5
D. If the ring was already locked, remove it and the fil-
ter lid assembly. Inspect and clean the O-ring and all
sealing surfaces. Relubricate the O-ring, if necessary.
NOTICE:
Lubricate the O-ring sealing area inside the
upper tank lip with silicone grease, as other lubricants
may cause the ring to swell. DO NOT lubricate the Posi-
Ring™ or the threads on tank shell as this may collect
grit and make removal difficult.
After the filter is operating, record the filter pressure
gauge reading in the owner's manual for future use.
FILTER DISASSEMBLY/
ASSEMBLY PROCEDURE
Before disassembling filter:
1. STOP PUMP.
2. OPEN air release valve and drain fitting.
3. WAIT until all pressure is released and water drained
from filter tank and system before loosening Posi-Ring™.
Disassembly:
1. Stop the pump.
2. Open air release valve on top of filter tank to release
all pressure from inside of tank.
3. Remove the drain cap and drain all water from the tank.
4. Remove filter lid assembly as follows:
a. Press the safety latch (below the ring) toward the
tank to release it (see Figure 4).
b. Hold the latch in the release position and rotate the
ring COUNTERCLOCKWISE to remove it. If the ring
is difficult to turn, tap it gently with a rubber mallet
to overcome initial resistance.
5. Inspect the O-ring for cuts, cracking, deformation or
signs of wear; replace if necessary.
NOTICE:
Do not remove the O-ring unless you need
to replace it. To remove it, hook it out of its groove with
a stiff curved piece of wire inserted through the small
access slot in the bottom of the tank lid assembly.
SAFETY LATCH
The purpose of the safety latch is to hold the Posi-Ring™
in the locked position. If the latch is damaged, replace it
as follows:
1. Press up on the small catch on the bottom of the safety
latch and press or tap the latch out of the slot in the tank.
2. Slide the new latch into position until it latches in
place.
NOTICE:
DO NOT operate the filter if the safety latch
is damaged or will not hold the Posi-Ring™ in the
locked position.
Assembly:
1. Inspect and clean the tank, ring threads and O-ring
groove. Replace damaged parts as necessary.
2. Install the filter cartridge in the tank. Push down firmly
to seal it.
NOTICE:
Lubricate the O-ring sealing area inside the
upper tank lip with silicone base grease, as other lu-
bricants may cause the ring to swell. DO NOT lubri-
cate the Posi-Ring™ or the threads on the tank shell
as this may collect grit and make removal difficult.
3. Install the O-ring in the tank lid assembly O-ring
groove. Be sure that the O-ring is clean and not
twisted.
NOTICE:
Do not remove the O-ring unless you need
to replace it.
4. Place the Posi-Ring™ squarely over the tank shell
threads and rotate it CLOCKWISE until it is securely
latched.
5. Follow instructions in the “Initial Startup” section of
this manual.
PU
SH
PU
SH
Figure 4 – Depress safety latch to unscrew the
Posi-Ring™.
