Hussmann hgl-1bs Istruzione Sull'Installazione

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Page 9 
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