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Pump head tube size adjustment
Pump Module User Guide
Problem
The liquid flow is
constricted or liquid
fails to pump or drain
properly.
The liquid- level is no
longer accurate for a
reservoir on a Weigh
Station.
The pump head clamps can be adjusted to accommodate different tubing sizes.
A properly adjusted clamp opening secures the tubing in the pump head while
allowing an efficient flow of liquids. The preceding troubleshooting table
describes the potential problems that can result from incorrectly adjusted
clamps.
Figure Open pump head (side view) showing (1) open clamp and (2) clamp dial
1
2
To change the tube clamp adjustment:
1
Lift the flip- top cover on the pump head so that it is open fully.
2
On each side of the pump head, turn the dial to open the clamp fully.
3
Ensure that the tubing gently arches over the rollers and is located in the
center of the track (V- groove) on each side of the pump head.
4
Set the tube clamps to the correct size, making sure to align the scale on
both sides of the pump head.
Potential cause
The tubing is
deteriorated or the
pump head clamp is
too tight for the
tube size.
The Weigh Station
requires
recalibration.
Pump Module User Guide
Maintenance and troubleshooting
Solution
Inspect the tubing for wear
and leaks. Replace the
tubing as necessary.
If necessary adjust the
pump head clamp, see
"Pump head tube size
adjustment" on page
29.
IMPORTANT
When the
Pump Module is not in use,
lift the flip- top cover on
each pump head to prevent
flattening the tubing and to
help maximize the tubing
life.
Calibrate the Weigh Station.
For details, see the user
documentation for your
automation software.
29
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