SPX Cooling Technologies TG MAG15-50 Front pull-out, Back pull-out, Clearance adjustment

3.21.3.4Filter or suction strainer

Any filters or suction strainers at the bottom of the suction line must be cleaned regularly.

Note! A clogged filter in the suction piping may result in insufficient suction pressure at the inlet. Clogged filter in the discharge line may result in higher discharge pressure.

3.21.3.5Anti-friction bearings

TG MAG pumps are equipped with 2RS ball bearings which are grease packed for life. They do not require periodical greasing. The bearings should be replaced after 25.000 operating hours.

3.21.3.6Sleeve bearings

We recommend checking the pump regularly for wear on the gear wheels and sleeve bearings to avoid excessive wear of other parts.

•A quick check can be done by using the front pull-out and back pull-out system. See table for maximum allowable radial clearance of the sleeve bearings.

•For replacement of the sleeve bearings contact your distributor.

TG MAG pump size	Maximum allowed
	radial clearances
15-50 to 23-65	0.15 mm
58-80 to 86-100	0.25 mm
185-125	0.30 mm

3.21.4 Front pull-out

The TG-pumps 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 6.6 Weights.

3.21.5 Back pull-out

To flush the pump or to check the rotor shaft bearing arrangement the bearing bracket with outer magnetic rotor and the rotor shaft/ bearing assembly can be pulled out backwards without disconnecting the suction and discharge pipes.

When a spacer coupling is used, the driving mechanism need not be moved.

See chapters 4.0 Disassembly/Assembly and section 6.6

Weights. for the mass (weight) of the components.

3.21.6 Clearance adjustment

The TG 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 by re-setting the axial clearance.

•When pumping low viscous liquids the slip can be reduced by decreasing the axial clearance.

•When the liquid is more viscous than expected, the friction inside the pump can be reduced by increasing the axial clearance.

46 A.0500.551 – IM-TGMAG/02.00 EN (02/2008)