49
HARDI
®
COMMANDER OPERATOR’S MANUAL
Shock absorbers
If the shock absorbers loose their efficiency or start
leaking oil, they should be replaced.
Level indicator 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.
Cord renewal, level indicator
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 replacement, drain valve
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.
Maintenance
A
C
B
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.
NOTE! Check the function of the 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 reassemble.
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.