Download ROTAN PUMP - Apy Systems

8. If the packing rings are difficult to move into position, they can be rolled with a pipe or similar
item.
Never strike a gasket, as the fibers in the material will be destroyed and the sealing property
will be significantly worsened.
9. Lubricate the individual rings with a little oil to facilitate installation.
10. Turn the ring openings so that the two rings lying alongside one another are diametrically
offset.
11. Finally, tighten the packing gland gently by hand, and restart the pump.
Ball bearings
The pump is fitted with a ball bearing – pos. CU – at the pump’s free shaft end.
Some pumps are fitted with two ball bearings – pos. CU + BC – see the position numbers on the
spare part drawings.
MD pumps are fitted with two ball bearings – pos. NB – on pumps with a free shaft end.
All bearings are model 63 deep-groove ball bearings, fitted with two rubber seal rings, no seal
rings or one single seal ring.
17.2.1 Lubricating ball bearings
Ball bearings must be lubricated to ensure explosion protection.
ATEX
Ball bearings must be lubricated with heat-resistant grease when pumping liquids over
100°C/212°F – to guarantee explosion protection.
ATEX
Ball bearings must be lubricated with heat-resistant grease when pumping liquids over
100°C/212°F.
Ball bearings with two seal rings do not require re-lubrication, as they are filled with a suitable
amount of grease in the factory.
DESMI Inc.
2551 Eltham Avenue – Suite G
Norfolk, Virginia 23513, USA
Tel.: +1 757 857 7041
Fax: +1 757 857 6989
E-mail: [email protected]
Web: www.desmiusa.com
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