Operation Manual
ITEM
DESCRIPTION
25
34
35
42
43
45
50
65
66
Shim Pack
'O' Ring Shaft
Setting Ring
Shaft Sleeve
‘O’Ring Sleeve/Rotor
‘O’Ring Shaft/Sleeve
‘O’Ring Product
‘O’Ring Seal Housing/Rotorcase
Seal Housing
10 Replacing 'O'Ring Seal
10.1 Product 'O'ring seal replacement
1. The product 'O'ring (50) can be
removed from the front of the
pump with a screwdriver or similar
tool once the rotor retention nut (9)
and rotor (13) are removed. Take care
not to damage the sleeve surface.
10.2 'O'ring seal fitting
1. Press a new product 'O'ring fully into
the seal housing (66), replace the rotors
and rotor retention nuts. To aid seal
fitting water may be used to lubricate the
'O'ring.
10.3 To remove the seal housing
1. Remove the gland guards (21).
2. Thoroughly clean the inside and
outside of the seal area on the
rotorcase and the bores of the rotor.
3. Remove the product 'O'ring (50).
3. Use a suitably sized screwdriver or
lever to lever between the seal housing
(66) and shaft sleeve (42). This will
ease the seal housing out of the
rotorcase. Ensure care is taken not to
damage the sleeve sealing surface.
10.4 Seal housing fitting
This can be done with the rotorcase on
or off the pump.
1.
Ensure the seal housings and
seal recesses are clean.
2.
Position the seal housing (66) loosely in
the rotorcase with the flat, inside the
rotor case, aligned. Once correctly aligned
push the seal housing into the rotorcase.
Check the seal housing is below the
back face of the rotorcase.
3.
Lightly lubricate the O
’rings with water or
a suitable grease.
