Hussmann usl-2 Istruzione Sull'Installazione
Page 5
5. Clean the cabinet with a mild detergent.
This will insure good sanitation, and mini-
mize maintenance. Never use an abrasive
as this could mar the finish.
mize maintenance. Never use an abrasive
as this could mar the finish.
OPERATION and MAINTENANCE
POWER SWITCHES –
The power switch is located at the
electrical box which is behind the top decora-
tive panel. The switch will shut off all power.
TEMPERATURE CONTROL –
tive panel. The switch will shut off all power.
TEMPERATURE CONTROL –
The temperature control is located in
the electrical box on the top of the case. The
temperature control does not have an ‘OFF’
position. Adjustments may be made by the use
of a screwdriver in the slot provided in the
face of the control. Turning it clockwise will
give warmer temperatures while counter-
clockwise will give colder temperatures. There
is also an adjustable temperature differential
( the difference between the cut-in temperature
and the cut-out temperature) located next to
the dial face.
temperature control does not have an ‘OFF’
position. Adjustments may be made by the use
of a screwdriver in the slot provided in the
face of the control. Turning it clockwise will
give warmer temperatures while counter-
clockwise will give colder temperatures. There
is also an adjustable temperature differential
( the difference between the cut-in temperature
and the cut-out temperature) located next to
the dial face.
The control has a range of –30ºF to
+50ºF with a differential of 5º to 20º. It is fac-
tory set for approximately –15ºF with an 8º
differential. The temperature should be
checked with a thermometer other than the
case thermometer after it is running to insure
that the case is running at the proper
temperature for the product.
THERMOMETER –
tory set for approximately –15ºF with an 8º
differential. The temperature should be
checked with a thermometer other than the
case thermometer after it is running to insure
that the case is running at the proper
temperature for the product.
THERMOMETER –
The thermometer is located in the
center of the top header. The thermometer
will probably need resetting to reflect the
proper case temperature. Using a separate
will probably need resetting to reflect the
proper case temperature. Using a separate
thermometer located on a shelf in the case,
compare this temperature to that on the case
thermometer. If the case thermometer needs to
be adjusted, remove the clear protective cover
by popping it off with a small screwdriver and
turning the small adjustment screw on the face
of the thermometer.
compare this temperature to that on the case
thermometer. If the case thermometer needs to
be adjusted, remove the clear protective cover
by popping it off with a small screwdriver and
turning the small adjustment screw on the face
of the thermometer.
The thermometer is used to indicate
proper operating temperatures. For the USL
the proper operating temperature is –10ºF
to –15ºF.
the proper operating temperature is –10ºF
to –15ºF.
The thermometer will also warm up
rather rapidly when the case door is held open
for a time such as when the case is being re-
stocked or a shopper is making a decision on a
product. After the door is closed it will take
some time for the thermometer to pull back
down to the case temperature.
for a time such as when the case is being re-
stocked or a shopper is making a decision on a
product. After the door is closed it will take
some time for the thermometer to pull back
down to the case temperature.
The thermometer can be replaced by re-
moving the three screws securing it to the cabi-
net. Open the doors and remove the evaporator
drain pan be removing the screws along the
edges. Remove the evaporator fan grill. The
thermometer sensing element is secured to the
evaporator fan plenum.
net. Open the doors and remove the evaporator
drain pan be removing the screws along the
edges. Remove the evaporator fan grill. The
thermometer sensing element is secured to the
evaporator fan plenum.
Loosen the screw securing the element.
Remove the element and thermometer. Insert
new element and retighten screw. Finish as-
sembly in reverse order. Be sure to run the
sensing element of the new thermometer
through the hole I the cabinet face prior to se-
curing it to the evaporator fan plenum.
ELECTRICAL ENCLOSURE –
new element and retighten screw. Finish as-
sembly in reverse order. Be sure to run the
sensing element of the new thermometer
through the hole I the cabinet face prior to se-
curing it to the evaporator fan plenum.
ELECTRICAL ENCLOSURE –
The electrical enclosure contains the de-
frost time clock and terminal