14
ATTENTION!!!!!
It’s necessary to effectuate all the operations with gloves and glasses suitable for the
product used then consult the supplier of the chemical product.
3.4 Replacing worn parts
Fuse replacement.
Proceed as follows:
1. Put at minimum the knob of the piston regulation of the run (in the pump where it is present)
2. Unscrew the fixing screws of the box
3. Open the front and the back part of the box minding the spring of the knob where it is present.
4. Replace the fuse that is well visible.
5. Assemble all the parts paying attention that the piston regulation knob (where it is present) is at
the minimum position and that the spring is in .
Valves replacement
NB: Where ball valves are to be replaced, it is recommended that the complete cartridge
assembly is replaced, due to the many small parts within.
The procedure is as follows;
1. Using a 19 mm spanner gently remove the cartridge.
2. If a ball valve cartridge is fitted remove the whole assembly and replace with a new one taking
care to ensure that the arrow is pointing in the direction of flow, (vertically upwards).
3. If lip valves are fitted, these can be replaced, once again ensuring that they are refitted the
correct way up, with their open end downwards, and the lip part in the direction of flow.
4. Refit the nipples and hose clamps to complete.
Diaphragm and O-rings replacement
Proceed as follows:
1. Undo the 4 bolts with an hexagonal key.
2. Remove the pump head.
3. Remove the old O-ring from the head carefully using a small screw driver.
4. By hand, or with pliers if necessary unscrew the diaphragm, and replace with the new one.
Hand tight only. Before screwing the diaphragm into place, add a small quantity of Loctite® 222
onto the thread.
5. Refit the dosing head, tightening the head bolts sequentially and carefully to ensure an even
airtight seal. Caution do not over tighten.
We also recommend adding a few drops of Loctite® 222
on to the thread of the screws that hold the head.
ENGLISH
