Zodiac EVAC 90 - Page 7

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EVAC
Commercial Marine Equipment
VV
VV
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AA
AA
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CUUM CUUM
CUUM CUUM
CUUM
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T
OILETOILET
OILETOILET
OILET
OPERATION AND MAINTENANCE
Date:
Doc.
25 Jan 2005 3:01103A
5775500 CONTROL MECHANISM, EVAC 90, SQUATTING TOILET
OperationOperation
OperationOperation
Operation
The functioning of the vacuum toilet is entirely controlled by the control mechanism.
Vacuum in the sewage piping system is the actuating medium.
Description of flushing sequence see doc. 3:01025C.
Jet 1 (doc. 3:01025C pos 5) controls the discharge valve opening time.
Jet 2 (see doc. 3:01025C pos 4) counters the effect of quick changes in the vacuum supply.
Jet 3 (doc. 3:01025C pos 15) delays the vacuum changes in chamber 14 (see doc. 3:01025C). This prevents a new
flushing procedure to start before the previous procedure has stopped.
MaintenanceMaintenance
MaintenanceMaintenance
Maintenance
Check that the air filters 4 and 5 are not blocked.
Check hoses and pipe connections for leaks.
Toilet discharge time
Jet 1 Short discharge period Red jet 1.5 sec.
Normal discharge period Blue jet 2.0 sec.
Longer discharge period White jet 2.5 sec.
Less restriction shortens the time
Water valve opening time
Jet 6 Normal bowl water level White jet
Low bowl water level Blue jet
Pneumatic push button
Control mechanism
Jet 6
(Inside the plastic cover)
Water valve
Discharge valve
Filter 4
Filter 5 (Inlet for atmospheric air to
discharge and water valve)
Jet 3
Jet 2 Jet 1