Hardi MASTER VHY Series, Instruction Book

Page: 37 / 48

37
GB 14 02 MA
Maintenance
T191-0016
T199-0001
T199-0001
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 as-
semble again.
5. Assemble the valve
assembly again using a
new valve seat
E . Lubri-
cate O-rings F before
assembly.
6. Fit clip A again.
NOTE! 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 . Disas-
semble, check condition and
position of O-ring or gasket.
Clean, lubricate and reassem-
ble.
The O-ring must be 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.
T199-0002
Le Le Le Le Levvvvvel indica el indica el indica el indica el indicator adjustment tor adjustment tor adjustment tor adjustment tor adjustment
The level indicator reading should be checked regularly.
When the tank is empty, the float should lie on the stop
pin, of the rod, and the O-ring on the indicator should be
positioned at the top
position line
A .
If any deviation is found,
pull out the plug
B , loosen
screws C , and adjust the
length of the cord.
Cor Cor
Cor Cor Cord r
d r
d r d r d rene
ene
ene ene enew
w
w w wal, le
al, le
al, le al, le al, levvvvvel indica
el indica
el indica el indica el indicator
tor
tor tor tor
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”) 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 taken out of the tank through the
filling hole.
DANGER! Do not attempt to enter the tank - the
float pole can be removed from outside the tank!
Seal r Seal r
Seal r Seal r
Seal rene ene
ene ene
enew w
w w
wal, dr al, dr
al, dr al, dr
al, drain v ain v
ain v ain v
ain valv alv
alv alv
alve ee
e
e
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 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. The valve must be closed and the string loose.
A
B
C
T191-0018