FILTERSCAN Reference Guide Version 2.4 The information contained herein is proprietary and is not to be used for purposes other than as an aid in the operation and/or maintenance of the of the product described herein and is not to be released or reproduced by anyone without the written permission of CleanAlert, LLC. Due to CleanAlert's constant strive for product improvement, minor discrepancies between the actual product, text and illustrations may exist. All information contained herein is based on the latest specifications at the time of publication and is subject to change without notice. FILTERSCAN is a registered trademark of CleanAlert, LLC. Contents Introduction ... 1 1 1 1 1 1 2
............................... In The Box Tools Required
............. Safety .. Application .............................................................................. FCC Compliance .... IC Compliance .... Monitor Installation ..... 2 Receiver Installation ..... 5 Operation ..... 7 7 7 7 7 7 8 8 System Monitoring .... Alarm Modes ..... Clogged Air Filter ...... Low battery ..... Malfunction ..... Calibrating When Installing a New Air Filter .. Automatic Adjustment ... Specifications .. 8 Warranty .. 9 Wireless Option ..... 9 9 Transmitter . 9 Receiver Learn Mode .... 9 Low Battery Indicator ... 10 Identification Address ... 10 Revision History .... 10 Appendix ...... 11 Glossary ...... 11 Indicators .... 11 Battery Replacement ........ 11 Alarm Indications ... 12 Disclaimer ... 12 Introduction In The Box Tools Required Safety Application FCC Compliance Congratulations on your purchase of the CleanAlert FILTERSCAN Air Filter Clog Detection System. The CleanAlert FILTERSCAN intended for continuous and automatic monitoring of the clogging of an air filter installed into a household or commercial forced air heating, air conditioning, or heat pump system. Please read all instructions carefully to insure years of trouble-free operation. We're sure you enjoy outstanding performance when the FILTERSCAN is installed by a qualified HVAC technician and properly operated. is Installation and Operation Guide 1. FILTERSCAN Monitor 2. 4 "AA" Batteries (B models only) 3. 4. Template for attaching the FILTERSCAN 5. Mounting Screws 6. Packaging / box 7. External wall adapter power supply Optional (B models only) 8. FILTERSCAN 9. 2 AAA Batteries (Receiver only) Receiver Optional (W models only) Monitor to an air duct Formatted: Indent: Left: 1.94", Hanging:
0.28", Outline numbered + Level: 2 +
Numbering Style: 1, 2, 3, + Start at: 2 +
Alignment: Left + Aligned at: 0.25" + Tab after: 0.5" + Indent at: 0.5", Tab stops: Not at 0.5"
1. Drill 2. 7/64 drill bit 3. 3/8 drill bit 4. Phillips Screwdriver 5. drill bit (if Model CA-4DP Differential Pressure kit ordered) Formatted: Indent: Left: 1.94", Hanging:
0.28", Outline numbered + Level: 2 +
Numbering Style: 1, 2, 3, + Start at: 2 +
Alignment: Left + Aligned at: 0.25" + Tab after: 0.5" + Indent at: 0.5", Tab stops: Not at 0.5"
WARNING! READ AND UNDERSTAND ALL INSTRUCTIONS. Failure to follow all instructions may result in electrical shock and or serious personal injury. FILTERSCAN designed to monitor the amount of dirt building on an air filter and alert the user when the amount of clogging reaches a pre-determined threshold. is an air filter clogging detection system. It has been The FILTERSCAN differential pressure drop from 0.10wg to 4.0wg and with single or multi-
speed blowers, but not compatible with VAV (Variable Air Volume) systems. Monitor is compatible with most air filters ranging in If the wireless option has been installed, the FILTERSCAN transmit alarm conditions to a remote Receiver. The Receiver may be located up to 100 feet from the Monitor depending upon line-of-sight and obstacles located between the Monitor and Receiver. Monitor will This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation. 1 IC Compliance NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and the receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. FCC ID Number: AUPFS-242 This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numrique de la classe B est conforme la norme NMB-003 du Canada. This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil est conforme Industrie Canada exempts de licence RSS norme. Opration est soumis aux deux conditions suivantes: (1) cet appareil ne peut pas causer de brouillage et (2) cet appareil doit accepter toute interfrence, y compris les interfrences pouvant causer un fonctionnement intempestif du dispositif. Model: FS-242-BW Modle: FS-242-BW Model: FS-242-CW Modle: FS-242-CW IC Certification/Registration Number IC: 10341A-FS242 Numro de Certification / d'enregistrement les IC: 10341A-FS242 Monitor Installation WARNING!
