Maguire Products VBD-1000, Installation Operation & Maintenance

Page: 62 / 85

Maguire Products, Inc.
Rev. March 5, 2018 – VBD-1000 Touchscreen
62
VBD

- Vacuum Dryer

ALARM:04
HH OVERHEAT
Problem: The heating air temperature has drifted above
set-point.
If the heating air temperature (T1a sensor) is over the degrees specified
in parameter OT1 (default 6° F or 6° C) for a time greater than the time
in seconds specified in OT1, then the alarm is triggered and the heater
output will drop by 20%. The alarm will occur but the machine will keep
running. See OT1 parameter for more information.
Solution: No solution is necessary under normal circumstances as the
dryer is alerting to a temperature adjustment. If this alarm continued to
repeat, contact Maguire Technical Support.
ALARM:05
PURGE HTR NO HEAT
Problem: No heat or inadequate heat detected by the
Purge Heater RTD.
This alarm is triggered by the NH2 parameter. NH2 parameter is the
maximum time limit, in seconds, after the heat cycle begins, during
which one of the following two conditions must be detected: Either the
temperature must climb 10 degrees, or the temperature must move at
least 10 percent toward the target temperature. If neither condition is
met the “NO HEAT” alarm will sound. Such an occurrence would signal
a failure of either the heater or the compressed airflow. This parameter
and consequent alarm protects the purge heater from burn out in the
event the compressed air failure or airflow is blocked.
Solution: Check compressed airflow to the purge heater is adequate.
Check that the air line that supplies the solenoid valve in the inlet of the
purge heater is properly attached.
ALARM:06
PURGE SP EXCEEDED
Problem: The purge air temperature has drifted above
set-point.
If the purge air inlet temperature (T2a sensor) is over the degrees
specified in parameter OT2 (default 6° F or 6° C) for a time greater than
the time in seconds specified in OT2, then the alarm is triggered and the
heater output will drop by 20%. The alarm will occur but the machine
will keep running. See OT2 parameter for more information.
Solution: No solution is necessary under normal circumstances as the
dryer is alerting to a temperature adjustment. If this alarm continued to
repeat, contact Maguire Technical Support.
ALARM:07
PURGE OVERHEAT
Problem: The purge air temperature has drifted above
set-point.
If the purge air temperature (T2a sensor) is over the degrees specified
in parameter OT2 (default 6° F or 6° C) for a time greater than the time
in seconds specified in OT2, then the alarm is triggered and the heater
output will drop by 20%. The alarm will occur but the machine will keep
running. See OT2 parameter for more information.
Solution: No solution is necessary under normal circumstances as the
dryer is alerting to a temperature adjustment. If this alarm continued to
repeat, contact Maguire Technical Support.