Klir Drop-In Fleece Filter 101: Assembly and Installation

What the Klir Does

Filter socks trap debris, but they only work if you remember to remove and clean them. A clogged sock stops water from passing through, and the trapped food and waste begins to decay and release nutrients back into your aquarium.

The Klir replaces your filter sock with an automatic fleece filter:

1. Water passes through the filter material.
2. As the material fills with waste, the water level rises.
3. When the water reaches the optical sensor, a motor advances clean filter material.
4. Water flows freely again, the level drops, and the motor shuts off.

This repeats automatically as needed. The Klir needs no extra space inside, above, behind, or next to your sump, and it requires no plumbing changes. Remove your filter sock from its holder and drop the Klir in its place.

Instructions

User guide for the Klir Di-4 and Di-7 Fleece Filter models:

Step 1: Check Sump Compatibility

Your sump should have:

• A filter sock tray that holds at least 1.5" of water above it. If water doesn’t collect above the tray, the Klir won’t operate correctly. If you don’t have a sock holder, a bracket is sold separately at CoralVue.com.
• At least 8.2" of clearance below the filter sock tray.
• An opening above the tray large enough for the Klir’s footprint.
• A sump wall no thicker than 1/2" (12.7 mm) where the magnetic sensor will mount.

Step 2: Choose the Right Number of Units

The number of Klir units depends on the total flow going into your sump, not on how many filter socks it holds.

Model | Maximum Flow

• Klir Di-4 - 750 GPH
• Klir Di-7 - 1,800 GPH

Examples:

• Example 1: Your sump holds two socks but you only move 600 GPH. One Klir is enough. Add a diverter cap (sold separately) to the open sock holder to close or reduce the bypass flow.
• Example 2: Same sump, but you move 1,000 GPH. Use two Klir filters in a master/slave setup, with both motors connected to a single controller and a single sensor.

Step 3: Check the Box Contents

Make sure you have:

• Klir filter body
• One 50-micron filter roll
• V2 controller
• Magnetic optical sensor
• Power supply
• Motor
• Fleece supply and collection spindles
• Rubber vent pipes
• Extra collars, in case your sock tray is slightly smaller or larger than the preinstalled collar

Step 4: Assemble the Filter

1. Open the filter.
2. Insert the short side of the rubber vent pipe into the holder, with the long side pointing up.

Step 5: Thread the Filter Fleece

1. Remove the cover from the unit, then remove the sidewall from the bottom chamber.
2. Insert the supply spindle (the larger of the two) into the filter roll.
3. Load the roll into the cradle so the fleece rolls over, not under.
4. Pull the fleece over the first guide roller, then under the second roller at the base of the unit.
5. Continue threading the fleece down the bottom of the chamber, then under and around the lower chamber guides.
6. Pull the fleece up the bottom chamber, then along the outside of the last two guide rollers.
7. Center the fleece on the collection spindle and tape it to the top of the spindle. Make sure the key is on the same side as the motor cradle.
8. Manually roll the fleece 3 to 5 full turns.
9. Attach the spindle to the motor, then glide the motor into its cradle.
10. Remove any excess slack by manually turning the clean roll in the opposite direction.
11. Put the cover back in place, then reinstall the bottom chamber sidewall.

Step 6: Install the Klir in Your Sump

1. Turn off your return pump so no water flows into the sump’s filtration compartment.
2. Remove your filter sock. Measure your sock tray opening and press the collar that fits it onto the throat of the Klir body for a snug, level fit.
3. Slide the Klir straight down into the sock hole until the collar lip rests flat on the tray.

Tight spaces: The Klir hinges at a 90-degree angle, which makes it easy to install in sumps with low height clearance.

Step 7: Mount the Sensor

Mount the magnetic optical sensor on the sump wall, outside the filter body, about 1.5" above the sock tray line.

• Mounted too high, water can overflow the baffle before the fleece advances.
• Mounted too low, the motor will cycle too often and use up your fleece roll quickly.

Step 8: Connect the Controller

1. Hang the controller in a dry area away from water.
2. Plug the motor cord and sensor cord into their matching ports on the controller.
3. Plug the power adapter into the controller, then into a wall outlet.
4. Arrange a drip loop for each cord connected to the controller. This keeps water from traveling along the cord to the controller or outlet.

Step 9: Start Up and Watch the First Cycle

Turn your return pump back on. When water reaches the sensor, the controller LED blinks blue and the motor advances clean fleece until the water level drops. The LED then turns solid blue. Your Klir is ready to use.

Using the V2 Controller

• Reset button: Press and hold to start the motor manually. Press once to turn the power on or off (a red LED indicates the power is off).
• Sensor points: The bottom sensor (3) is the primary trigger. The middle sensor (2) is a backup that takes over if the bottom sensor fails. The top sensor (1) is a warning that it’s time to replace the whole sensor unit.
• Motor cycle: Each cycle runs for 7 seconds, up to a maximum of 15 seconds. If the motor runs more than 21 times within half an hour, the red LED blinks and an alarm sounds.
• Motor-blocked alarm: The motor stops, the red LED blinks, and an alarm sounds. This means the motor needs to be replaced, the fleece roll is used up, or debris needs to be cleared. Press the button to silence the alarm.
• Motor failure: The solid blue LED turns off and the alarm sounds. Replace the motor.