I� General Full Size Canister Issues07�03�07
2
A. Full Bag Indicator
1. General information
A pressure sensor, located on the main PC board, governs the “full bag indicator” feature� This sensor is connected to the bag cavity via
an air tube� When the pressure exceeds the actuation limit for a minimum time period of 20 seconds (+ or –10), the red light blinks on the
handle� If this condition goes unchecked the canister may over heat and shut down�
NOTE: Hose connects to white pressure sensor on PC board�
2. The red light on the handle is blinking.
1. Bag is sufciently full to restrict airow.
2. Hose, wand, or attachment may be clogged or attachment size is restricting airow.
3� Sensor or connecting tube may be clogged�
4. For ltering purposes HEPA bags have very small airow pores. Because these pores are so small, they are susceptible to clogging
when vacuuming very ne debris such as drywall dust or talcum powder. In these instances, the bag may not appear to be full.
5� If none of the above conditions exist, and the full bag indicator light on the handle is blinking, the sensor may be set improperly�
6. The hose or PC board may be bad. Remove the HEPA lter and see if the FBI light goes out. If the FBI light stays “ON” the hose is
should be replaced, otherwise the PC board needs to be replaced�
3. The full bag indicator fails to activate when the bag is full
1. The bag may be lled with uff. Light, low-density materials can ll the bag but still allow enough airow through so that the pressure
never reaches the sensor’s actuation limit�
2� There may be a problem with the wiring in the handle/hose assembly� Try a known good hose and re-test�
3� There may be a problem with the handle PC board�
4� The air tube may be dis-connected or damaged�
5� If none of the above conditions exist and the full bag indicator on the handle does not blink when the bag is full, the sensor may be set
improperly�
6. The hose or PC board may be bad. Remove the HEPA lter and see if the FBI light goes out. If the FBI light stays “ON” the hose is
should be replaced, otherwise the PC board needs to be replaced�
I. General Full Size Canister Issues
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