Air Filter Clogging Monitor and Although the CleanAlert FILTERSCAN Alarm, Model FS-242, may be installed upstream, downstream, or differentially across the air filter (using optional tubing kit Model CA-4DP), the best results will be found when installing downstream of the air filter
(that is, between the air filter and the system blower fan, usually located at the return duct of the HVAC system). Ensure that the HVAC system blower motor/fan is turned OFF until told to otherwise!
1. The FILTERSCAN Monitor is to be attached to the external wall of the air duct, either upstream or downstream from the air filter to be 2 Formatted: Indent: Left: 1.97", Outline numbered + Level: 2 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 2.08" + Tab after: 2.33" + Indent at:
2.33"
monitored. NOTE: The minimum distance for positioning the FILTERSCAN Monitor from the air filter is six (6) inches. 2. Locate an area on the return duct, preferably downstream from the air filter (that is, between the air filter and the system blower), large enough to place the Monitor template on a flat surface and where there are NO obstacles inside the duct. There should be sufficient clearance from the surrounding walls and from any components of the air supply system. 3. Place the Monitor template at the location found in the previous step, such that "TOP" is facing upward. NOTE: The FILTERSCAN Monitor front panel must be clearly visible when installed. 4. Using the template, drill one large hole, (3/8") for the sensor and four small holes (7/64") for the mounting screws. 5. Attach the FILTERSCAN Monitor by aligning its sensor tube with the larger hole and secure the Housing using the mounting screws supplied. The sensor tube does not extend into the duct. 6. Set the Upstream/Downstream switch so that it matches the Monitor position with respect to the air filter (that is, FILTERSCAN OFF for upstream mounting or ON for downstream or differential mounting). The switch can be accessed by removing the front cover of the Monitor. Formatted: Indent: Left: 1.97", Outline numbered + Level: 2 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 2.08" + Tab after: 2.33" + Indent at:
2.33"
3 Power Receptacle 7. Apply power:
a. Models FS-242-B and FS-242-BW - Insert the wall mount power adapter into the FILTERSCAN batteries and replace the Monitor front cover. See Appendix for battery replacement. power receptacle, or install 4 AA b. Models FS-242-C and FS-242-CW These models should be installed by a qualified electrician, and are powered from the HVAC systems auxiliary 24 VAC/DC power supply. A typical installation will have that power run through rigid conduit to the FILTERSCAN
. c. The STATUS LED should come on green momentarily then turn and remain red. This indicates that the unit has not yet been calibrated to the air filter and HVAC system upon which it is installed. Formatted: Indent: Left: 1.97", Outline numbered + Level: 2 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 2.08" + Tab after: 2.33" + Indent at:
2.33"
4 Formatted: Indent: Left: 1.97", Outline numbered + Level: 2 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 2.08" + Tab after: 2.33" + Indent at:
2.33"
8. Wait for approximately 15 seconds (warm up and stabilization time). 9. 10. Depress the ZERO/CLEAN button ONCE. The STATUS LED will Install a clean, new air filter into the HVAC system. records blink yellow for several seconds while the FILTERSCAN the systems FAN OFF condition, then turn to blinking green. This indicates proper operation and that you are ready to move to next step. If the unit detects the zero air flow is out of limits, the STATUS LED will blink red. In this case, check to see that the HVAC system blower fan is OFF and no conditions exist during this part of the calibration that would cause air to be moving within the HVAC ducts, such as opening and closing of doors or windows. If no such condition exists, contact the company that you purchased the FILTERSCAN from for repair information. 11. Adjust the thermostat temperature adjustment to either increase or decrease the room temperature by at least four degrees, enough to signal the HVAC system to turn on heating or cooling. 12. Once the HVAC system blower fan turns on, wait one minute for the blower fan to stabilize. 13. Depress the ZERO/CLEAN button once. The STATUS LED should turn from blinking green to blinking yellow for several minutes. This indicates that the unit is calibrating itself to the air filter and HVAC system into which it is installed. Once calibration is completed, the STATUS LED will blink green a few times then turn off. 14. Return the thermostat to normal operating temperature. This concludes the installation of the FILTERSCAN Monitor. 