Pentair FNS Plus FNSP 24 Owner's Manual page 3

THIS FILTER OPERATES UNDER HIGH PRESSURE. WHEN ANY PART OF THE CIRCULATING SYSTEM, e.g.,
CLAMP, PUMP, FILTER, VALVE(S), ETC. IS SERVICED, AIR CAN ENTER THE SYSTEM AND BECOME
PRESSURIZED. PRESSURIZED AIR CAN CAUSE THE LID TO BE BLOWN OFF WHICH CAN RESULT IN
SEVERE INJURY, DEATH, OR PROPERTY DAMAGE. TO AVOID THIS POTENTIAL HAZARD, FOLLOW THESE
INSTRUCTIONS.
1. BEFORE REPOSITIONING VALVE(S) AND BEFORE BEGINNING THE ASSEMBLY, DISASSEMBLY, OR
ADJUSTMENT OF THE CLAMP OR ANY OTHER SERVICE OF THE CIRCULATING SYSTEM: (A) TURN THE
PUMP OFF AND SHUT OFF ANY AUTOMATIC CONTROLS TO ENSURE THE SYSTEM IS NOT
INADVERTENTLY STARTED DURING THE SERVICING; (B) OPEN HIGH FLOW™ MANUAL AIR RELIEF
VALVE; (C) WAIT UNTIL ALL PRESSURE IS RELIEVED.
2. WHENEVER INSTALLING THE FILTER CLAMP FOLLOW THE FILTER CLAMP INSTALLATION
INSTRUCTIONS EXACTLY.
3. ONCE SERVICE ON THE CIRCULATING SYSTEM IS COMPLETE FOLLOW SYSTEM RESTART
INSTRUCTIONS EXACTLY.
4. MAINTAIN CIRCULATION SYSTEM PROPERLY. REPLACE WORN OR DAMAGED PARTS IMMEDIATELY,
e.g., clamp, pressure gauge, valve(s), O-rings, etc.
5. BE SURE THAT THE FILTER IS PROPERLY MOUNTED AND POSITIONED ACCORDING TO
INSTRUCTIONS PROVIDED.
B. CLAMP INSTALLATION INSTRUCTIONS.
These instructions MUST BE FOLLOWED EXACTLY to prevent the lid from blowing off during system restart or later
operation.
1. Perform the following steps before working on any part of the circulating system, e.g., clamp, pump, filter, valve(s), etc.
a. Turn the pump off and shut off any automatic controls to ensure that the system is not inadvertently started during
servicing.
b. Open the High Flow™ manual air relief valve until it snaps into the full open position (this only requires a quarter turn
counter clockwise).
c. Wait until all pressure is relieved. Never attempt to assemble, disassemble or adjust the filter clamp while there is
any pressure in the filter.
2. Be certain the O-ring is in position in the lower tank half. Press the filter lid over the lower tank half sandwiching the O-ring
in between.
3. Holding the ends of the filter clamp apart, position the center segment of the filter clamp over both upper and lower tank
flanges. Bring the ends of the filter clamp together, while inserting the T-Bolt into the trunnion; see Figure 2.
4. Using Figure 2 as a guide - place washer (large I.D.) and the tension-indicating spring on the barrel nut. Place the second
washer (small I.D.) on the T-Bolt. Hand-tighten nut. Recheck filter
clamp for proper seating on tank flanges.
5. Begin to tighten nut using a 7/8 in. wrench. Then tap around the
outside of the filter clamp with a mallet (or similar tool) to ensure
uniform loading and proper seating of the clamp. Continue tapping
and tightening until the spring coils touch each other. Do not
tighten beyond this point.
6. Follow the instructions in Section C, SYSTEM RESTART
INSTRUCTIONS, which follows.
7. The spring coils should be checked at least once per month to
ensure that they continue to touch each other, indicating that the
clamp is under sufficient tension. If coils fail to touch repeat step B.5 above.
Rev. G 6-27-03
WARNING
3
Figure 2.
P/N 190033