Filter
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6
Quad D.E.
®
Filter Installation and User’s Guide
Clamp Installation
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 4; on page 7, SYSTEM RESTART INSTRUCTIONS.
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 5 above.
Figure 2.