Sta-Rite Nautilus FNS Installation Manual

Nautilus® FNS & Nautilus® NS Filters

Replacement Kit Installation Instructions

Clamp Kit Installation

Filter operates under high pressure. When any part of the circulating system (e.g., Lock Ring, Pump, Fliter, Valves, etc.) is serviced, air can enter the system and become pressurized. Pressurized air can cause the ﬁ lter lid to separate which can result in severe injury, death, or property damage. To avoid this potential hazard, follow these instructions.

Follow these instructions and your ﬁ lter installation and user’s guide exactly. If you do not have a ﬁ lter installation and user’s guide, STOP. Do not install clamp. Call (800) 831-7133 for a free installation and user’s guide.

1. Remove contents of kit and check against parts list to be sure all components are present.

2. Backwash ﬁ lter according to instructions under “Filter Backwash Procedure” in your ﬁ lter Installation, Operation & Service Manual. Stop after instruction #8. Do not precoat with new D.E.

3. Be sure pump is turned off and all pressure has been released from system

4. Remove the ﬁ lter drain plug and drain all water from tank.

5. Loosen the clamp nuts alternately until one is removed. Lift clamp assembly off of ﬁ lter.

6. Remove second nut from clamp assembly. If replacing entire band assembly, (Kit P/N 181011), discard the old band. The following instructions apply to installation of the new band assembly. The threaded end of the T-bolt should protrude through the trunnion, see Figure 1 below.

Spring

Trunnion

Clamp

Barrel

Nut

T-Bolt

7. Place one of the washers (with the small hole- 5/16” inside diameter) on the threaded end of the T-bolt and slide washer down bolt until it is against the trunnion. See Figure 1 above.

8. Place one of the washers (with the large hole-7/16” inside diameter for NS and 17/32” inside diameter for FNS) over the shank of the brass nut. Place one of the springs over the shank of the brass nut so that the washer with the large hole is captured between the end of the spring and the head of the brass nut. See Figure 2 on page 2.

Washer

(small)

Washer

(large)

Figure 1.

Technical Support

Sanford, North Carolina (8 A.M. to 5 P.M. - ET) Moorpark, California (8 A.M. to 5 P.M. - PT)

Phone: (800) 831-7133 Fax: (800) 284-4151

Web sites: www.pentairpool.com - www.staritepool.com

P/N 195627 Rev. C 6/9/11

Clamp Kit Installation, (Continued).

*195627*

Do not over tighten the clamp band. Tightening the clamp band beyond recommended procedures may damage the clamp band and cause unexpected failure, sudden release of pressure and injury or damage. Clamp hardware and ﬁ lter surface could have sharp edges which can cause bodily injury if improperly handled. Please use caution when performing the following procedures.

9. Thread shank of nut onto T-bolt 2 turns maximum.

10. Pre- assemble second washer with large hole, nut and spring for opposite side of band clamp assembly.

11. Insure ﬂ anges on tank halves are free of dirt and or D.E.

12. Place clamp around tank ﬂ ange making sure threaded end of T -bolt protrudes through trunnion as shown in Figure 1.

13. Place remaining washer (with the small hole- 5/16” inside diameter) on the threaded end of the T-bolt and slide washer down bolt until it is against the trunnion. See Figure 1.

14. Thread shank of nut onto T-bolt - 2 turns minimum. If end of T-bolt does not protrude through trunnion far enough to engage shank of nut, make sure that ﬁ rst spring assembly is tight against trunnion per Figure 3, and band is tight against tank.

15. Tighten nuts evenly and alternately until spring coils touch each other. Tap clamp around tank with rubber hammer to assist seating of clamp.

16. Use only those components supplied in this kit or Pentair Water Pool and Spa replacement parts when dealing with the bands and spring tensioning devices.

17. Follow instructions under “Initial Start-UP” section of your ﬁ lter Installation, Operation & Service Manual to return your ﬁ lter to operation.

Spring

Shank

1620 Hawkins Ave., Sanford, NC 27330 (919) 566-8000 10951 West Los Angeles Ave., Moorpark, CA 93021 (805) 553-5000

Nautilus® , Because reliability matters most®, and Pentair Pool Products® are trademarks and/or registered trademarks of Pentair Water Pool and Spa, Inc. and/or its afﬁ liated companies in the United States and/or other countries. Unless noted, names and brands of others that may be used in this document are not used to indicate an afﬁ liation or endorsement between the proprietors of these names and brands and Pentair Water Pool and Spa, Inc. Those names and brands may be the trademarks or registered trademarks of those parties or others.

P/N 195627 Rev. C 6/9/11

Washer

Nut

Figure 2.

PULL BAND HALVES APART UNTIL NO GAP EXISTS AT “A” OR BETWEEN SPRING AND WASHERS.

Figure 3.