Watson Marlow Pumps 505LA Bedienungsanleitung Seite 27

505L: Using two independent tubes
This option may be used to allow the 505L to function as a twin-channel pumphead.
Lift the two levers at either side of the pumphead and remove the track.
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Remove the mushroom peg on both sides of the pump by turning it counter-clockwise through one
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quarter turn and withdrawing it.
Mark a length of 145mm on two lengths of tube up to a bore size of 8.0mm; or mark a length of
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150mm on two lengths of 9.6mm bore tubing.
Tube clamps are marked with the nominal bore for their intended tubing. Secure the tubes to the
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suction side of the pumphead with a correctly-sized clamp, aligning one of the marks on each tube
with the inner face of the clamp. Secure the clamp by inserting the fixing bayonet into the socket
previously used for the mushroom peg and rotating it clockwise one-quarter turn.
Stretch the tubes slightly and secure them with the second clamp in the same way, with the second
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pair of marks aligned with the inside of the second clamp. You may find it convenient to insert the
tubes into the arches of the second clamp before securing the clamp.
Replace the track and secure it by closing the two levers.
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Ensure the braided earth lead is securely connected to both the track and pumphead body.
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Note: After fitting new lengths of Marprene tubing, run the pump for about half an hour and then re-
tension the tubing, making sure that the nominal lengths above are restored. If tubing lengths greater
than those given are used, the tubing may move about within the pumphead and damage will occur.
PB0379:m-505atex-en-04 27