Walinga Central-Vac Operator And Parts Manual page 34

100 Hours or Annually
1. Change the oil in the blower
reservoirs (2 reservoirs), and
clean head plate vent holes.
2. Check the function of the
vacuum relief valve.
3. Check condition of
continuity across cam-
locks.
Fig. 5-7 BLOWER RESERVOIRS
Fig. 5-8 RELIEF VALVE
Fig. 5-9 CAM-LOCKS