Flotronic F 500 series, Installation, Operation And Maintenance Manual

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F Series
Good Food Style Pump
Section 13 - F Series Good Food Style Pump
All previous maintenance and other instructions up to and including Section 10 given earlier, apply to the
F Series Good Food pumps. In addition, the following procedures apply.
Access to valves and seats is carried out by first disconnecting process pipe-work and undoing the
top and bottom handles which screw through the cross bar across the top and bottom of the pump.
Simply take hold of the handle and turn anti-clockwise to undo. Once loose, the manifold can be
removed to one side of the pump.
Note: On pumps with 14” diameter diaphragms it may be necessary to remove the blanking nut and cap
on one end of the manifold to allow it to pass through between the body chambers on removal.
Once the manifold is free of the pump, simply twist the seat ring anti clockwise to unlock it with its two
‘O’ rings from the manifold retaining lugs.
In circumstances of slight expansion, balls may be eased out using a blunt tool.
New balls and seats should be fitted when necessary and to reassemble, the reverse procedure is
adopted, making sure the chambers are clean and free from obstruction inside the pump manifolds.
The pump can be reassembled using horizontal centre line parts in the manner described in the F Series
710 Style pump, Section 12.
F Series Good Food Style pumps use the split PTFE bearing type of divider seal.
The bearings are of PTFE in a ‘C’ Section which can be prised off the wall of the pump body using a screw
driver or similar object, and they are simply and easily replaced by hand.
Note:
A suitable food-quality anti-seize compound should be applied to the tie rod thread to aid tightening and
removal of the large nut. (Example ‘Never Seez’ from Bostik)