An alarm with higher severity takes precedence
over a low severity alarm. For example, if there
is a product alarm and low battery alarm:
• The alarm board beeper beeps every 6 seconds
to indicate the product temperature alarm.
• Indication of the low battery alarm is ignored
by the beeper, but is active in the display.
• Every 12 seconds, the display shows
PrHi
for 3 seconds followed by
bAtt
for 3 seconds.
For the remaining time, product simulator
temperature is displayed.
Alarm Set Points
Following are the alarm set points for ARL and
ARV cases:
Notes:
• A high temperature alarm typically activates
during case startup. This is normal since the
refrigerated space requires an extended period to
reach operating temperature. Product must not be
loaded until operating temperature is reached.
Premature stocking may result in product loss.
• Battery backup operation is possible for up to
6 hours. The initial condition of the battery
determines the length of time. Operation of
Safe-NET is compromised once the battery runs
low. Product integrity cannot be ensured until
power is restored and the battery is replaced.
MODIFYING ARL/ARV SETTINGS
The Safe-NET display module stores alarm set
points and alarm delay times for monitoring ARL
and ARV cases. The suggested default set points
may be modified.
Use a flat, narrow tool such as a small screw-
driver to remove the cover of the display module.
IMPORTANT!
•
Hussmann recommends against changing
any parameter value other than those described
herein. Modification of any other parameter may
result in unpredictable Safe-NET operation.
• The user must monitor each case after altering
product alarm set points and/or product alarm
time delays to verify proper operation.
3-3
P/N 0461391A
Hussmann Corporation • Bridgeton, Missouri 63044-2483 U.S.A.
Safe-NET™
Case
Model
Set
Point
Product
High Alarm
Set Point
Product
Low Alarm
Set Point
Product Alarm
Delay
(Minutes)
ARL
–
8ºF
2ºF
–
22ºF
90
ARV
36ºF
43ºF
32ºF
60
Summary of Contents for ARL
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