craftsman door openers manual
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craftsman door openers manualYou can unsubscribe at any time.You can unsubscribe at any time.Download the FREE Craftsman Smart Garage Door Opener app Craftsman Smart Garage Door Opene. If you do not find what you’re looking for on this page, please call our customer service team for prompt answers to your questio. With quality at the forefront of every ne. That's why we offer choices for every line of work.Follow us as we journey across America introducing new products and opening ne. You can unsubscribe at any time.You can unsubscribe at any time. Periodic checks of the op ener are required to ensure safe operation. DO NOT install on a one-piece door. Guardar este manual cerca de la puerta de la cochera. Se deben realizar revi siones periodicas del abridor de puertas para asegurar su operacion segura. Los dispositivos y funciones automaticas deben usarse UNICAMENTE con puertas seccionales.Installation hardware The door should stay at the point under proper sp ring tension.Ensure the end segment has trolley stop bolt facin g up. Make sure the rails are securely joined together as shown. 3. Slide the trolley onto the rail from the header segment. Make sure the arrow is poi nting towards the door as sho wn in Fig.1. 4. Connect the rail assembly to the rail bracket on the opener. To Assemble the Header Section of Rail Follow steps shown in Fig. 2: 1. Remove the “trolley shaft and cable ” from the chain carton and lay it beside the rail assembly. Rotate the pulley to ensure it spins smoothly. Refer to Fig.3 to connect the trolle y shaft to the trolley. Slide both the trolley shaft and trolley towa rds each other. A “click” will be heard when they are connected. To Link Cable with Chain Refer to Fig.4. Place the chain ca rton beside the rail, hold the “chain to cable connector” and pull about 8” (20cm) of chain from the box. Thread the chain to cable connector ont o the trolley shaft so that they are loosely linked together. Fig.1 Fig.2 Fig.4 Fig.3 ! CAUTION - DO NOT connect power until instructe d.http://acspquebec.com/userfiles/e36-manual-transmission-gasket.xml
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- To prevent INJURY, keep hands and fingers away from joints and possible sharp e dges. - Wear gloves when installing chain an d cable. Rail Bracket 1 3 4 2 Trolley Shaft Trolley Shaft Trolley Cable Eyelet Loosely link together Trolley Shaft Chain-to-Cable Connector Chain When connecting the rails ens ure they are securely connected as sho wn above. Rail — Header Segment Rail — Middle Segments (tapered) x 3 Rail — End Segment (tapered) with Trolley Stop Bolt DOOR If the supplied chain a nd rails are not long enough for your instal la tion, you may purcha se an 8-f oot or 10-foot Chain Drive Extension Kit. To purchase a kit, visit a Craftsman outl et,call 1-888-331-4569,or go online to www.craftsman.com Place this segment in the approxim ate location on the sprocket as shown in Fig.1. 3. When the chain is aligned properly around the spro cket, pull the chain-to-cable connect or towards the trolley shaft. Compare with the illustration below. 3. Tighten the flange nut on trolley shaft against the chain-to- cable connector. When the chain and cable are tightened around the rail and sprocket on the opener, che ck and make sure t he chain is properly aligned and not twisted. Attach t he sprocket cover to the opener as shown in Fig.3. Notice During operat ion, it is normal for the chai n to appear loose when the door is closed. If the chain return s to the position as shown below when the door is opened, the chain is adju sted properly. DO NOT re-tighten the chain. When performing maintenance, alwa ys PULL the emergency release to DISCONNE CT the door from opene r before adjusting the chain. Installing Cable and Chain. WARNING To prevent SERIOUS INJURY: - DO NOT connect power until instructe d. - Keep hands and fingers clear from sprocket during operation. - Wear gloves when installing ch ain and cable. - Keep hands and fingers away from joints and possibl e sharp edges.Extend the line onto the header wall above the door spring. 