Lighting; Door Switches; Door And Frame Heaters; Alarm Thermostat (Heater Delay) - Hussmann HGL-1BS Installation And Service Instructions Manual

replace all of the spring retaining clips to assure
heater retention. One lead of the defective
heater may be used to pull the new leads
through the cabinet to the respective terminals
as marked on each lead.
NOTE - Care must be taken to make sure the
drain stub is correctly inserted in the cabinet
drain tube for proper drainage.
Lighting –
Electronically powered T-8 lamps lo-
cated inside each doorway provide interior
lighting. The tubes are enclosed in a patented
lens system to maintain proper heat around the
bulb for maximum light intensity and to protect
the product in case of breakage. See the An-
thony ELS instructions attached at the back of
this booklet for lens removal.
Each HGL model has a convenient ON/
OFF switch so lights may be turned off to con-
serve energy during hours when the store is
closed. The switch is located inside the cabinet
above the left-hand door. This switch only con-
trols the lights. 208-230 volt power must be
shut off at the main power supply source lo-
cated within the store prior to starting any ser-
vice or maintenance work.
Light ballast are located in mullions of the door
frames. See the Anthony ballast removal in-
structions at the back of the booklet.
Door Switches –
The switches at the top of the doorways
operate the evaporator fan motors. These
switches stop the fan motors when the doors are
open.
Door and Frame Heaters –
This cabinet is equipped with both
frame and door heaters. These are thermo-
statically controlled and will not come on until
the cabinet is at operating temperature. See
door mfg instructions for heater replace-
ment at the back of this booklet.
Alarm Thermostat (heater delay) –
The alarm (heater delay) thermostat is
located on the top of the inner liner in the up-
per right hand corner behind the evaporator.
The thermostat will not turn the heaters on
until it senses 0° and in turn will turn the
heaters off when it senses +18°F. This is so
that unwanted heat will not be added to the
case during defrost or if the case refrigeration
system fails.
Expansion Valve Adjustment –
Expansion valve must be adjusted to
fully feed the evaporator. Before attempting
to adjust the valve make sure the evaporator
is either clean or only lightly covered with
frost, and that the cabinet is within 10° of its
expected operation temperature. Adjust the
expansion valve as follows:
Attach two sensing probes to the
evaporator, one under the clamp holding the
expansion valve sensing bulb and the other
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