MODEL YB8 MAINTENANCE
April 1999/Manning Environmental Inc.
Page C-3
Lubrication The peristaltic pump requires no regular lubrication. If chattering starts to occur in the
pump rollers, a very small amount of very lightweight o il may be applied. I f t he
chattering does not stop, replacement may be necessary.
Pump Tubing
See Below.
Pump Case Manning recommends occasional cleaning to remove particulates that if caught between
the wall and the tube, can cause increased wear of the pump tubing.
Pump Rollers Manning recommends occasional cleaning to ensure smooth rolling and less wear o f
pump tubing.
Replacement of Pump Tubing
WARNING: Always disconnect the power to the sampler before opening the pump to replace the
tubing. F ailure to do so may lead to serious injury.
The peristaltic pump used o n t he Manning Environmental Inc. Model YB8 has been designed t o facilitate
the changing of pump tubing. The unit is mounted in a vertical position. The unit also employs a clear
plastic face plate to allow the user not only to see how the tubing should lie within the pump but also to aid
in tubing alignment and to allow the user to visually verify that the pump is operating correctly. Perform the
following steps to change the pump tubing:
WARNING: The orientation of the intake and discharge hoses must not change when replacing the
tubing. I f the orientation changes, the unit will operate in reverse of it s proper operating
procedure. T his means it will t ry t o draw a sample out o f t he sample container instead of
out of the source liquid.
1) Verify t here is no power being applied t o t he unit. The unit has an integral safety kill switch which
is intended to prevent powered rotation to the pump should the clear plastic face plate be
removed. However, power should always be turned off to the unit as an added measure of safety.
2) Remove the 3 thumb screws which hold down the clear
plastic face plate. Lift off the plate.
3) Remove the tubing from the liquid connectors which are
attached to the liquid sensor (continuity type). For
ultrasonic type liquid sensors, disconnect the tubing from
the liquid connectors and then slide the hinged lid of the
top of the liquid sensor and then pull the tubing out of the
liquid sensor. Then remove the tubing from around the
rollers. There are no designated ends on the tubing so the
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