Operating instructions
19
What to do when ...
Should your THOMAS TWIN tt AQUAFILTER not function to your satisfaction first check by means of the check list given below whether the cause
of the irregularity is just a small matter before you contact the Customer Service Department.
Occurring irregularities,
faulty functions Reasons, elimination
General (all functions)
The appliance cannot be started up – Are the mains connection cable, plug and plugbox in order? ➔ Before checking disconnect the
main power supply plug and only have any necessary repairs carried out by an authorised
specialist
Is the appliance switched on? ➔ Check
Dust vacuuming (dry vacuuming)
Dust is discharged when vacuuming – Has the AQUAFILTER system been installed in accordance with the operating instructions?
– Is sufficient water in the dirty water tank and is the intake filter fully immersed in the water bath?
➔ Check
– Is the intake filter blocked directly by dirt or are the nozzles blocked in the intake connector?
➔ Dismantle and clean or rinse out with water.
Suction power slowly deteriorates – Is the HEPA filter blocked? ➔ Clean the HEPA filter.
– Are nozzles, suction tube or suction hose blocked by coarse dirt? ➔ Flexing the tube during
operation will release any dust and dirt blocking the tube and clear the stoppage.
Inadequate suction power – Is the Aqua injection nozzle blocked in the intake connector? ➔ Dismantle and clean or rinse out
with water.
– Is the HEPA filter blocked? ➔ Clean HEPA filters.
– Are nozzles, suction tube or suction hose blocked by coarse dirt? ➔ Flexing the tube during
operation will release any dust and dirt blocking the tube and remove the stoppage.
– Is the housing cover properly locked? ➔ Check.
– Is the electronic suction power controller set to MIN? ➔ Set suction power to MAX (orange
lamp lights up).
– Is the mechanical suction power controller on the hand grip open? ➔ Close the slider on the
hand grip.
A large number of drops of water have – In all probability there is too much dust in the AQUAFILTER system ➔ Clean the AQUAFILTER
collected on the inside of the housing cover system, renew the water
Washing cleaning
The suction power decreases suddenly – Is the dirty water tank full (float has responded)? ➔ Empty the tank.
– Is the appliance standing at an angle (has the float responded? ➔ Stand the appliance up
straight and switch the appliance off and on again.
Is water escaping from the blow-out – Is the float in the dirty water tank dirty and is the float switch no longer functional, i.e. it does
openings on the appliance not respond when the tank is full? ➔ Clean float and hinge.
– Has the dirty water tank been fitted together with the anti-swash insert, wet filter and motor
protection filter? -➔ Switch off the appliance immediately, dry the appliance and fit missing
parts.
An unusually large pool of water has – Are seals and sealing surfaces extremely dirty? ➔ Clean.
collected in the suction chamber
(a few drops are absolutely normal)
– Have you forgotten to fit the wet filter for the anti-swash insert.
Unusual heavy development of – Have you used Original THOMAS cleaning concentrate?
➔ Replace
foam in the dirty water tank
No cleaning liquid is provided – Is there any cleaning liquid in the spraying agent tank? ➔ Refill
although the pump is switched on
– Is the spraying nozzle blocked? ➔ Replace nozzle for some time in luke-warm water and after-
wards draw out strongly.
– Is the tank connection opening blocked? ➔ Remove fresh water tank and thoroughly suck out
the tank connection opening (connection point between fresh water tank and housing) with the
crevice nozzle to remove any possible contamination and dirt.
Is residual moisture to high, liquid is – Is the electronic suction power controller set to MIN? ➔ Set suction power to MAX (orange
no longer sucked up properly lamp lights up).
– Is the mechanical suction power controller on the hand grip open? ➔ Close the slider on the
hand grip.
– Is the nozzle really flat on the floor? ➔ Hold nozzle or suction cleaning with a slightly greater
incline.