2.http://dfwsedan.com/nbloom/fckuploads/e36-manual-transmission-fluid-leak.xml Open the door to the highest poi nt of travel. Mark a line on the header wall 2“ (5cm) above the high est point of travel. Note: DO NOT install the header bracket over drywall. In some installations, it may be ne cessary to install a 2 x4 across two wall studs to create a suitable locatio n for the header bracket. If installing into masonry, use concrete anchors (n ot provided). Wall-Mounting As shown in Fig.2, place the header bracket on the vertical centerline in direction shown. Alternative Ceiling-Mounting Ceiling-mounting is suggested ONLY when clearance is minimal. Extend the vertical centerline onto the ceilin g as shown in Fig.3. center the header bracket on the vertical mark, no more than 6” (15cm) from the header wall. Mark and drill h oles to fasten the header bracket securely to a structural support. WARNING To prevent SERIOUS INJURY: - DO NOT connect power until instructe d. - The header bracket MUST be SE CURELY fastened to the st ructural support on the mounting wall or ceiling, otherwise the door may not reverse when re quired. DO NOT install the header bracket over drywall. - Concrete anchors MUST be used when mounting th e header bracket into masonry. - NEVER try to loosen, move or adjust garage door springs, cables, pulleys, brackets, or hardware. - Contact a qualified garage door service technician if your door binds, sticks or is unbal anced. An unbal- anced door might not reverse when required.CAUTION To prevent SERIOUS INJURY: - DO NOT connect power until instructe d. - REINFORCEMENT is recommend ed for fiberglass, alum inum or lightweight steel garage doors BEFO RE installing the door bracket. To mount the Door Bracket Note: Some door reinforcement kits may provide direct attachment of the door arm to t he reinforcement bracket. Note: DO NOT use Self-Threading Scre ws on a w ood door. Mounting Opener to Ceiling.Secure with a overhand knot. Fig. 1 Fig. 2 ! WARNING To prevent SERIOUS INJURY or DEATH from a falling garage d oor: - In case of power failure or door obstru ction, PULL EMERGENCY HANDLE to release do or from opener. - When emergency release is in the rel eased position, the door ca n be operated manually. - To reconnect, flip the lever on the trolley towards opene r, ba ck to connect position, it will reconnect automatically upon pressing wall panel o r remote control. - DO NOT use emergency handle to pull the door open or closed. An Emergency release knob set too low may get caught by the vehicle and cause damage to the opener. Measure from the floor to the top of your vehicle and set the emergency release knob abov e this measurement. 1 0 0 W M A X Pleas e read and understand the w iring instructions before connecting wires. 1. Remove the pre-cut skin on the open end of wire from accessories. Wires MUST NO T be frayed. Each pair of terminals MUST be co nnected with one white wire a nd one striped wire (non -polarized) from the SAME accessory as shown in Fig.2. 5. Check for proper con nection by gently pulling on the wire. The wire should not come out of the terminal. Be careful not to damage the wires while securin g the staples. ! WARNING To prevent SERIOUS INJURY or DEATH from elect rocution: - Power MUST NOT be conne cted until instructed. - NO exposed part of the wire should be visibl e outside of the terminal for proper co nnection.When properl y connected and aligned, the emitter photo eye emits an invisible infra red light beam while the sensor photo eye monitors that beam. If the beam is obstructed during door-closing, the entrapment protection will be triggered and the door will stop and reverse to the open position. The courtesy light will flash for 30 seconds indicating an obstruction. Installing The Photo Eye Safety System Wall-mounting 1. Place the photo eyes facing ea ch other on each sid e of the garage door.The push button is a wired, illuminated door control placed inside you r garage. To install the Push Button: 1. Inside your garage, install push button within sight of the door at a minimum height of 5 feet (1.5m) off the ground. Ensure it is installed out of the reach of children a nd free from the moving parts of the door and hard ware. 2. Securely fasten it to a solid surface with 1” screws. To prevent SERIOUS INJURY or DEATH from elect rocution: - Power MUST NOT be conne cted until instructed. To prevent SERIOUS INJURY or DEATH from using the push button and a clo sing door: - Install the push button within sig ht of the door at a minimum height of 5 feet (1.5m) above the floor. Make sure it is out of the reach of ch ildren and moving parts of door and hardware. - NEVER permit children to access the push button or remote controls. - Operate the door ONLY when it is adj usted properly with no obstructions pres ent and is in clear sight. - ALWAYS keep a moving door in sight until it’s completely closed. - NEVER cross the path of a moving door. Push Button Min. 5 feet (1.5m) above floor From Push Button Connecting Push Button. See Accessories in Repair Parts section of this manual. The red photo eye will not light until it is aligned with the green eye. 2. When the photo eye system is proper ly aligned the green photo eye (emitter) will emit a steady green light and the red photo eye (sensor) will emit a steady red light. 