Hardware features
66
Note: With the auxiliary control cable connected and the pump set to auto
mode, manual mode will not be available.
Warning!
If the auxiliary cable is disconnected when the power is still supplied the pump
will briefly rotate. This may deposit any dispersant present in the pipes.
Pipe connection
The pumphead [2] is uni-directional and travels anti-clockwise. The pipe must be con-
nected so that the flow travels from the right (the dispersant source) to the left (the dis-
persant inlet).
Also refer to the pump manual for complete information on installing the pipe into the
pumphead.
1.
Connect the pipe from the dispersant source [3] to the upper externally regulated
dispersant inlet [4]. Pipe lengths up to 15 m can be used.
2.
Place a retaining clip [6] over the connected pipe at the dispersant inlet and com-
press using pliers to provide a secure connection.
3. Open the top of the pumphead.
4. Set the pipe clamps to the correct pipe size.
Using the adjustment knobs on either side of the pumphead, set the pipe clamps
to 4.8mm as shown on the pumphead scale (4.8mm is the inner diameter of the
supplied Tygon sample pipes).
5. Slide the pipe into the open pumphead over the rollers. Make sure the pipe is not
twisted or stretched.
6. The head can be loosened or tightened around the pipes using the 2 adjustment
knobs on the sides of the pumphead. Make sure that the head height is tight
enough so that the pipe cannot move forward or backward but loose enough
that flow is not restricted.
7. Close the top of the pumphead.
Control
Once setup the pump will always start in Automatic mode, with the the pump auto-
matically detected by the Mastersizer system. Commands to activate the pump are
provided either by the Sample dispersion–Accessory SOP window or the Accessory
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