Evac 910 - EVAC 910 Toilet Troubleshooting; Common Flushing Problems and Fixes

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1
VACUUM TOILET
TROUBLE SHOOTING
Date:
Doc.
Filter ( not in USPH models )
11 Nov 2010 002031-3
EVAC 910, WALL MODELS
Push button
Water valve
Discharge valve
Vacuum
hose
Control mechanism
Mini-check valve
Flushing ring
Shut-off valve
Seal ( not in USPH models )
Vacuum breaker
Water supply hose
Trouble
Toilet is discharging continuously
(discharge valve open)
Bowl does not become empty
when ushed
No water or too little rinsing
water
Toilet is overowing
Toilet does not ush.
Cause
• Foreign object in bowl or
in discharge valve
• Blocked air relief tubing
• Quick relief valve malfunction
• Discharge valve blocked
• Leak in discharge valve housing
• Discharge pipe blocked
• Rubber sleeves leaking
• Water shut-off valve closed
• No water pressure
• Filter full or dirt in water valve
• Flush ring loose
• Flush ring clogged
• Filter blocked up in water supply
• Water valve jammed in open
position
• Bowl clogged or discharge valve
not operating
• Misuse (buckets of water thrown in
the bowl)
• Too low vacuum (less than 30%) to
ush
• No vacuum or low vacuum (less
than 30kPa)
• Clogged mini-check valve
• No impulse from push button
• Jammed control mechanism
• Jammed quick relief valve
Remedy
• Shut off the problematic branch line
valve
• Remove foreign object
• Change discharge valve
• Check and if necessary change
control mechanism
• Check relief valve operation
• Clear stoppage, if any, in discharge
valve
• Sharp tools may damage rubber
• Check that rubber sleeves are
undamaged and correctly tted
• Check relief valve operation
• Open valve
• Provide water pressure
• Clean lter
• Connect ushing ring
• Clean ushing ring
• Clean lter
• Close water shut-off valve
• Clean / change water valve nozzles,
springs, rubbers
• Discharge bowl, valve and piping
with normally ushing
• Check vacuum level, remove
blockage in piping
• Clean / change mini-check valve
• Check hoses and membrane of push
button
• Change control mechanism
• Check air lter condition. It should
be place.
• Check relief valve operation
Relief valve