3. If either of the photo eye lights are unsteady, flash or dim, check for an obstruction and carefully adjust the position of the photo eyes until they give a steady gr een light a nd steady red light. Note: The path of the inv isible light beam MUST NOT be obstructed. No part of the garage door or any hardware should interfere or bloc k either sensor. ! Aligning the Photo Eye Safety System. WARNING To prevent SERIOUS INJURY or DE ATH from electrocution or fire: - Power MUST be DISCONNECTED B EFORE proceeding with permanent wi ring procedure s. - Garage door opener in stallation and wiring M UST be in compliance with all local electrical and buildi ng codes. Make sure the opener is ALWAYS grounded. - NEVER use an extension cord, 2-wire adapter or modify the power plug in any way to make it fit the outlet. Ordinary Pow er Connection WARNING To prevent SERIOUS INJURY or DEATH from a clo sing garage door: - The photo eye safety system MUST be installed BEFORE conne cting power. - The photo eye safety system MUST be properly con nected and aligned BEFORE operating the opener. NOTICE: The opener will not close until the photo eyes are in stalled. Photo eyes are required by federal law to be installed on all openers. To Connect Power Plug the opener into a ground ed outlet ONLY. If there is no grounded outlet present, call a qualified e lectrician to replace the outlet. Use of a surge protector is highly recommended page 4. Permanent Wiring (If Required by Local Code) 1. Remove the enclosure by removing the 6 screws located on the sides and rear of the open er. 2. Cut the two cable pressure connectors connecting line (black) and neutral (white) wire from the power cord. 3. Remove the grounding screw connectin g the green wire. 4. Remove the power cord. 5. Group ne utral (white) wire s from power source with 2 white wires from light cable, and logi c board, and yello w wire from motor, inside the opener. Connect them with a wire nut. 6. Group line (black) wires from power so urce with another black wires from logic bo ard inside the opener. Conne ct them with a wire nut. 7. Secure the ground (green or b are) wire from the powe r source with a grounding screw. 8. Reinstall the enclosure. 9. Turn on powe r supply. If the wiring is properly connected, a “click” should be heard and the light will illuminate (if a bulb is installed). If there is no response from the opener, che ck power source and wiring. BEFORE making any adjustment s, operate the door by using the large push button or remote. Ru n the opener through a complete cycl e. If the door opens and close s completely without unintended reversing upon closing — NO adj ustment is necessary. If the door does not open or close at de sired positions, pro ceed with the instructions below to adjust the travel limits. Use a “flat head” screwdriver to make adju stments. One full turn of the screw is about 2” (5cm) of actual travel. NOTE: The opener m otor includes an aut omatic thermal protection system which will shut down the motor in an overheat situation. The thermal protector will reset itself once the motor cools down. Opening and closing the opener multiple times (in a short period of time) may cause the mo tor to overheat and shut down. If this happens, wait about 15 minutes for the motor to cool and retry operation. Setting OPEN (UP) Travel Limit 1. CLOSE the garage do or by using either the remote or large push button. 2. Adjust the OPEN limit screw. 3. OPEN garage door and check for prope r adjustment. 4. Repeat steps 1-3 until t he door opens to the desired position. When the door is in the open position, make sure there is enough clearance for your vehi cle(s), and there is a minimum 2“ (5cm) gap betwee n trolley and stop bolt. 5. Perform Safety Reverse Test on page 18. If the door does not open pa st 5 feet (1.5m), follow Force Adjustment on page 17 to adju st the open force. Setting CLOSE (DOWN) Trav el Limit 1. OPEN the garage door by using either the remote or large push button. 2. Adjust the CLOSE limit screw. 3. CLOSE the garage door and ch eck for proper adjustment. 4. Repeat steps 1-3 until door cl oses to the desired position. 5. Perform Safety Reverse Test on page 18. T ravel Limit Adjustment. If the door reverses unintentionally during closing, check below symptoms: 1. The photo eye system may be improperly connected, misaligned or obstructed The courtesy light will flash continuously for 30 seconds. Refer to Troubleshooting on P.22. 2. Binding door — disconnect the door from the opener by using the emergency release handle. Open and close the door manually and check the following steps. 2.1 If the door is balanced, refer to Force Adjustment on Page17 to adjust Close force. 