15. The SERVICE FILTER control is a fine tuning adjustment that has been calibrated to the mid-range, Recommended Setting at the factory. This control allows the user to change the point at which the clog alarm will be triggered. Turning the SERVICE FILTER adjustment clockwise will cause the FILTERSCAN level of filter clogging. Turning the SERVICE FILTER adjustment counter-clockwise will cause the FILTERSCAN higher level of filter clogging. to issue an alarm at a lower to issue an alarm at a Receiver Installation Wireless Option Only 1. Remove the front cover of the Receiver by depressing the latch at the top of the Receiver housing, rotating the front cover downward, and lifting the front cover out of the housing. Formatted: Indent: Left: 1.97", Numbered +
Level: 1 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 0.03" +
Tab after: 0.28" + Indent at: 0.28", Tab stops:
Not at 0.28"
5 2. Install two AAA batteries. Formatted: Indent: Left: 1.97", Numbered +
Level: 1 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 0.03" +
Tab after: 0.28" + Indent at: 0.28", Tab stops:
Not at 0.28"
3. Your FILTERSCAN Monitor and Receiver have been paired
(matched) at the time of manufacturing and should require no further attention. 4. To test the pairing of the Monitor and Receiver:
a. Monitor and Receiver should be turned on and in close proximity to each other. b. Test the Receiver by inserting a paperclip through the small hole in the front cover of the Receiver until the click of a switch is felt, then immediately pressing the SEND button on the Monitor. This transmits a signal to the Receiver, which turns on the Red LED and Beeper. Formatted: Indent: Left: 1.97", Numbered +
Level: 1 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 0.03" +
Tab after: 0.28" + Indent at: 0.28", Tab stops:
Not at 0.28"
5. To insure proper operation when Receiver is placed in a desired remote location, retest the Receiver as described above. This remote procedure may require two people. Formatted: Indent: Left: 1.97", Numbered +
Level: 1 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 0.03" +
Tab after: 0.28" + Indent at: 0.28", Tab stops:
0.25", List tab + Not at 0.28"
6 Formatted: Indent: Left: 1.97", Numbered +
Level: 1 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 0.03" +
Tab after: 0.28" + Indent at: 0.28", Tab stops:
Not at 0.28"
Operation System Monitoring Alarm Modes NOTE: Although the wireless transmission range is up to 100 feet, it is greatest with no obstructions between the Monitor (transmitter) and Receiver. Any obstructions, such as walls, floors, and ceilings will reduce the range of transmission, and relocation of the Receiver may be required. Retest with each location to ensure proper operation 6. Mount the Receiver vertically by using the screws or adhesive strip supplied. Install the front cover by placing the bottom flanges into the housing and rotating the cover upward until the top latches into the housing. 7. The STATUS LED will blink green approximately once per minute (called a heartbeat) to indicate that the unit is functioning properly. Usually the FILTERSCAN will be in the standby mode, conserving power. It wakes up periodically to monitor air filter condition, battery level, and system operation. If no alarm conditions are detected, the FILTERSCAN goes back to sleep after several minutes of monitoring. NOTE: Should there be a power failure the FILTERSCAN will save all parameters such as the clean air filter calibration and the current state of the air filter. When power is restored, the FILTERSCAN Monitor will continue operation with no user action required. The same applies when replacing depleted batteries. The FILTERSCAN provides both audible and or visual alarms indicating a clogged air filter, a low battery, or a system malfunction. There is also a wireless option which allows remote monitoring of system conditions. NOTE: The HVAC system blower fan must be running when the FILTERSCAN Monitor attempts to check air filter condition. Since the FILTERSCAN Monitor checks the air filter condition periodically, it may take several days to detect, trigger, and alarm a clogged filter condition. Clogged Air Filter When the FILTERSCAN detects a clogged air filter, an alarm condition Low Battery Malfunction is triggered. The red STATUS LED will illuminate, blinking five times approximately every ten minutes until the alarm condition is reset. There will also be an audio alert which corresponds to the visual alarm indication. The clogged filter alarm is reset by installing a new, clean air filter, depressing