Follett REF20-LB Installation, Operation And Service Manual page 11

Alarming Contacts
This unit is equipped with dry contacts that may be connected to a third
party monitoring system . The contacts are located on the back of the
facade . Touchscreen units utilize Alarm 1 . Each set of dry contacts has a
Common, a Normally Open and a Normally Closed connection point . By
default, Alarm Relay 1 is set to activate with any of the following alarms:
Alarm 1 High temp, Alarm 1 Low temp, Door Open Alarm, and Power Loss
Alarm .
Refer to the wiring diagram in this document for more information .
Probe calibration
The temperature probes can be offset –9 .9 to +9 .9 in the Advanced Menu
settings to deliver a more precise temperature reading .
1. Select Settings
2. Select Advanced settings and enter code 1,1,1,1 . Confirm with
Check mark
3. Using the DOWN arrow, scroll through Advanced Settings to
Calibrate screen and select Calibrate
4. Place desired probe (P1-control, P2-Defrost, P4-Top probe,
P5-Bottom probe) in an ice bath and allow 3-5 minutes for
temperature stabilization .
5. Press "Offset" and use the UP/DOWN arrows to offset the probe
reading to the proper value .
Note: In the event of a factory reset, the offset value will return to 0.
Screen saver
The screen saver will replace the home screen and display a blank screen,
time and date, or the temperature . When the screen is touched or the unit
has an alarm or event, it will return to the home screen . The screen saver
can be changed in the advanced setting .
Screen saver function: blank, time and date, or temperature .
Screen saver time (sec): 0—600 seconds between the last touch of the
screen to the activation of the screen saver .
01134592 – REF20/25 LB, PH, BB
Fig. 17
REAR PANEL CONNECTIONS
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