2.2 If the door is unbalanced, binding or jammed, call a trained service person to adjust the door.The force adjustments re gulate the amount of force required to open or close the d oor. 2. Force adjustment is applied only to compensate fo r the minor resistance ca used by weather or other mean s. ?? Note: Force is preset at level 6 for both open and close adjustments. Weather conditions may also affect the operation of the door requiring further adjustment s as needed. ?? Note: If the close force is set too light the opener will reverse the door during closing. If the open force is set too light the opener will stop the door during o pening. ?? Note: There are 12 levels for open and clo se force settings. When either the maximum or minimum level is reached, the light will flash 6 times. ?? Never adjust the force setting by more than 1 level (1 press) at a time. Setting Force Setting Close Force 1. If the door completes a full close cycle without reversing, decrease (-) the close force by 1 level at a time until the door reverses. Setting Open Force 1. If the door completes a full open cycle without stopping, decrease (-) the amount of force by 1 level until the door stops during the op ening. The close force is now properly adjusted. 2. During the “door-open” cycle the opener will stop i f the force required to open the door i s exceeded. Force Adjustment ! WARNING To prevent SERIOUS INJURY or DEATH from improper fo rce adjustment: - DO NOT adju st force to comp ensate for bin ding or stick ing of the gar age door. Call a qualified garage door service tech nician to make necessary adjustments in ca se of binding. - DO NOT increase the force beyond minimum force require d for closing the door. For safe operation, the force setting s hould always be set at the MI NIMUM FORCE required to run the door. If the door still does not reverse on the object, decrease the close force (see Force Adjustment on page 17) an d repeat th e test. If the opener still fails the safety reverse test, call a qualified technician for door adjustment. Testing the Photo Eye Safety System 1. Open the door by using the large push button or re mote 2. Make sure both photo eyes steadily emit the green and red indicator lights. (If not, chec k alignment) 3. Place an obj ect under the door about 8” (20cm) high by 12” (30cm) wide (the open er carton can be used), 4. The red indicator light on the senso r eye should be dimmed. 5. Keep the door in sight and use the large push button or remote to try to close the door. 6. The door should NOT move more than 1” (2.5cm) an d the courtesy light should flash for 30 seconds. Final Adjustments and T esting.NEVER cross t he path of a moving door. To reduce risk of fire, explosion or electric sho ck: - DO NOT short circuit, recharge, disse mble or heat the battery. - Replace with 23AE 12 volt batteries ONLY. Dispose of batteries properly. Visor Clip Holster Signal and Battery Indicator 23AE 12 Volt Alkaline Battery To Program Remote(s): 1. See Fig.2 to add a remote. Press the “LEARN” button on the rear control panel of the opener. Retry programming the remote by repeating the steps above. Removing all Remo tes: To remove all remotes from memory, press an d hold the “LEARN” button for 5 seconds. T he courtesy light will flash 7 times indicating all remote s have been removed from memory. To replace the battery, remove the battery cover from the remote as shown in Fig 4. Repla ce with a 23AE 12 volt alkaline battery with polarity shown in Fig.4. Fig.1 Fig.2 Fig.4 This device complies FCC rules for HOME OR OFFICE USE. 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. x2 Fig.3 LEARN 30 seconds NO ONE should cross the path of a moving door. To reduce risk of fire, explosion or electric sho ck: - DO NOT short circuit, recharge, disa ssemble or heat battery. - Replace with 1.5 volt AAA batteries ONLY. Dispose of batteries prop erly. To Add Personal Codes: 1. Press the “LEARN” button on the rear control panel, “OK” LED will glow and beep. If the code is entered incorre ctly, correction can be made by pressing “ENTER” to re set and re-enter cod e. When dark, “ENTER” may be presse d in advance to turn on back light. Mounting the Key less Entry: Keyless entry may be se cured on door jamb face outside your garage. Locate keyless entry within sight of door at minimum height of 5 feet (1.5m), ensure it is away from reach of childre n and moving parts of door and hardwar e. Test the re ception of the keyless entry before mounting. Ch ange location for better reception if necessary. Use the mounting holes on the keyless entry as template to mark position on the mounting surface. To attach to a wooden su rface use the screws provided. In case of a drywall surface, drill holes and use drywall anchors pr ovided. Replacing Keyless Entry Battery: When the battery of keyless entry is low, dimmed ill umination is observed. To replace battery, remove the battery cover by loosening the