Maguire Products VBD-150 Installation Operation & Maintenance page 66

VBD® - Vacuum Dryer®
*** ALARM:12 ***
MATERIAL SHORTAGE
Press Any Button
To SILENCE alarm
*** ALARM:15 ***
LOW AIR PRESSURE
Press Any Button
To SILENCE alarm
*** ALARM:16 ***
HEATER FAIL-SAFE
Press Any Button
To SILENCE alarm
*** ALARM:18 ***
VC MISSING
Press Any Button
To SILENCE alarm
*** ALARM:19 ***
RH MISSING
Press Any Button
To SILENCE alarm
66
Problem: Maximum Fill Time (VFT parameter) has been
reached before target material weight (VTH parameter) has
been achieved.
This alarm is triggered when the VFT parameter has been reached (Vessel
Fill Time) before the VTH (Vacuum Chamber High level), indicating
shortage of material in heating hopper or possible valve jam. The outcome
of this alarm is controlled by the Material Shortage Alarm settings. See
page 27.
Solution: Check material supply. Check Vacuum Chamber fill valve
located at the base of the heating hopper.
Problem: Air pressure sensor has detected air pressure
below 50 psi.
Solution: Check exhausting lockout valve located on the front lower left
side of VBD-150. Ensure that the valve is open. Check pressure of air
supply.
Problem: The temperature safety switch has opened due
to an overheat condition.
Located on the top of the Heater Tube is a Temperature Safety Switch. If
the temperature of the heater exceeds the safety switch maximum, this
switch opens, shutting down the entire dryer (FATAL Alarm).
Solution: Allow the dryer to cool. Open the left side panel of the dryer and
locate the Heater Tube Safety Switch on the upper side of the stainless
steel heater tube. Press the red safety switch button to reset the
Temperature Safety Switch. If problem occurs repeatedly, contact Maguire
Technical Support.
Problem: The Vacuum Chamber is missing.
If Vacuum Chamber load cell is reading 4.5 pounds (2000 grams) below
tare during AUTO run, this alarm is triggered and Dryer stops (fatal). This
alarm is generally caused by a missing Vacuum Chamber but may also be
caused by the dryer Vacuum Chamber load cells having been zero
calibrated while material was in the Vacuum Chamber.
Solution: If Vacuum Chamber is missing replace Vacuum Chamber. If
Vacuum Chamber is in place, ensure the chamber is empty and zero
calibrate the load cells. If load cells are damaged, a zero calibration may
detect this.
Problem: The Retention Hopper is missing.
If Retention Hopper load cell is reading 6.6 pounds (3000 grams) below
tare during AUTO run, this alarm is triggered and Dryer stops (fatal). This
alarm is generally caused by a missing Retention Hopper but may also be
caused by dryer Retention Hopper load cells having been zero calibrated
while material was in the Retention Hopper.
Solution: If Retention Hopper is missing replace Retention Hopper. If
Retention Hopper is in place, ensure the hopper is empty and zero
calibrate the load cells. If load cells are damaged, a zero calibration may
detect this.
Rev. August 31, 2016 – VBD-150
Maguire Products, Inc.