Download 42 Raynor Garage Door Opener PDF manuals. User manuals, Raynor Garage Door Opener Operating guides and Service manuals. Raynor gdo 1/3 Hp, Model 110-7: 0: gradauto1291: on Mon Oct 30, 2017 8:41 pm by gradauto Raynor 120-8 clicks but won't operate: 1: mechwreck1333: on Fri Sep 29, 2017 1:23 pm by GDZone Raynor 130-7 only runs in down direction: 1: cjcanterbury1965: on Fri Jun 02, 2017 3:24 am by garagedoorsrepair Raynor Model # 170 Capacitor: 3: Robert.
Topics | Replies | Author | Views | Last Posts |
---|---|---|---|---|
Raynor 170-7 wont close, open, light wont come on, help PLS | 1 | 551 | on Mon May 25, 2020 4:08 pm by chudat | |
Remote loose connection | 0 | 497 | on Tue Mar 12, 2019 3:48 pm by Devoman | |
Raynor 2265RGD Intermittent Problem Opening Door | 2 | 2348 | on Fri Dec 08, 2017 2:15 am by bankercop | |
Raynor gdo 1/3 Hp, Model 110-7 | 0 | 1293 | on Mon Oct 30, 2017 8:41 pm by gradauto | |
Raynor 120-8 clicks but won't operate | 1 | 1338 | on Fri Sep 29, 2017 1:23 pm by GDZone | |
Raynor 130-7 only runs in down direction | 1 | 1968 | on Fri Jun 02, 2017 3:24 am by garagedoorsrepair | |
Raynor Model # 170 Capacitor | 3 | 2673 | on Mon May 08, 2017 9:07 am by queensgarage | |
Raynor door opening on its own | 2 | 2999 | on Mon May 08, 2017 9:01 am by njoverheadgaragedoors | |
Raynor 110-7 | 1 | 1680 | on Fri May 05, 2017 10:14 am by longislandgarage | |
Raynor #545RGD controller problem | 4 | 3166 | on Fri May 05, 2017 9:10 am by brooklynnygarage | |
Raynor 150-70 | 8 | 2668 | on Wed Apr 19, 2017 8:31 am by garagedoorsrepair | |
Raynor 1/3 HP Model 110-7 | 6 | 5006 | on Wed Apr 19, 2017 4:57 am by brooklynnygarage | |
Raynor Pilot | 5 | 1331 | on Mon Mar 27, 2017 4:26 am by brooklynnygarage | |
Raynor 270-7 Shaft, Sprocket, Reversing Lever Assembly P/N 4050049 | 1 | 1044 | on Mon Mar 20, 2017 11:10 am by GDZone | |
Keypad working inconsistently | 1 | 1541 | on Mon Aug 24, 2015 1:48 am by GDZone | |
Model 2265RGD 1/2 HP - light won't turn off | 1 | 1420 | on Sun Aug 02, 2015 11:58 am by Tapshoe | |
Raynor model 170-7 will not close using remote | 2 | 5331 | on Tue May 20, 2014 2:48 am by orenlinder | |
DIY Tips for Raynor Opener Maintenece | 0 | 2016 | on Wed May 14, 2014 2:29 am by orenlinder | |
Raynor Opener Installation & Buying Cost | 0 | 1276 | on Thu Apr 24, 2014 9:37 am by orenlinder | |
Raynor 2265 pilot remote issue | 1 | 2412 | on Mon Sep 23, 2013 12:37 pm by Jlw20734 | |
Mod 130-7 will only travel forward/down | 3 | 1874 | on Sun Aug 11, 2013 5:08 pm by willietc | |
Raynor Navigator (1245RGD) has power, but will not open/close | 5 | 4995 | on Thu Jul 11, 2013 12:22 pm by GDZone | |
Raynor 3255RGD won't close but looks aligned | 3 | 4637 | on Fri Jun 14, 2013 12:58 pm by GDZone | |
Raynor 170-7 works once after unplugged/reset | 1 | 3640 | on Wed Apr 10, 2013 12:43 pm by Hal H | |
Sensor Problem | 3 | 2115 | on Thu Feb 14, 2013 10:02 pm by tmordoor1 | |
Flitestar logic board | 3 | 6849 | on Tue Jan 29, 2013 10:37 pm by brucemcdon | |
Raynor RBT321 Sr2 wiring diagram | 0 | 3783 | on Fri Jan 25, 2013 8:38 pm by cdfarming | |
Wall station power but not working | 6 | 2234 | on Wed Jan 16, 2013 10:56 pm by Jparr | |
Raynor 170-7 | 0 | 2495 | on Wed Jan 16, 2013 4:55 pm by hawgrider | |
Need light cover for Model 120-7 | 1 | 2907 | on Fri Nov 09, 2012 2:12 am by GDZone | |
Need Replacement 6-tooth Chain Drive Sprocket for Model 170-7 | 1 | 2866 | on Tue Sep 25, 2012 12:06 am by TheDoorGuy | |
Reynor Commercial Garage Door Opener | 1 | 3836 | on Mon Sep 24, 2012 11:53 pm by TheDoorGuy | |
R130-7 WILL NOT OPEN DURING COLD WEATHER | 5 | 5087 | on Tue Mar 13, 2012 12:11 pm by clem629 | |
Raynor 170-7 wiring question | 2 | 7572 | on Mon Jan 30, 2012 3:20 am by rwood7 | |
Raynor 250-7 opener logic board | 1 | 6398 | on Thu Dec 15, 2011 11:45 am by clem629 | |
model 130-7 won't move chain when engaged in carriage | 1 | 2358 | on Wed Nov 02, 2011 12:39 pm by GDZone | |
Raynor R 150-7 | 3 | 9999 | on Wed Jun 29, 2011 10:38 am by GDZone | |
170-7 Wiring Diagram (low voltage) | 1 | 8616 | on Mon Jun 27, 2011 5:56 pm by GDZone | |
Raynor Model 130-7 intermittent problem | 2 | 8076 | on Tue Jun 21, 2011 7:28 pm by cwilly8 | |
raynor model 130-7 | 1 | 4883 | on Thu Apr 21, 2011 10:05 am by GDZone | |
