Hardi COMMANDER TWIN FORCE Series, Instruction Book

Page: 79 / 110

6 - Maintenance
6.15
DANGER! Do not enter the inside of the tank - the parts can be changed from the outside of the tank!
DANGER! Do not enter the inside of the tank - the parts can
be changed from the outside of the tank!
ATTENTION! Check function of valve with clean water before filling chemicals into 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.
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.
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
If the main tank drain valve leaks, the seal and seat can be changed
the following way.
Nozzle tubes and fittings
Drain valve seal renewal
Level indicator cord renewal