Watson-Marlow 620R - Manual (Page 4)

Watson-Marlow Bredel E-Manuals
http://www.watson-marlow.co.uk/pdfs-global/m-620r-gb-01.htm[02/02/2012 14:33:33]
Open the guard to its full extent. This creates the maximum clearance between the
tube ports and guard to remove the tubing.
Engaging/disengaging the rollers
The extent of travel of the roller release levers is indicated below. Do not try and
force the levers beyond their normal extent of travel as this will damage the rotor.
To engage the rollers snap the roller release levers counter clockwise making sure
that the rollers locked out against the tubing. To disengage the rollers, snap the
release levers clockwise to their disengaged position. For high pressure tubing
elements or four roller pumpheads, the 5mm Allen key can be used to aid leverage
when engaging/disengaging the rollers with the release levers.
Make sure that fingers are clear of the front face of the rotor hub
when using the roller release levers.
Pre-load checks
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 that the guard seal is clean, replacing it if necessary.
Ensure that the rollers are engaged and locked out against the tubing
Close the guard and push it against the track until the latch engages.
Connect suitable pipe work to the pumphead using the appropriate connectors for
the tube element.
Continuous tubing clamp location in 620R pumpheads
Select the appropriate tube clamp set for the tubing size to be used.
Locate the two "U"-shaped track clamp halves into the pumphead ports (The "U"-
shape ensures correct loading)
Locate the corresponding guard clamp halves which have raised "T" locating
sections, into the slots on the inner guard face above and below the guard hinge.
Push and slide into their locked position.
Closing the guard will align the two halves of the clamp around the tubing.
620RE and 620RE4 tube element loading
620RE element pumpheads are factory set to accept Watson-Marlow LoadSure tube
elements. Pumping performance will be adversely affected if LoadSure elements are
not used.
Disengage rollers
Locate one of the "D"-shaped flanges into the lower port. (The "D" flange ensures
that the element can only be loaded correctly).
Wrap the tube element around the disengaged rollers of the rotor.
Locate the second "D"-shaped flange into the upper port.
Ensure the flat face of each "D" flange sits flush to the flange sealing face of the
track.
Engage rollers
Close the guard and push it against the track until the latch engages.
Tube element loading