Alarms - Thermo Scientific Forma 900 Series Operating And Maintenance Manual

Thermo Scientific

Alarms

Section 3
The Model 900 and 5900 Series freezer alarms are displayed on the freezer
control panel. When an alarm is active, the indicator next to the alarm
description will light and there will be an audible alarm. Press the Silence
key to disable the audible alarm for the ringback period. The visual alarm
will continue until the freezer returns to a normal condition. The alarms
are momentary alarms only. When an alarm condition occurs and then
returns to normal, the freezer automatically clears the alarm condition.
Table 3-1. Alarm Indicators
Description
Power Failure
High Temperature Alarm
Low Temperature Alarm
Probe Failure see 3.2
Door Open
Wrong Power
Low Battery*
Low BUS Battery (optional)
Hot Condenser
High Stage Failure
Micro Board Failure
All alarm delays and ringback times are ±30 seconds.
* The automatic battery test runs immediately on power-up, then every 8 hours thereafter.
Delay Ringback
1 min. 15 min.
1 min. 15 min.
1 min. 15 min.
1 min. 15 min.
1 min. 15 min.
0 min. none
1 min. 8 hours
1 min. 15 min.
1 min. none
0 min. 15 min.
0 min. 15 min.
Model 900 and 5900 Series
Relay
Yes
Yes
Yes
No
No
Yes
No
No
No
Yes
Yes
3-1