Section 3 – SR-2 Software Description
Time to Alarm
Micro Rev
All
HMI Rev
All
Choices
5 to 120 minutes in 1-minute
increments
Factory Set
30 minutes
Exceptions Only available if BLOCKED AIR
CHUTE DETECT is ENABLED.
Description This feature selects the time
interval that must be exceeded to cause Alarm Code
46 CHECK AIR FLOW to occur. This condition must
exist with a temperature differential, in excess of that
specified by TEMPERATURE DIFFERENTIAL
above, in order to set Alarm Code 46 Check Air
Flow.
Door Open Over-ride
Micro Rev
All
HMI Rev
All
Choices
ENABLED or DISABLED
Factory Set
ENABLED
Exceptions Only available if BLOCKED AIR
CHUTE DETECT is ENABLED.
Description This feature determines if a door
switch should interrupt the operation of the
BLOCKED AIR CHUTE DETECT feature. If set
ENABLED, then monitoring ceases when the door is
opened and is resumed 45 minutes after the door is
closed. If set DISABLED, monitoring is not
interrupted when a door opens.
Discharge Pressure Setpoint
Micro Rev
All
HMI Rev
All
Choices
380 to 440 PSIG
Factory Set
415 PSIG
Exceptions
Description This feature allows the head
pressure setpoint to be adjusted. This pressure
determines when the microprocessor will enter a
temporary operating mode to prevent unit shutdown.
Do not change this setting unless instructed to do
so.
Water Temperature Setpoint
Micro Rev
All
HMI Rev
All
Choices
180°F to 210°F (82°C to 99°C)
Factory Set
210°F (99°C)
Exceptions
Description This feature allows the water
temperature setpoint to be adjusted. This
temperature determines when the microprocessor
will enter a temporary operating mode to prevent
unit shutdown. Do not change this setting unless
instructed to do so.
Limited Alarm Resets
Micro Rev
All
HMI Rev
All
Choices
ENABLED or DISABLED
Factory Set
DISABLED
Exceptions
Description This feature modifies the ability to
repeatedly clear certain alarms. If these alarms
occur repeatedly, they may indicate a need for
service to prevent unit or product damage. These
alarms are as follows:
Alarm Code 23 Cooling Cycle Fault
Alarm Code 24 Heating Cycle Fault
Alarm Code 32 Refrigeration Capacity Low
Alarm Code 82 High Comp Discharge Temp
Setting this feature to ENABLED will allow the above
alarms to be cleared conventionally 2 times in a
continuous 12 hour period. If any of these alarms
are cleared more than 2 times in 12 hours, all
subsequent occurrences can only be cleared from
the Guarded Access Menu. This helps ensure that
the alarms receive the attention of service
personnel. The 12 hour timer is reset when any of
the above alarms is cleared from the Guarded
Access Menu. The 12 hour timer is not reset with a
unit or controller power-down.
Setting this feature DISABLED will allow the above
alarms to be cleared conventionally an unlimited
number of times.
3-17
31 January 2005
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