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3.20.4 Front pull-out
The TG BLOC pumps also have a front
pull-out system.
To remove liquid residues or to
check the idler bearing for wear,
the pump cover can be pulled out
from the pump housing without
disconnecting suction and
discharge pipes.
See chapters 4.0 Disassembly/Assembly
and section 6.5 Weights.
3.20.5 Back pull-out
To flush the pump or to check
the sleeve bearing for wear the lantern
piece with intermediate casing, shaft and
rotor can be easily pulled out backwards
without disconnecting the suction and
discharge pipes.
See chapters 4.0 Disassembly/Assembly
and section 6.6 Weights.
3.20.6 Clearance adjustment
The TG BLOC pumps are delivered with the correct axial clearance setting. In some cases, however,
the axial clearance needs to be adjusted:
•
When uniform rotor and idler wear need to be
compensated.
•
When the flow is too low pumping low viscous
liquids and the slip has to be reduced.
•
When the liquid is more viscous than expected,
the friction inside the pump can be reduced by
increasing the axial clearance.
Proceed as follows to set the axial
clearance:
1. Disassemble motor from lantern piece
2. Loosen the tap bolts (2290a) on the
pump casing side
3. Tighten the tap bolts (2290b) on the
motor side until the pump shaft with
rotor and bearing is pushed completely
against the pump cover, tha axial
clearance "S
4. Measure the distance "A" between
coupling bush (6010) and lantern
piece flange (1400).
5. Loosen the tap bolts (2290b) and fix
the ball bearing by tightening the tap
bolts (2290a) equally thus pressing
shaft with rotor and ball bearing backwards.
6. Measure again the distance "A" between coupling bush (6010) and lantern piece flange (1400),
the difference between the measured distances is the new axial clearance "S
- If the axial clearance is too small, repeat step 5 & 6.
- If the axial clearance is too big, loosen the tap bolts (2290a) again and tighten the tap bolt
(2290b) and then repeat step 6.
44
" is then 0.
ax
Nominal axial clearance
TG BLOC pump size
15-50 to 23-65
58-80 to 86-100
0030
S
ax
2290a
A.0500.751 – IM-TGBLOC/01.00 EN (10/2020)
(S
) [mm]
ax
0.10 – 0.15
0.15 – 0.20
A
6010
2290b
1400
".
ax
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