RAM™ 280-F Frozen Fry Dispenser
Copyright © 2011 Automated Equipment LLC All rights reserved.
29
Temperature Probe Calibration
The RAM 280-F Frozen Fry Dispenser has
used two different temperature control
configurations, one using a single probe and
the other a two probe configuration. The single
probe configuration, serial number
LONR0903C00692 and going forward, uses a
single temperature probe mounted to an
insulated block on the top wall of the cabinet
compartment in the upper right. It is the
temperature displayed on the control panel and
also used to control the refrigeration system.
The two probe configuration, serial numbers
LONR0903C00691 and earlier, has one probe
mounted to an insulated block on the top wall of
the cabinet compartment in the upper right. This
probe measures cabinet temperature and is the
temperature displayed on the front of the
operator panel. The other probe is below the
block and mounted against the back wall near
the refrigeration accumulator. This probe
controls the refrigeration system.
The temperature control is factory set. Unless
the controller or the temperature probe(s) are
replaced, it will not be necessary to change
these values. In addition, raising or lowering
the set point temperature can compensate for
small discrepancies between the probe
temperature and actual temperature. However,
differences of greater than 2º should be
corrected. The method for adjusting the
temperature probe is simple, but requires an
accurate thermometer (preferably certified) to
measure the probes deviation from the actual
temperature:
Place the thermometer into the freezer
compartment as close to the cabinet
temperature probe as practical. The machine
should be operating at or near normal operating
temperature, -2°F to 10°F (-19°C to -12°C). If
the thermometer has a sensing probe, make
certain that it is not touching any metal in the
compartment, otherwise it may give a false
reading.
Wait 5 minutes with the dispenser operating
normally and the door closed.
Check the thermometer reading and compare it
with the temperature displayed on the operator
panel. The best time to check is just after the
compressor shuts off.
If the difference between the display and the
thermometer is greater than 2º, an adjustment
should be made.
Note
: Calibration of the temperature probe is
performed from the Diagnostic Functions Menu
using the Operator Panel on the front of the
Dispenser and may require a manager’s
password to access the menu.
To access the Diagnostics Menu, on the
Operator Panel, press the Up Arrow
Button until "
U4
" is displayed then press the
Enter
button.
The display will change to "
-----
" Enter the
managers password (if set) using the basket
size buttons. Then press the Enter
button.
Note
: The Basket Size Buttons also function as
number buttons:
(e.g. the left medium basket button is number 2,
and the right large basket button is number 6.)
The display will change to "
d01
". Press the Up
Arrow
button until "
d05
" is displayed then
press the Enter
button to access the Probe
Calibration Function.
The display will read the current cabinet
temperature the probe is detecting.
Adjust the probe temperature to match the
correct temperature using the Up Arrow
button to raise the displayed temperature or the
Down Arrow
button to lower the displayed
temperature. (Note: each time an arrow button
is pressed will change the temperature 0.1°).
Once the displayed temperature matches the
thermometer temperature press the Enter
button to save the calibration and exit the
function.
The display will read "
d01
". To return to the
main screen press the enter
button.