Nova-Tech LMI Series AA-B-C-E-J-P Metering Pumps - Manual (Page 36)

36
CAUTION
!
9.3 Cartridge Valves, Seal Rings/Valve Balls and
Injection Check Valve Spring Replacement

ALWAYS wear protective clothing, face shield, safety glasses
and gloves when working on or performing any maintenance
or replacement on your pump. See MSDS information from
solution supplier for additional precautions.
1. 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.
2. Carefully depressurize and disconnect the discharge line
(see Section 9.1 in this manual). 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.
Once the pump has been flushed, lift the Foot Valve out and
continue to let air into the pump head until pump is purged
of water or neutralizing solution.
If the liquid cannot be pumped due to Liquifram ™ rupture,
with protective clothing, gloves and face shield, carefully
disconnect the tubing and four screws to remove the head.
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.
IMPORTANT:Beforedisassemblingthecheckvalves,note
theorientationofthevalve.
3. Carefully disconnect one tubing connection and fitting at a
time, then remove and replace the worn valve.
If necessary, carefully loosen stuck valves by prying side
to side using a small screwdriver through the center hole of
the valve.
4. Install new check valves in each location.
CAUTION
!