1.
Push the spring (16) and the washer (6) into the dosing head.
CAUTION!
The piston may be damaged
–
Do not damage the sealing lips of the V-sleeve packing
(20).
2.
Push the V-sleeve packing (20) into the dosing head. The thicker
ring comes last!
3.
Align the V-type rings with the open side towards the dosing head,
as for the FOI ring (23), see Fig. 18.
4.
Pull a new O-ring (21) on to the flushing collar (4).
5.
Press a new FOI sealing ring (23) into the flushing collar (4).
Observe direction! - refer to Fig. 18.
6.
Push the flushing collar (4) into the dosing head.
7.
Place and tighten the guide ring (5) with a new guide band (24) on
the dosing head.
8.
Tighten the screws (27):
Tightening torque
5 Nm
9.
Place the dosing head flange (3) on the liquid end and tighten:
Tightening torque
7 Nm
10.
Carefully push the piston (2) into the liquid end.
P_SI_0147_SW
Fig. 18: Section through the liquid end
2
Piston
4
Flushing collar
5
Guide ring
21 O-ring
23 FOI ring
24 Guide band
1.
Place the liquid end with the discharge valve upwards on the drive
flange and secure using the retaining screws (26).
Tightening torque
7.5 Nm
CAUTION!
The piston is breakable.
–
Secure the piston to prevent it falling out.
2.
Check that the small O-ring sits on the end of the slide rod.
3.
Screw the piston (2) tightly to the slide rod.
Fitting the liquid end
Repairs
34
Содержание Sigma / 2 Basic Type SBKa
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