hussmann GSVM User Manual
Page 6

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AIR DISTRIBUTION and PRODUCT 
 LOADING – 
 
 
This cabinet has a forced-air
circulation system. Air flows through the 
back wall over the product on the shelves, 
as well as out the honeycomb diffuser 
located above the product, across the face 
of the product (air curtain) and into the 
return air grill. 
 
 
Do not load product so that it
extends over the shelf edges or over the 
return air grille. 
 
POWER REQUIREMENTS – 
 
 
The GSVM Models are equipped
for operation on a 115/60/1 power supply. 
 
 
See chart in specifications for
requirements. 
 
 
It is very important for the safety of
both you and your customer to have each 
circuit properly grounded. A qualified 
electrician should perform all wiring in 
accordance with the National Electrical 
Code and/or all local codes. Separate 
circuits are recommended for each case in 
order to prevent product loss due to 
overloading or malfunction of other 
equipment on the same circuit. For proper 
operation of equipment, voltage as 
measured at the compressor must not vary 
more than 5% from the cabinet serial plate
rating. If either a high or low voltage 
condition exists, contact your electrician, 
local power company, or equipment 
manufacturer. 
 
 
ELECTRICAL BOX – 
 
 
The electrical box is located behind
the louvered access panel. The box is 
capable of sliding out for service after the 
hold down screw is removed. 
 
 
The box contains the power switch
and defrost time clock. 
 
POWER SWITCH – 
 
 
The main power switch is located
behind the front louvered access panel on 
the side of the electrical box. This power 
switch controls all power to the case. THE 
CABINET POWER SWITCH MUST BE 
IN THE OFF POSITION BEFORE 
STARTING ANY CLEANING OR 
SERVICE WORK ON THE 
EQUIPMENT. 
 
DEFROST TIME CLOCK – 
 
 
The time clock, located in the
electrical box, provides a definite off-time 
so that the evaporator will clear itself of 
frost. 
 
 
The clock is provided with pins to
initiate defrost. The failsafe setting sets 
the length of defrost (from 2 minutes 
minimum to 110 maximum). 
 
 
The clock is factory pre-set for 3
defrosts (at 6 a.m. , 2 p.m. and 10 p.m.) 
on the 4060 and 4072 at 20 minutes 
