Fastprime™ Valve O-Ring Replacement - LMI ROYTRONIC EXCEL AD Series Instruction Manual

SECTION 4 - MAINTENANCE
4.6 FASTPRIME™ VALVE O-RING
REPLACEMENT
GLASSES AND GLOVES
MAINTENANCE OR REPLACEMENT ON YOUR PUMP.
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
distributor.
1. Be sure the Injection Check Valve is properly
installed and is operating. If a shut off valve
has been installed downstream of the Injection
Valve, it should be closed.
FASTPRIME™ VALVE AND RUNS BACK TO YOUR SOLUTION
DRUM OR TANK.
2. Turn the FASTPRIME™ Knob one-and-a-half
turns counter-clockwise. This will depressurize
the head. Keep valve open. Carefully remove
the return line by gently pulling tubing and
moving it from side to side to gradually back
tubing off of the barbed fitting.
Note gap between Flange
and Retaining Nut.
INCORRECT
25
ALWAYS WEAR PROTECTIVE
CLOTHING, FACE SHIELD, SAFETY
WHEN PERFORMING
stocking
®
BE SURE YOUR RELIEF TUBING
IS CONNECTED TO
Instruction Manual
3. Hold return line tubing upright until solution
drains back into solution drum or tank.
4. Using a 3/4" (or 19mm) socket or wrench
remove Retaining Nut, and pull out the entire
ANY
FASTPRIME™ Valve assembly. Remove and
replace the two small O-rings.
5. Reinsert the FASTPRIME™ Valve assembly
and retighten the Retaining Nut. Then turn
the FASTPRIME™ Knob clockwise to tighten
knob to closed position. To avoid damaging
the parts, it is important that the flange on the
FASTPRIME™ Valve is flush with the Retaining
Nut prior to reassembly.
6. Recut 1 to 2 inches off the tip of the return line
and ensure the end is squared. Press the return
YOUR
line tubing on completely past the barbs.
Figure 17a
No gap between Flange
and Retaining Nut.
CORRECT