Watson-Marlow SP Series - Manual (Page 20)

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7.5.6 Removal of flange brackets
Remove the flange bracket (SP/25-SP/100) or flange bracket and insert (SP/10, SP/15 and
SP/20) on both suction and discharge port.
7.5.7 Removal of the hose
The hose can be removed without removing the pump cover.
Simply remove the hose by jogging the drive motor.
7.5.8 Cleaning of pump casing
Flush out casing cavity to remove any contaminants. If necessary remove the pump cover to
clean casing completely (but isolate the pump from the electrical supply first).
WARNING
Never remove the pump cover whilst the hose is in place.
The front covers of the series SP/25 to SP/100 should not be removed whilst
the hose is in place. This can cause a deformation of the pump casing and a
non straight tension of the bolts. After fitting the cover and starting up the
pump, the bolts can be extremely forced and break.
When the pump cover was removed for cleaning purposes, refit it before installing the
hose Check the cover O-ring for damage and replace if necessary. Make sure that the bolts
are refitted and that they are tightened in the correct order, diagonally opposite each other,
see “Specifications”: ‘’Torques’’, § 10.1.6.
7.5.9 Tighten drain plug (not applicable for SP/10, SP/15 and SP/20)
Before the hose can be loaded the drain plug has to be mounted. Make sure that the drain
plug is mounted in such a way that no leakage of lubricant can occur.
7.5.10 Preparation of pump hose
Clean the outside of the pump hose and thoroughly lubricate the external surface of the hose
with the Bredel hose lubricant.
7.5.11 Insertion of the hose
• Switch on the electrical supply again and insert the hose into the upper port.
• Jog the drive motor to feed the hose through the housing.
• If necessary, help by pressing the hose firmly into the port opening.
• Stop the drive when the hose is equally extended from the ports.
7.5.12 Place hose clamps
Place on both the suction and discharge port the bushes, all hose clamps (do not tighten
yet!), the brackets, the flanges and the inserts.
7.6 Hose connection
Note: Always start hose connection at one port and finalize these actions completely. Then
repeat these actions for the other port. In this instruction we start from the suction port.