■ **SOURCE ALARM** text
is flashing and audible
alarm is present
(screen #90 on page 17)
*This indicates a weak or
empty liquid supply.
Liquid level is above the
LOW level setpoint, but
isn't rising fast enough to
satisfy the system.
■ **TEMPERATURE ALARM**
text is flashing and audible
alarm is present
(screen #90 on page 17)
■ **FILL VALVE** text is
flashing and audible
alarm is present
(screen #90 on page 17)
37
LIQUID LEVEL XX.XCM LID TEMP.-XXX C
SYSTEM STATUS SOURCE ALARM
FILL/START FILL/STOP MUTE REPORT
o
** **
SOURCE ALARM
** **
LIQUID LEVEL XX.XCM LID TEMP.-XXX C
SYSTEM STATUS TEMPERATURE ALARM
FILL/START FILL/STOP MUTE REPORT
o
TEMPERATURE ALARM
** **
** **
- Troubleshooting Guide: Alarms -
• Supply tank is empty
• Supply tank is shut off
• Supply tank pressure is too
low
• 3 or more storage units
are filling at one time from
a single supply line
• Temperature has risen
above setpoint.
• Probe has been inadvertently
moved.
• Fill Valve disconnected from
power source
• Fill Valve defective
• Replace supply tank
• Open manual valve on
supply tank if closed
• Check pressure in supply
tank - 22 p.s.i. maximum,
18 p.s.i. minimum
• Storage vessels will fill very
slowly and alarm will correct
itself.
• Lid has been open too long
• Low liquid nitrogen level
• Move probe to original location
• Connect Fill Valve power
cord correctly using diagram
on page 7
• Replace Fill Valve
CONDITIONS
CAUSES
SOLUTIONS
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