U-Line 3018RGL User Manual page 51

USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
Relay Toggle
Up
Down
Relay toggle is used to manually switch the state of each
relay to test for proper operation. In addition to the AC
relays, DC outputs may also be toggled. Relay toggle can
also be used to force the unit into a particular state. For
example, to force a 3018 / 3045 into a cooling cycle
activate Comp, F1, and F3.
ID Description
Mull Mullion Heater (Not Used)
Cond Fan (Not Used)
Def Defrost Valve (Not Used)
LVLV Left Valve (Not Used)
RVLV Right Valve (Not Used)
Pan Pan Heater (Not Used)
Comp Compressor
F1 Evaporator Fan
F2 Evaporator Fan (Not Used)
F3 Condenser Fan
L1 Cabinet Lighting
L2 Cabinet Lighting (Not Used)
To access Relay Toggle:
1. Press to select "Relay Toggle".
2. Press .
3. Press and to scroll through each relay or DC
output.
4. Press to toggle.
5. To exit the Relay Toggle menu, press
"Return to Menu" and press
Select
RETURN TO MENU
RELAY TOGGLE
MULL OFF
COND OFF
Type
AC
AC
AC
AC
AC
AC
AC
DC
DC
DC
DC
DC
to select
to confirm.
CONVECTION COOLING
All 3000 series units are equipped with an advanced
convection cooling system. Convection cooling stabilizes
cabinet temperature, cools product faster and increases
energy efficiency.
Evaporator Fan
The evaporator fan is responsible for circulating warm air
from the refrigeration zone, past the evaporator and back
into the refrigerated zone.
The evaporator fan is factory set to have a 1 minute delay
at the beginning of a cooling cycle. This delay gives the
evaporator time to cool properly before warm air is passed
over it. The fan will continue to run for an additional 2
minutes at the end of a cooling cycle. Fan delay times can
be modified through the service menu.
Evaporator fan operation is also determined by door
switch state. If the door switch circuit opens the fan will
stop. When the door switch circuit is closed the fan will
either continue running with the cooling cycle, or if not
currently cooling, the fan will run for 1 minute to circulate
air and clear any condensation that may have appeared
on glass doors and shelves.
NOTE: If the unit is set to sabbath mode the evaporator
fan will no longer respond to the state of the door switch.
In order to operate efficiently the evaporator fan blade
and vents should be unobstructed and free of any dust
buildup.
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SERVICE
Troubleshooting - Extended 6