3
Vacuum System Operation
and Maintenance Manual
Vacuum Breaker Operation
1. The vacuum breaker control is located on the top of the hose reel control panel on the curb side.
2. On units with belt driven compressors, the parking brake must be engaged and the splitshaft/PTO must be
engaged for the vacuum breaker doors to function.
3. On units with hydrostatic driven compressors, the parking brake must be engaged for the vacuum breaker doors
to function.
4. While vacuuming, the vacuum breaker switch must be in the ON position with vacuum breaker doors open.
When the debris body reaches its maximum capacity, the vacuum breaker doors will close, stopping all air flow.
5 When this condition occurs you must either drain off the excess water in the debris body or dump the material
out of the debris body to allow the vacuum breaker doors to reopen.
6. With the vacuum breaker switch in the ON position the doors will also close when the operator disengages the
parking brake. This feature is to ensure there will be no carry over of material from the debris body to the
vacuum compressor during transport.
7. With the vacuum breaker switch in the ON position, if the operator needs to stop the flow of air to dislodge any
debris from the end of the air tube he can just reach over and turn the vacuum breaker switch to the OFF
position to stop the air flow. Then, turn the switch back to the ON position and continue vacuuming.
8. The vacuum breaker switch should be left in the “ON” position at all times,
except
as described in #7.
Lubrication Note: There are two grease fittings on the vacuum breaker door assembly shaft that requires grease
monthly.
