Taylor-Wharton CS Series - Manual (Page 34)

32
CS SERIES
Alarms and Error Conditions
The CS SERIES Control System control tracks many different conditions in the freezer
and therefore, has a full complement of alarms associated with these different
conditions. As alarms occur, they cause an audible beep as well as a flashing red
light on the same wheel. A remote alarm relay is also triggered following a user-
designated period of time, after the error condition occurs, if it is not corrected. In
addition, the error condition is displayed on the top line until the error condition is
corrected. When an error does occur, the audible alarm may be muted by pressing
the designated button. The audible alarm will then be silent until activated by a new
error condition. A red light will continue to flash until all errors are corrected. The
remote alarm will be activated if the power is interrupted.
The High Temperature Alarm for Thermocouple #1 can be set through the menu
system. This alarm is activated if the temperature rises above the designated
temperature. The alarm temperature can range from 0ºC to -190ºC. It can also be
disabled.
High Temperature Alarm for Thermocouple #2 can be set through the menu system.
This alarm is activated if the temperature rises above the designated temperature.
The alarm temperature can range from 0ºC to -190ºC and it can also be disabled.
System Alarms
A Low LN
2
Supply Alarm can be set through the menu system. This alarm is activated
if the solenoid valve is not closed within a designated time period after a fill starts.
The solenoid valve can be closed either automatically (the LN
2
level reaches the
STOP FILL sensor) or manually (the stop fill button is pressed). To stop the timer
which activates this alarm. The possible choices for this alarm are None, 15, 30, 45,
60 minutes, 2 or 3 hours. This alarm does not correct itself until the fill is stopped
(the solenoid closes).
The Sensor Error Alarm can be set through the menu system. This alarm is activated
if the control detects a sensor error such as an open sensor. The possible choices
are ENABLE or DISABLE. An open sensor can be confirmed through the TEST LEVEL
SENSORS option in the menu system.
A Remote Alarm Timer can be set through the menu system. This is the amount of
time allowed to pass before the remote alarm relay is triggered if an error condition
is not corrected. The possible choices are None, Immediate, 30 minutes, 60 minutes
or 2 hours.
Lid Open Too Long Alarm can be set through the menu system. This is the amount of
time the lid can be open before it triggers an alarm condition. The possible choices
are None, 1, 2, 5 or 10 minutes.
Thermocouple Alarm can be set through the menu system. This alarm is activated
if either thermocouple experiences an open circuit. Your choices are ENABLE or
DISABLE.
Test Alarms
Audible, visual and remote alarms can be tested at any time by the user through the
menu system. Follow the instructions on the display to hear the audible “chirping”
indicator of an alarm or to see the red status wheel flash or to trigger an immediate
relay closure of the remote alarm.