23
Instruction Manual
4.4 CARTRIDGE VALVE AND O-RING
REPLACEMENT
ALWAYS WEAR PROTECTIVE
CLOTHING, FACE SHIELD, SAFETY
GLASSES AND GLOVES WHEN WORKING ON OR PERFORMING
ANY MAINTENANCE OR REPLACEMENT ON YOUR PUMP. SEE
SDS INFORMATION FROM SOLUTION SUPPLIER FOR
ADDITIONAL PRECAUTIONS.
Refer to the LMI
®
Metering Pump Price List for
the proper Spare Parts Kit or RPM PRO PAC™
kit number or contact your local LMI
®
stocking
distributor.
1. Carefully depressurize and disconnect the
discharge line (see Section 4.1 or 4.2 in this
manual).
2. Place the Foot Valve into a container of water
or other neutralizing solution. Turn the pump on
to flush the head assembly. Once the pump has
been flushed, lift the Foot Valve out and continue
to pump to let air into the pump head until pump
is purged of water or neutralizing solution.
Note:
If the liquid cannot be pumped due to
LIQUIFRAM™ rupture, carefully disconnect the
suction and discharge tubing using protective
clothing, gloves and face shield. Remove the
four screws and washers from the head and
immerse the head in water or other neutralizing
solution.
Spare part replacement kits include specific
instructions for valve replacement. Please follow
the instructions included with the replacement kit.
3. Carefully disconnect one tubing connection and
fitting at a time, then remove and replace the
worn valve and O-rings. If necessary, carefully
loosen stuck valves by prying side to side using
a small screwdriver through the center hole of
the valve.
Note:
Before disassembling the check valves, note
the orientation of the valve.
4. Install new check valves in each location.
Ensure that the cartridges are oriented
correctly.
SECTION 4 - MAINTENANCE
