiser clear of debris and
DO NOT use any type of filter media in front of the
condenser coil to trap dust. Filter testing has been proven to
create enough restriction of air flow to reduce the efficiency
of the coil’s heat exchange.
Defrosting the Merchandiser:
A floor drain is present in most merchandiser models. For
outdoor models, the floor drain plug can be removed to
allow water drainage. If draining to the ground is not
desirable or if the merchandiser is located indoors, the water
may be removed with the use of a wet-vac and disposed of.
Note: The floor drain plug must be replaced after water is
drained out of the unit.
Auto-Defrost Methods:
It is recommended to check the operation and condition of
the evaporator coil and for signs of excessive ice buildup
every 3 months.
Auto-defrost models are equipped to be self-defrosting and
enter defrost mode once every four hours automatically.
During the defrost cycle, the power to the refrigeration
system will be automatically re-directed to the defrost
circuit. This will shut down power to the condensing unit
and evaporator fan motors. This will also send power to a
heating element that is attached to the surface of the
evaporator coil. The heat generated by the element will melt
the ice build-up on the evaporator coil and the resulting melt
water will drain through a tube out of the back wall of the
merchandiser.
Warning! The defrost termination / safety switch functions
as a possible fire protection device. Do not remove or
bypass the switch from the defrost circuit.
On outdoor cabinet models, the melt water will exit the
drain tube directly to the ground.
On indoor cabinet models, the consumer needs to install a
condensate evaporator heater assembly (described in the
“Installation” section of this manual) (sold separately) onto
the exterior back wall of the cabinet. The melt water from
the defrost cycle will drain into a catch pan where it will
then be heated to the point of evaporation. The function of
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