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®
FLEXFLO M4
14.0 Pump Maintenance
14.5 Tube Replacement
Insert suction fitting into pump head. Remove your fingers from
pump head. Start pump by pressing START button. Grab hold of
Tube Installation Tool and use it to leverage tubing into pump head.
Introduce tubing into pump head while the rotor is rotating. Avoid
using fingers to guide the tubing. Stop pump at anytime by
pressing STOP button. Start pump by pressing START button.
Continue to follow rotation of rotor while directing tube into pump
head. At this point, you may need to pull Tube Installation Tool to
stretch tubing into position. Let rotor spin a few rotations while
pulling Installation tool so fitting can be properly installed.
1
2
3
PULL
4
!
CAUTION
Prior to service, pump clean water through the pump and suction / discharge line to remove
chemical.
Always wear protective clothing, face shield, safety glasses and gloves when working on
or near your metering pump. Additional precautions should be taken depending on
solution being pumped. Refer to MSDS precautions from your solution supplier.
!
CAUTION
Use provided Tube Installation Tool to leverage tubing into pump head, NOT YOUR
FINGERS.
!
CAUTION
Use extreme caution when replacing pump tube. Be careful of your fingers and DO NOT
place fingers near rollers.
!
CAUTION
Continue to pull Tube Installation Tool to allow enough room to
slide discharge fitting into pump head tongue and groove. Once
discharge fitting is secured in pump head, stop pump by pressing
STOP button. Replace pump head cover. Pump will ask you if the
tube was replaced, select yes. Pump will then ask if you would like
to reset REV counter, select yes. REV count will display for 5
seconds before resetting to zero.
Pump Head
Spacer, Rear
Rotor
Spacer, Front
Tubing Assembly
Pump Head Cover
Thumb
Screws
Tube Nut
Tube Installation Tool
90002-278
14.3
Removing Pump Head and Tubing
The pump requires very little maintenance. However, the pump and all accessories should be
checked weekly. This is especially important when pumping aggressive chemicals.
Remove the
Pump Head Cover
by unscrewing the four
Thumb Screws.
Pull out
the
Pump
Head Cover.
The pump will detect that the
Pump Head Cover
is removed and enter MAINTENANCE
MODE.
Rotor will rotate at a maximum of 6 RPM for your safety.
Pull out the suction side of
Tubing Assembly
.
Press the START
button. While the rotor is rotating, pull out the old
Tube Assembly
.
TIP! Let the pump do the work for you. Just guide the tubing out between the two rollers
located on the
Rotor
.
Press the STOP button at any time to stop the pump.
Pull out the suction line adapter from the Pump Head. Pull out the
Tubing Assembly
as the
Rotor
rotates around.
Stop the pump by pressing the STOP button.
Thoroughly clean the
Pump Head
and
Rotor
. The
Rotor
can be removed by pulling it straight
out. After the cleaning process, push the
Rotor
back on the shaft. See the drawing above for
proper assembly. Be sure the front and rear rotor spacers are in place. IMPORTANT!
Rotor
direction; the word “FRONT” on
Rotor
must face the front of the pump.
Locate your new tubing and Tube Installation Tool. See the next page to install new
Tube
Assembly
into
Pump Head
.
14.4
Pump Head Exploded View
®
FLEXFLO M4
14.0 Pump Maintenance
Page 52