the CALIBRATE button, and then following the instructions in the section "Calibrating When Installing a New Air Filter". NOTE: A new air filter should always be installed whenever the CALIBRATE operation is performed. When the FILTERSCAN detects a low battery condition, an Alarm condition is triggered. The STATUS LED will blink yellow approximately once per minute to indicate a low battery in the Monitor. Replacing the Monitor batteries (see the Appendix for instructions) will reset the alarm condition. When the FILTERSCAN detects an internal malfunction, an alarm condition is triggered. The red STATUS LED will illuminate continuously until the malfunction is corrected. In the unlikely event this should occur, remove power from the FILTERSCAN by removing the batteries, 7 Formatted: Indent: Left: 1.97", Numbered +
Level: 1 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 0.25" +
Tab after: 0.5" + Indent at: 0.5", Tab stops:
Not at 0.5"
unplugging the optional AC Adapter, or in the case of conduit-powered models (C) contacting your HVAC system electrician to have the power to the Monitor cut. Wait for a minute and restore power. If your FILTERSCAN unit is operating with both AC Adapter and batteries installed, both will need to be removed in order to reset the malfunction. If this does not reset the malfunction alarm, contact the company that you purchased the FILTERSCAN from for repair information. Calibrating When Installing a New Air Filter system must be calibrated. Calibration establishes the clogged air filter Whenever a new air filter is installed, the FILTERSCAN clog detector detection threshold based upon the condition recorded for a new air filter. When a new air filter is installed, its condition is recorded and saved in nonvolatile memory. Insure that the HVAC system is OFF at the thermostat. 1. 2. Remove the dirty air filter from the HVAC system. 3. 4. Make sure the FILTERSCAN Monitor power is ON via either AC Install a new, clean air filter into the HVAC system. Adapter or Battery installation, making sure the low battery indication is not being displayed. 5. Depress the ZERO/CLEAN button on the FILTERSCAN Monitor. 6. Wait for the red STATUS LED to illuminate. 7. Depress the ZERO/CLEAN button again. 8. Wait several seconds for the STATUS LED to change from blinking yellow to blinking green. 9. Turn the HVAC system ON at the system thermostat. 10. Set the thermostat temperature adjustment to either increase or decrease the room temperature by four degrees, which should be enough to signal the HVAC system to turn heating or cooling on. 11. Wait one minute for the HVAC system blower fan to turn on and stabilize. 12. Depress the ZERO/CLEAN button again. 13. Wait several minutes for the STATUS LED to turn from blinking yellow to blinking green. During this time, the unit is recording the condition of a clean air filter. 14. Wait several seconds for the blinking green STATUS LED to turn OFF. 15. Return the thermostat to normal operating temperature. Your FILTERSCAN Monitor is now calibrated to the type of air filter you have installed. Depending on the air filter type and manufacturing tolerances, you may need to calibrate the FILTERSCAN air filter clogging detector each time a new air filter is installed. Automatic Adjustment ATTENTION - HVAC systems with two-speed blowers! Typical HVAC systems will have different blower speeds for Heat and A/C. The FILTERSCAN blower speeds. Monitor automatically adapts to the changes in HVAC Specifications Pressure Differential Range Clog Filter Trigger Point Temperature Range 0.1 to 4.0 in H2O 1.5 to 2 times initial differential pressure (at the recommended setting on the SERVICE FILTER control) 32o to +122o F (0o to +50o C) Operating 8 Humidity Power Requirements (-B & -BW) Batteries, Monitor (-B & -BW) Batteries, Receiver Battery Life Power Requirements (-C & -CW)
-40o to +257o F (-40o to + 125o C) Storage 80% RH, non-condensing 5.5 VDC at 25 mA Status LED on, 3 mA Transmitting, 60 uA Standby
(4) AA 2400 mAH
(2) AAA 1100 mAH Approximately 1 year 24 VAC/DC at 25 mA Status LED on, 3 mA Transmitting, 60 uA Standby Does not extend into duct Red STATUS LED & 2 KHz Beeper alternating ON & OFF five times Yellow STATUS LED blinking approximately once per minute Red STATUS LED continuously illuminated 5 holes, 4 @ 7/64 and 1 @ 3/8"
6 x 4.625 x 1.5 2.75 x 3.75 x 1.0 Insertion Depth into Duct Clogged Air Filter Alarm Low Battery Alarm Malfunction Alarm Mounting Monitor Dimensions Receiver Dimensions Wireless Frequency Transmission Range FCC Identification #
Industry Canada #
