“PTFE” GASKET PACK REPLACEMENT
After the depressurisation procedure is completed, proceed as follows:
Disconnect the pumping head pos.1 from the
system and the lantern of the dosing pump.
Clean the pumping head to ensure the operator
can safely handle the component.
Loosen the ring nut pos.11 and remove it.
Check if the piston (pos.2)is worn out. If it is
scored or cut, replacement is recommended. In
this case, loosen the dowels pos.15.
Remove the gasket pack pos.3and place the
new pack into the pumping head paying
attention to the gasket orientation.
Tighten the clamping ring nut pos.11 till it
touches the gaskets.
Place the pumping head pos.1on the piston
pos.2, push it against the lantern, then fix it with
screws pos.4.
“PTFE” gaskets adjustment and compression
To ensure this type of gaskets is water-tight, they need adjusting.
If you replace the gaskets, follow the steps as indicated
hereunder.
Connect the dosing pump and possibly use a harmless
liquid; tighten the ring nut one-fourth of a turn to apply
light pressure on the gaskets.
The upper part of the head will drip.
Let the pump run for 4/5 hours before tightening the ring
nut again.
After this time, tighten another fourth of a turn.
Let the pump run 2 to 3 hours before tightening the ring
nut again; verify that it drips less.
This tightening and checking procedure should be carried
out till the dripping stops.
The gasket pack must be checked and adjusted regularly. While carrying out these operations,
make sure not to tighten the ring nut too strongly to avoid damaging the gaskets.