screws underneath, an d replace the battery with two1.5 volt AAA batteries.WARNING To prevent SERIOUS INJURY or DEATH: - READ AND FOLLOW ALL INSTRUCTIONS AND WARNINGS IN THE OWNER’S MANUAL AND LABELS - Keep remote and battery out of reach of childre n. - NEVER permit children to access the wall panel or remotes. - Operate the door ONLY when it is properly adju ste d, and there are no obstructions and is in clea r sight. - ALWAYS keep a moving door in sight until completely closed.To Re-connect Trolley Pull the knob toward the opener so that the lever will flip up to the CONNECT position. Activation 22 Conduct safety reverse test after ANY adjustment. The courtesy light flashes 5 times and the Opener does not start Opener motor overh eat, please wait about 15 minutes and retry. The opener does not close the doo r and the green LED on the photo eyes flash es The photo eye safety system is misalign ed or obstructed, refer to page14 for proper alignme nt. The opener is working pro perly but the courtesy light does not turn on Replace light bulb (A19 incande scent Max.100W). The courtesy light does not turn off Defe ctive logic board. Schedule Maintenance Once a month Door balance test, refer to page 4. Safety reverse test, refer to page 18. Twice a year Check chain tensi on ( refer to page 6 for adjustment if necessary ). Once a year - Limit and force adjustment may be necessa ry due to weather conditions. Refer to pages 16-17 for adju s tment. Conduct safety reverse test after ANY adjustments. - Lubricate door rollers, bearings and hinges. The opener is permanent ly lubricated, DO NOT lubricate or grease the opener, rail or door tracks. Maintenance With proof of purchase a def ective product will be repaired free of charge. LIMITED WARRANTY ON PARTS FROM THE 91st DAY THROUGH 1 YEA R from the date of sale th is product is warranted against defective parts. With proof of pur chase a new part will be furnished to replace a defective one free of charge. Any costs for professi onal installation are not included. LIMITED WARRANTY ON MOTOR FROM THE 91st DAY THROUGH 4 YEARS from the date of sale the mo tor on this product is warranted against defects in material or workmans hip. With proof of purchase a new motor will be furnished to replace a defective one free of charge. Any costs for professional installation are not included. This warranty also does not cover any problems caused by interference. LIMITATION ON LIABILITY Seller will not be liable for loss or damage to property or any incidental or consequential loss or expense from property damage due direct ly or indirectly to the use of this product. Some states do not allow the exclusion or limit ation of incidental or consequentia l damages, so the above limitation or exclusion may not apply to you. DISCLAIMER OF IMPLIED WARRANTIES Except for the motor, all implied warranties for this product, includi ng but not limited to any implied warranties of merchantability and fi tness for a particular purpose, ar e limited in duration to the 90 day and 91st day through 1-year lim ited warranty period set forth abov e. All implied warranties with respect to the motor are limited in duration to t he 91st day through 4-year limited warranty period set forth above. No implied warranties will exist or apply after such periods. Some states do not allow limitations on how long an implied warranty lasts, so the above limit ations may not apply to you. This warranty applies only while this pr oduct is in use in the United States. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Sears Brands Management Corporat ion, Hoffman Estates, IL 60179 26. The garage remotes make the operation of your garage easy. It prevents you from having to actually go into the garage and press the wall button to work your garage door. You can easily program the Craftsman garage door opener to work with new remotes. You can also reprogram the opener if your old remote stops working. There are many different models of the Craftsman garage door opener. This article provides instructions for model numbers 139.53225RT, 139.53325SRT, 139.53425SRT, 139.53628SRT, 139.53629SRT, 139.53635SRT, 139.53637SRT, 139.53824SRT and the Craftsman 971LM Liftmaster Chamberlain. This is the large box that is attached on the inside of your garage that causes the garage to go up and down. Press and release the “Learn” button. The light beside the button will light up for about 30 seconds. Wait until the light goes off. If you have a garage door remote that has three buttons, you can choose any of the three buttons. Press and hold down the “SRT” button. This should be done while you are still holding down the button for the garage door remote. This can take a few seconds. When the light flashes it is an indication that your garage door