Warranty One (1) year limited warranty Please refer to http://www.cleanalert.com/termsofsale.html for full warranty 418 MHz Up to 100 feet, depending upon line-of-sight and obstacles AUPFS-242 10341A-FS242 Wireless Option Transmitter Receiver Learn Mode text. In a wireless system, the FILTERSCAN Monitor contains a wireless transmitter, operating at a frequency of 418 MHz, which is activated whenever there is an alarm condition. Transmissions are very short in duration and intermittent until the alarm condition is reset. Each FILTERSCAN Monitor is randomly assigned one of over 16 million identification addresses at the time of manufacture. This is important in systems where neighbors have installed similar wireless systems. The FILTERSCAN Receiver contains a wireless receiver, also operating at a frequency of 418 MHz, which is activated intermittently, listening for an alarm condition. The Receiver listens for the FILTERSCAN transmitter's identification address and responds only to transmissions originating from your systems Monitor. This prevents inadvertent activation when neighboring buildings also have FILTERSCAN systems in operation. Each FILTERSCAN Receiver has the ability to learn and store a FILTERSCAN Monitor's identification address. Your FILTERSCAN system, consisting of a Monitor and a Receiver, has had both components identification addresses matched at the factory. In the event that a replacement Receiver is introduced into your system, that Receiver must learn the system Monitors identification address. In order to accomplish 9 Formatted: Indent: Left: 1.97", Numbered +
Level: 1 + Numbering Style: 1, 2, 3, + Start at: 1 + Alignment: Left + Aligned at: 2.22" +
Tab after: 2.47" + Indent at: 2.47", Tab stops:
Not at 2.47"
Low Battery Indicator this, both the Receiver and Monitor must be located close to each other. The steps are:
1. Remove the Receiver front cover. 2. Depress the LEARN button located next to the batteries. 3. Within 5 seconds, depress the SEND button at the Monitor. After several seconds, the Monitor will beep once. Then, after another several seconds, the monitor will beep twice. 4. To confirm proper pairing of the Receiver to the Monitor, a. After mounting the Monitor and Receiver, depress the LISTEN pushbutton and insert a straightened paper clip through the small hole located near the bottom of the Receiver cover. b. Within 5 seconds, depress the SEND pushbutton on the Monitor. This may require a second person. c. The Red indicator should illuminate and the Beeper should sound for approximately five seconds, indicating that the Receiver is mounted within range of the Monitor. NOTE: The best transmission range is obtained when a direct line-of-sight between the Monitor and Receiver exists. Any obstructions, such as floors and walls, will decrease the operating range of the system, and relocation of the Receiver may be required. Receiver: When the FILTERSCAN Receiver detects a low battery condition, the Receiver's yellow STATUS LED will blink approximately once per minute. Monitor: When the FILTERSCAN Receiver detects a low battery condition at the Monitor, the Receiver's yellow STATUS LED will blink three times every minute. Identification Address Creating an identification address is performed by manually depressing the SEND button on the Monitor. Wait about ten seconds until the first beep. Depress the Create Address button on the Monitor. The green LED will start flashing. After about one second, depress the Create Address button again. The green LED will turn off. All of these steps must be completed before the second set of two beeps. NOTE: The Create Address button is accessible internally in the Monitor and intended only to be used by factory technicians. Revision History Rev. #
DRAFT Version 1.1 Version 2.0 Version 2.1 Version 2.2 Version 2.3 Version 2.4 Effective Summary:
2/2/12 5/25/12 6/4/12 Initial draft for review and validation. Initial release for review. Initial printing release. Added Wireless Installation Section and Power failure statement in the System Monitoring section. Revised the Indicator section. Added Copyright notice. Revised Figures & battery specification. 6/6/12 6/12/12 Updated per comments, mostly grammar. 6/13/12 Added Differential Pressure Mounting kit and Tools Required section. 