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If the ring is worn or
damaged it must be
replaced.
1. Remove the bolts C
and pull the Danfoss
motor out of the
flange.
2. Replace the tooth
ring D.
3. Fit the Danfoss
motor, bolts and
cover again.
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
Therefore, in case of leaks: DO NOT overtighten. Dis-
assemble, check condition and position of O-ring or
gasket, clean, lubricate and reassemble.
The O-ring is lubricated ALL THE WAY ROUND before
fitting on to the nozzle tube. Use non-mineral lubricant.
For radial connections only hand tighten them.
For axial connections, a
little mechanical leverage
may be used.
Level indicator
The level indicator
should be checked
regularly. When the
tank is empty, the
floater should rest on
the stop pin on the rod
and the O-ring at the
indicator should be
positioned at the top
position line A.
If any deviation is
found, pull out the plug
B, loosen the screws C
and adjust the length of
the cord.
B
A
C
Level indicator cord replacement
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 "Main
tank drain valve seal replacement") and loosen the
fitting holding the pole in position.
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 removed from the tank through
the filling hole.
WARNING! Do not attempt to enter the tank -
the float pole can be removed from the outside
of the tank!
4. Fit a new cord and assemble in reverse order. See
illustration under "Level indicator".
5. Adjust the gauge as described in paragraph "Level
indicator".
Main tank drain valve seal replacement
If the main tank drain valve leaks, the seal and seat can
be changed the following way.
NOTE! Do not enter the inside of the tank - the
parts can be changed from underneath the tank!
WARNING! Use eye / face protection mask
when dismantling the tank drain valve!
1. Make sure the tank is
empty and clean.
2. Let the valve be closed
and the string be 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 as-
sembly 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 as-
sembly.
6. Fit clip A again.
NOTE! Check function of valve with clean water
before filling chemicals into the tank!
Repair of polyester tank
Minor damages on the main tank can be repaired with
polyester tissue and a special glue. Contact your
HARDI dealer.
Demount
E
21
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