360077-1/O
113
Horizon Series™ - Laboratory, Pharmacy, and International Blood Bank Models
24.4.1
Monitor Offset
►
Adjust if temperature displayed on the monitor does not match measured chamber temperature.
►
Value is factory-set to match an independent thermometer.
►
Value can be changed from -10.0 °C to +10.0 °C.
NOTE
►
If the variance is within acceptable limits, changing the offset value is optional.
►
Probes in the bottle are connected to the monitoring system and sense chamber
temperature. These probes do not affect refrigerator setpoint.
Obtain:
►
Independent thermometer, calibrated and traceable per national standards.
►
Tape, to attach thermometer to temperature probe.
Measure the chamber temperature:
1
Remove the probe from the probe bottle.
2
Unscrew the cap from the bottle.
3
Tape the thermometer to the temperature probe, and place them in the bottle. The probe and
thermometer should be immersed at least 2” (50 mm).
4
Close the door and allow the chamber temperature to stabilize for 10 minutes.
5
Observe and note the thermometer temperature.
6
Remove thermometer and probe from bottle and remove tape.
7
Replace bottle cap, ensuring a tight fit.
8
Place the probe in bottle, immersing at least 2” (50 mm).
Enter the new offset value:
►
Lower the offset value to lower the displayed monitor temperature.
►
Raise the offset value to raise the displayed monitor temperature.
EXAMPLE
►
Measured temperature (at the probe bottle) is 4.0 °C
►
Displayed temperature is 4.5 °C
►
Offset adjustment value is -0.5 °C
1
Hold
Up Arrow
and
Down Arrow
for three seconds. MONITOR lamp will flash to indicate entry into
program mode.
2
Press
SEL
until only the MONITOR lamp flashes.
3
Hold
SET
, then press
Up Arrow
or
Down Arrow
to change the setpoint.
4
Release
SET
button.
5
Hold
Up Arrow
and
Down Arrow
for three seconds. MONITOR lamp stops flashing to indicate exit
from program mode. New settings are saved.
