Nor-Lake SCIENTIFIC WARMING CABINET - Manual (Page 3)

3 2/11 Rev. A 143378
Remote Alarms Contacts Access - The factory installed Remote alarm contacts access is located
on the top of the cabinet under top cover, behind the microprocessor control.
1. Remove the cover to access the terminal connections.
2. Select and knock-out a hole to run field leads into electrical box terminals.
3. The terminal block in the electrical box is labeled for “normally open” and “normally closed”
activation. End user is responsible for proper field installation.
Terminal connections are rated for class II circuits only per NEC table 11(A). (Limited power
source less than 30vac 8 Amp. max, see applicable notes in NEC).
2-10 volt DC Output – Terminal board for 2-10v DC Output for temperature re-transmit is located
behind the cabinet façade, next to Remote Alarm access box. Connect wires as per label.
RS485 port - (Optional) terminal board for RS485 port is located behind the cabinet façade, next to
the Remote Alarm access box, connect wires as per label.
OPERATION
The warming cabinet is designed for an operating range of 90°F to160°F and is intended for indoor
use only. A transverse blower optimizes airflow and ensures tight temperature uniformity.
These units employ a programmable controller to control the temperature. The controller is located
on the facade of the unit. Please see the separate instructions, part number 143378, on the
operation of the controller used in the warming cabinet.
The cabinet utilizes an electrically operated heater to warm the product. The programmable control
is factory set with a cutout temperature of 160°F to prevent the cabinet from exceeding its design
limitations.
NOTE: The cabinet is equipped with two switches located on the façade. One is the main power
ON/OFF switch for the unit. The other is a three-position switch for the battery-powered alarm. The
alarm switch is placed in the middle, or OFF position, for shipment. When the Warming cabinet is
put into operation, the top of the switch should be pushed in to the ON position. With the switch in
the ON position, the battery will sound the alarm if the main power to the cabinet is interrupted. The
switch flipped to the bottom position is used to test the battery. This test must be done with power
uninterrupted to the cabinet. The alarm will sound if the battery is good. This test should be done
periodically. The battery is located on the control box that is on top of the unit behind the facade.