10 Appendix Glossary Dirty Air Filter ............... An air filter which has been in use and has collected some amount of dirt or dust particles that discolor the filter fibers or element but do not substantially affect the air flow through it. Clogged Air Filter ......... An air filter which has collected a sufficient amount of dirt or dust particles to not only discolor the filter fibers or element but decrease the air flow through the filter as well. The FILTERSCAN typically identifies a filter as clogged when the differential pressure within an HVAC system increases to 1.5 to 2 times the initial differential pressure identified when the unit was calibrated with a clean filter. The sensor voltage detection and signal processing portion of the system, which may contain an optional wireless transmitter. The optional portion of the system containing a wireless receiver of data and indicates various alarm conditions. Monitor ......................... Receiver ....................... Address ........................ One of 16 million randomly assigned identification numbers of each Indicators monitor. Green STATUS LED...... The blinking Green STATUS LED at the FILTERSCAN Monitor or Receiver indicates normal operation. Yellow STATUS LED..... The blinking Yellow STATUS LED at the FILTERSCAN Monitor indicates a process is occurring and can also indicate a low battery condition at the Monitor or Receiver. Red STATUS LED ........ Beeper .......................... Battery Replacement The Red STATUS LED at the FILTERSCAN Monitor and Receiver is an alarm indicator which blinks whenever an alarm condition occurs. The audible beeper at the FILTERSCAN Monitor and Receiver is an alarm indicator which beeps whenever certain alarm conditions occurs. Access ......................... Remove the front cover from the FILTERSCAN Monitor or Receiver housing. Remove the batteries. Installation ................... Insert four (4) AA batteries in the battery holder of the FILTERSCAN Monitor, or insert two (2) AAA batteries in the battery holder of the FILTERSCAN Receiver, and replace the front cover. CleanAlert recommends using DURACELL COPPERTOP batteries. 11 Alarm Indications Monitor/Transmitter Alarm Indications Alarm Condition Normal Operation Clogged Filter Low Battery Sensor Failure Alarm Indication STATUS LED flashes green every minute. STATUS LED flashes red five times every ten minutes. Beeper sounds with LED flash. STATUS LED flashes yellow every minute. STATUS LED continuously on red. Receiver Alarm Indications Alarm Condition Normal Operation Clogged Filter Receiver Low Battery Transmitter Low Battery Sensor Failure Alarm Indication STATUS LED flashes green every minute. STATUS LED flashes red five times every ten minutes. Beeper sounds with LED flash. Supersedes the Heartbeat indication. STATUS LED flashes yellow every minute. STATUS LED flashes yellow three times every minute. Supersedes the Heartbeat indication. STATUS LED continuously on red. Clear Alarm Procedure None Replace Filter and Recalibrate Replace Batteries Contact the company that you purchased the FILTERSCAN from for repair information Clear Alarm Procedure None Replace Filter and Recalibrate Replace Receiver Batteries Replace Transmitter Batteries Contact the company that you purchased the FILTERSCAN from for repair information Disclaimer The data contained herein are furnished for information only and are believed to be reliable. We cannot assume responsibility for the results obtained by others over whose methods we have no control. It is the user's responsibility to determine suitability for the user's purpose and to adopt such precautions as may be advisable for the protection of property and of persons. In light of the foregoing, the warranty of CleanAlert, LLC on this product shall be exclusive and in lieu of any other warranties, including, without limitation, any warranty of fitness for a particular purpose or warranty of merchantability or any other warranties which may be claimed to arise by operation of law, custom, trade usage, or course of dealing between CleanAlert, LLC and the customer. In no event shall CleanAlert, LLC be liable, whether in contract or tort (including negligence) for damages in excess of the purchase price of the product(s), or for any indirect, incidental, special or consequential damages of any kind, or loss of revenue or profits, or other financial loss arising out of or in connection with the ability or inability to use the product(s), to the full extent these damages may be disclaimed by law. The discussion herein of various applications is not to be interpreted as representation that they are free from domination of patents owned by others or as a license under any CleanAlert, LLC patents that may cover such applications. We recommend that each prospective user test his proposed application before use, using this data as a guide. CleanAlert products are manufactured under one or more of the following U.S. Patents: 7,178,410; 7,490,512; and others pending. Specifications are subject to change without notice. 2012 CleanAlert, LLC 12