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Chapter 4: Operation 
41 of 60 
 
 
  
Alarm Flags 
An alarm message will be shown if any alarm condition occurs.  A message will pop up on 
the screen until the alarm condition is resolved.  The operator can press “OK” on this pop-up 
to hide the screen temporarily, but if the alarm condition is still unresolved, then the message 
will reappear after a short delay.  During an alarm condition, a visual alarm will be activated.    
The following is a list of all alarm names and descriptions:  
Alarms with Descriptions 
Hopper low level alarm:  Hopper is about out of material 
Hopper out of material:  Hopper is out of material 
Inventory cleared:  Operator has cleared the inventory (only logged) 
Extruder no rpm detected_alarm:  ONLY ON GH FULL CONTROL 
Extruder no flow detected_alarm:  ONLY ON GH FULL CONTROL 
Hauloff drive failure alarm:  ONLY ON GH FULL CONTROL 
Loadcell over max alarm:  check loadcell circuit  
Reload too long alarm:  First indication that you are about to run out of material  
System not stable alarm:  System has been unstable for too long. 
hopper flow over allowed max:  System rate is above allowed maximum setting 
extruder overspeed:  Extruder is out of allowed linear range 
extruder underspeed:  Extruder is out of allowed linear range 
hauloff overspeed:  Hauloff is out of allowed linear range (ONLY ON FULL CONTROL) 
hauloff underspeed: Hauloff is out of allowed linear range (ONLY ON FULL CONTROL) 
feeder overspeed (GHF only):  GHF Feeder is running too fast 
feeder underspeed (GHF only):  GHF Feeder is running too slow 
surge hopper empty alarm (OPTIONAL):  Prox is uncovered in Surge bin 
plc battery low:  replace battery with power on as soon as possible 
plc memory module loaded:  Indicates you have upgraded the software. 
 
Figure 48: Typical Manual Control Operator Screen 
 
The dump valve opens as soon as you touch the “Reload Off” button.  The button then 
changes to show “Reload On”.   
Print Inventory 
The print inventory menu item is used to produce on demand, inventory printouts. Before 
selecting this item, be sure that the printer is properly connected and ready. This function will 
generate an inventory. 
Note:   The system will stop if you attempt to turn the manual reload on.  This 
could be devastating if you are running the extruder.