opener has been properly programmed to work with the remote. To reprogram the opener to work with old remotes you will follow the same steps. Show Comments. Fasten the manual near the garage door after installation. Periodic checks of the opener are required to ensure safe operation. DO NOT install on a one-piece door. NEVER permit children to access the wall panel nor remotes. Operate the door ONLY when it is properly adjusted, and there are no obstructions present. ALWAYS keep a moving door in sight until completely closed. NEVER cross the path of a moving door. Replace with 23AE 12 volt batteries ONLY. Dispose of batteries properly The unit is now ready to learn a remote. Within 30 seconds, press the button on the remote.Retry programming the remote by repeating the steps above. The courtesy light will flash 7 times indicating all remotes have been removed from memory. 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. NEVER permit children to access the wall panel, push button nor remotes. Operate door only when it is adjusted properly with no obstructions to door travel and is in clear sight. NO ONE should cross the path of a moving door. To reduce risk of fire, explosion or electric shock: DO NOT short circuit, recharge, disassemble or heat battery. Replace with 1.5 volt AAA batteries ONLY. Dispose of batteries properly. If more than 20 personal codes are stored, the previously stored one from the very beginning will be replaced, (i.e. the 21st remote replaces the 1st stored one.) Locate keyless entry within sight of door at minimum height of 5 feet (1.5m), ensure it is away from reach of children and moving parts of door and hardware. Test the reception of the keyless entry before mounting. Change location for better reception if necessary. To attach to a wooden surface use the screws provided. In case of a drywall surface, drill holes and use drywall anchors provided. To replace battery, remove the battery cover by loosening the screws underneath, and replace the battery with two1.5 volt AAA batteries. NEVER permit children to access the wall panel or remotes. Operate the door ONLY when it is properly adjusted, and there are no obstructions and is in clear sight. NEVER cross the path of a moving door. If travel limit adjustment is made, force adjustment may also needed. ALWAYS ensure that your door is balanced and in good working condition. Use emergency release ONLY when doorway is clear of persons and obstructions. DO NOT use emergency release to pull the door open or closed. Post in the comments. Your model may look different than illustrated in this programming guide. Two people may be needed to program the HomeLink system. Refer to your vehicle’s owner’s manual for programming steps. The “Learn” LED will glow steadily. If light bulbs are not installed in the garage door opener, two clicks will be heard. Your door should now be operational. Gentex Corporation is not responsible for property damage that results from failure to follow instructions or product listings indicated by the. Please try again.Please try again.In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. Register a free business account Full content visible, double tap to read brief content. Not for children under 3 yrs. Please try your search again later.The Chamberlain Keyless Entry offers wireless installation and allows use of a 4-number pin security code to open and close your garage door. It is designed for hassle-free wireless installation and programming. Includes a cover for weather protection. Seamlessly fits into any home design.The Chamberlain 940EV Keyless Entry offers wireless installation and allows use of a 4 number pin security code to open and close your garage door. It is designed for hassle free wireless installation and programming. Seamlessly fits into any home design.The wireless design can be installed and programmed in minutes. Access the home with a 4-number PIN. A temporary PIN can be programmed for deliveries and guests. This system can upgrade or replace existing garage systems.To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness. Please try again later. Phages'R'Phun 3.0 out of 5 stars Immediately found out that you could open the garage door, simply by pressing Enter on the unit, regardless if a PIN was entered. Works as it should, but you should make sure you can't open the door by simply pressing ENTER.The printed instructions have an error, though. The instructions on the lid of the keypad have this correct, but the paper instructions have it wrong.Followed the instructions perfectly - then noticed they were also printed on the inside of the cover AND THEY ARE DIFFERENT THAN THE PAPER COPY THAT COMES WITH THE UNIT.The original one had begun to be harder and harder to key and perform its function.