Forma Scientific 3546 - Page 31

Forma Scientific, Inc.__________________________________________________Operation
4-8
Alarms and Indicators, Table 4-1
Alarm Condition Visual
Indicator
Audible
Alarm
Reset Delay
(Ringback)
Alarm
Relay
State
None Off Off
On
*
Temp.> Over
Temp Setpoint
Over Temp
LED On
On 30 Minutes
Off
*
Low Water in
Water Jacket
Flash Add
Water LED
On 30 Minutes
Off
**
% CO
2
Dev
Setpoint ± 1%
CO
2
Alarm
LED On
On 17 Minutes
Off
***
Tank1 Low Pressure Low
#1
On
Off
***
Tank2 Low Pressure Low
#2
On
Off
Power Failure Off Off
Off
*
Silenced audible alarm will ring back in 30 minutes if the alarm condition still
exists. The Alarm LED will remain lit.
**
Condition must exist for four minutes before alarm activates. Silenced alarm will
extinguish the led alarm light, silence the audible alarm and change the alarm relay to the
on state. the alarm system will ring back after 17 minutes if the alarm condition still
exists.
REMOTE ALARM RELAY WIRING DIAGRAM
***
When the CONTROL switch on
the gas guard is turned off the indicator light will be extinguished and the audible alarm will be
silenced. The built-in alarm relay on the Model 3546, however, remains active.
Figure 4-7