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6 - Maintenance
Level indicator cord renewal
If the cord on the level indicator has to be changed, the float guide pole is removed:
1. Remove the tank drain valve (see paragraph "Drain valve seal renewal") and loosen the fitting holding the pole in posi-
tion.
2. Pull the pole down through the drain valve hole till it is free in the top of the tank.
3. The pole can now be taken out of the tank through the filling hole.
€
DANGER! Do not enter the inside of the tank - the parts can be changed from the outside of the tank!
Drain valve seal renewal
If the main tank drain valve leaks, the seal and seat can be changed the
following way.
€
DANGER! Do not enter the inside of the tank - the parts can be
changed from the outside of the tank!
±
WARNING! Use eye / face protection mask when dismantling the
tank drain valve!
1. Make sure the tank is empty and clean.
2. The valve must be closed and the string loose.
3. Pull out the clip (A) and pull down connecting piece (B). The entire
valve assembly can now be pulled out.
4. Check cord and valve flap assembly (C) for wear, replace seal (D)
and assemble again.
5. Assemble the valve assembly again using a new valve seat (E). Lubricate O-rings (F) before assembly.
6. Fit clip (A) again.
μ
ATTENTION! Check function of valve with clean water before filling chemicals into the tank.
Nozzle tubes and fittings
Poor seals are usually caused by:
• Missing O-rings or gaskets
• Damaged or incorrectly seated O-rings
• Dry or deformed O-rings or gaskets
• Foreign bodies
In case of leaks:
DO NOT overtighten. Disassemble, check condition and position of O-
ring or gasket. Clean, lubricate and reassemble.
The O-ring must be lubricated ALL THE WAY ROUND before fitting on to
the nozzle tube. Use non-mineral lubricant.
For AXIAL connections, a little mechanical leverage may be used. For
RADIAL connections only tighten by hand.
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