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Caution: The oil fill port must be sealed tightly. Or the air will be entered into pump chamber
through impeller seals.
7.3 Oil Change/Shaft Seal Housing
Warning: The oil in the shaft seal housing should be changed every 3,000hrs operating. Loosen the
oil-drain screw under the shaft seal housing, drain out the oil and then screw the oil-drain with a
gasket which is in a perfect condition. Fill in fresh oil through the oiler and the oil should be
reached to the oil level. .
Maximum level:
When the pump is warm = 1/2 of the height of the oiler.
When the pump is cold = 1/3 of the height of the oiler. Wipe off any oil residues from the
casing.
7.4 Cleaning the Fan and the Cooling Fins
Warning: The fans slits as well as the motor fins will be polluted when working in humidity
conditions. In order to ensure a sufficient air enter into motor and the pump’s casing, the fan grids
must be cleaned using a cleaning brush when polluted. Any coarse dirt must be removed from the
motor fins and the pump.
7.5 Cleaning the Pumping Chamber
Warning: Under dirty operating conditions, pump chamber and rotor will be getting polluted.
After removing the two connecting lines, the contaminants can be blown out with dry compressed
air or flushed out using a suitable solvent. Contaminants that cannot be removing completely from
the pump chamber with a wire brush, metallic sponge or scraper. Then change the oil.
Warning: During cleaning, the rotors must be turned only by hand. The loosened parts must not
remain in the pump. After cleaning, check the pump by slowly turning the rotor. The rotor should
be moved freely and without any resistance.
7.6 Disassembling and assembling procedure
7.6.1 Disassembling procedure:
7.6.1.1 Loosen screw and take down End cover B
7.6.1.2 Loosen screw (Vortex/Vortex B250-Vortex B 2000) or using hydraulic gear device (for
Vortex/Vortex B5000-9000) to take down gear.
7.6.1.3 Loosen screw and take down the gear cover, bearing, bearing seat B, piston ring and
piston ring cover.
7.6.1.4 Loosen screw and take down locating pin, and then disassembling side cover B.
7.6.1.5 Loosen screw and take down the motor, disassembling coupling.
7.6.1.6 Disassembling the locknut in the active/driven shaft.
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