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4.6.3 Hose Installation
Never try to install a hose without the front cover in place
• Rest one end of the hose in the mouth of the inlet port (the hose should be fed into the pump
in the direction of normal operation) and rub lubricant along the outer wall of the hose, feeding
it into the pump housing as each length of hose is lubricated. Once the hose reaches the
rotor, the drive can be inched forward to feed in the remainder of the hose. Continue to
lubricate the full length of the hose as it is fed into the pump
• The hose should be inched forward until there is sufficient hose protruding from the inlet port
to be able to fit the sealing ring, with the outer edge of the sealing ring positioned 1 to 2mm
inboard of the end of the hose. If the hose passes this point the drive should be reversed
and inched back into the correct position
Figure 17
• For accurate positioning of the hose it may be possible to manually rotate the rotor by
isolating power first then removing the cooling fan cover and turning the fan by hand. This is
not always possible with the larger pumps
• Fit the sealing ring, long tapered edge first, over the hose
Note: The sealing ring of the VF10 - 40 is tapered on one edge only and is fitted toward the
pump! The VF50 - 80 is tapered on both edges. The end of the sealing ring should be 1 to 2mm
inboard of the end of the hose (see fig 17)
• Place the sealing ring over the hose and then the port flange, hand tighten the four bolts into
the pump housing:-
