Section 4 – Peristaltic Dosing Pumps
23
Section 4. – Peristaltic Dosing Pumps
4.1
Lubricating the Pump Tubing
The
easyCHEM 770
is shipped with the correct lubrication on the peristaltic pump tubing. This
lubrication should be re-applied every year. Suitable Silicon lubricant is available from TPS in a
3mL syringe (part no 130103).
The
easyCHEM 770
provides a reminder to lubricate the pump tubes every year…
Lube Pump Tubes
See Handbook
To lubricate the pump tubing…
1. Remove the pump tubing, as per the details in section 3, below.
2. Smear a small quantity of Silicon grease all around the tube. A thin film is all that is required.
DO NOT
use petroleum based oil or lubricants, as these will cause the Santoprene rubber to
perish. Use only Silicon based lubricant.
3. To reset the ‘
Lube Pump Tubes
’ message for next year, press
to enter the Technical
Menu area, press the
key until ‘
→
Lube Pump OK
’ is selected, and press
.
4.2
Replacing the Pump Tubing
Replace the Pump Tubing if it gets worn, begins to leak, or pumping volume is reduced. The Pump
Tubing may be replaced every year as a precautionary measure.
To remove the old Pump Tube…
2
3
4
1
IMPORTANT
Place the pump suction
tubing into a bucket of
fresh water. Use the
pump priming function
(section 2.7) to prime
the pump(s) with water.
This ensures that there
are no dangerous
chemicals in the tubes
when they are
disconnected.
Switch off the power and
disconnect the power
cord from the mains
power outlet.
Remove the Input and
Output tubing from the
compression fittings.
This is simply a reversal
of the procedure
detailed in section 2.4.
Remove the see-
through protector plate
on the front of the pump.
5
Turn the roller holder so that the rollers are in a horizontal line. Pull the left
hand side compression fitting from its seat. Begin turning the roller holder
clockwise, so that the roller holder acts as a lever which pulls the pump tube
out as it turns. After approximately 3/4 of a turn, the right hand side
compression fitting can be pulled out.
The old pump tube has now been removed.
