4000 Series
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16
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3460006-17_serial series 5000000
Control Description
Basic Operation:
After unit setup, turn the power switch to the ON position (Figure 6.1). The green power switch
will light, and the Watlow controller will light showing interior chamber temperature (top red display) and
current operating status (bottom red display). Please refer to Figure 6.2 for more details on the Watlow
Display.
User Selectable Profiles:
The unit is factory configured for 3 independent programmable temperature profiles, selectable
from the Mode Selection Switch. Pressing the cycle start button while the unit is in standby mode (OFF
displayed in the bottom green Watlow display area) will start the temperature profile that the Mode
Selection Switch is set to.
Profile Running Indicator
Chamber Temperature C
(Alarm and Error Codes
will display when over-
temperature alarms are
triggered)
Communications Indicator flashes
when connected to a pc using the
Watlow Configurator® software
Unit Operating Status
off: Unit is in standby
state or Control
Temperature Setpoint
EZ1 Key to initiate Defrost
Cycle when evaporator
temperature is below 15C
Output Indicators
1.
Refrigeration Modulation, lit when full refrigeration is
requested otherwise may pulse on and off.
2.
Heater modulation, lit or pulsing indicating heaters
are activating.
3.
Evaporator over-temperature control, lit normally, off
in over temp condition set at 65 degree C. Returns to
normal when cabinet lowers to 60C and alarm is
manually cleared.
4.
Control probe over-temperature control, lit normally,
and off in over temp condition. Set at 45 degree C.
Returns to normal when cabinet lowers to 43C and
alarm is manually cleared.
6. Evaporator coil temperature
indicator
ON – Evaporator is above 15C
OFF – Evaporator is below 15C
Infinity Key
Up Arrow for Increasing Profile
Parameters
Advance Key
Figure 6.2
Down Arrow for Decreasing
Profile Parameters
