Pre-load checks
l Before loading tubing, ensure that all rollers rotate freely, that the tube ports and location grooves
are clean and that if in use, the controlled waste pipe work is free of any obstructions.
Closing the pumphead guard and start-up
Ensure no debris, loose fastenings or other foreign objects are in
pumphead before start-up. Failure to do so may result in an explosion
hazard.
l Ensure that the guard seal is clean, replacing it if necessary.
l Ensure that the rollers are engaged and locked out against the tubing
l Ensure the latch mechanisum is free of any obstructions.
l Close the guard and push it against the track until the latch engages.
l Connect suitable pipe work to the pumphead using the appropriate connectors.
14 620REA and 620RE4A LoadSure tube element loading
l 620REA element pumpheads are factory set to accept Watson-Marlow LoadSure tube elements.
Pumping performance will be adversely affected if LoadSure elements are not used
l Disengage rollers
l Locate one of the “D”-shaped flanges into the lower port. (The “D” flange ensures that the element
can only be loaded correctly)
l Wrap the tube element around the disengaged rollers of the rotor.
l Locate the second “D”-shaped flange into the upper port
l Ensure the flat face of each “D” flange sits flush to the flange sealing face of the track
l Engage rollers
l Close the guard and push it against the track until the latch engages.
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