Raynor 170-7 works from wall switch, eyes clear with no blinking red lite and when reset it works once from transmitter, never from remote. | 12 | 9999 | on Fri Apr 15, 2011 4:18 am by swimmingspa111 | |
raynor pilot adjustment | 2 | 3451 | on Fri Feb 04, 2011 11:47 am by web | |
170-7 needs help | 4 | 2103 | on Fri Nov 26, 2010 10:28 am by wstoneking | |
Pilot 3265RGDM light issue | 1 | 2694 | on Thu Oct 28, 2010 11:49 am by GDZone | |
Garage doors open during the night | 7 | 3371 | on Mon Aug 30, 2010 11:03 am by GDZone | |
Raynor R170 Won't Stop Going Down | 3 | 2939 | on Wed Aug 18, 2010 5:48 pm by GDZone | |
Raynor circuit boards 170-7 | 1 | 3667 | on Thu Jul 08, 2010 7:34 pm by GDZone | |
Problems with my Raynor 170-7....HELP!!! | 4 | 6793 | on Mon Jun 07, 2010 5:49 pm by GDZone | |
raynor pilot garage door opener - gear assembly | 1 | 5786 | on Fri May 07, 2010 12:29 pm by GDZone | |
Model 250-7 Raynor opener Light stays on | 4 | 7554 | on Sat Apr 17, 2010 11:30 am by JeffyG |
You cannot post new topics in this forum
You cannot reply to topics in this forum
Users browsing this forum: 0 Registered, 0 Hidden and 1 Guest
- New posts
- No new posts
- New posts [ Popular ]
- No new posts [ Popular ]
- New posts [ Locked ]
- No new posts [ Locked ]
- Announcement
- Sticky
- Global announcement
Raynor is a US manufacturer of residential garage doors made of steel and aluminum, as well as commercial sectional and rolling doors. The company established in 1944 is based in Dixon, Illinois.
Products made by this brand can be particularly long-lasting, especially if they are installed by professionals and if you follow instructions from the Raynor garage door opener manual.
Yet there may be an issue at times. It is a smart idea to start by consulting the Raynor garage door troubleshooting chart below. When you have an understanding of the problem, you will be able to decide whether you really need someone’s help to finish Raynor garage door repair.
Raynor Premium series 8500RGD Prodigy II garage door opener troubleshooting
One of Rayonor’s most well-known Premium series models, the 8500RGD Prodigy II garage door operator may be used on both residential and light duty commercial doors. It was created exclusively for sectional doors with torsion assemblies. One of the convenient features available in this model is battery backup.Problems | Solutions/Symptom |
1 Flash Safety reversing sensors wire open (broken or disconnected) OR 2 FLASHES Safety reversing sensors wire shorted or black/white wire reversed | One or both of the Indicator lights on the safety sensors do not glow steady. • Inspect sensor wires for a short (staple in wire), correct wiring polarity (black/white wires reversed), broken or disconnected wires, replace/attach as needed. • Disconnect all wires from back of garage door opener. • Remove sensors from brackets and shorten sensor wires to 1 -2 ft. (30-60 cm) from back each of sensor. • Reattach sending eye to garage door opener using shortened wires. If sending eye indicator light glows steadily, attach the receiving eye. • Align sensors, if the indicator lights glow replace the wires for the sensors. If the sensor indicator lights do not light, replace the safety reversing sensors. |
3 Flashes Door control or wire shorted | The door doesn't activate from the door control. • Inspect door control/wires for a short (staple in wire), replace as needed. • Disconnect wires at door control, touch wires together. If garage door opener activates, replace door control. • If garage door opener does not activate, disconnect door control wires from garage door opener. Momentarily short across red and white terminals with jumper wire. If garage door opener activates, replace door control wires. |
4 Flashes Safety reversing sensors slightly misaligned (dim or flashing LED) | Sending indicator light glows steadily, receiving indicator light is dim or flashing. • Realign receiving eye sensor, clean lens and secure brackets. • Verify door track is firmly secured to wall and does not move. |
5 Flashes Motor RPM is not recognized | Door travels 2-3 inches and stops. • Reprogram limits and forces. • If the motor unit continues to travel 2-3 inches, check the travel module connection or replace the travel module.' SYMPTOM: No movement, motor runs 2-3 seconds. • Reconnect the emergency release. • Motor may need to be replaced. |
9 Flashes Cable tension monitor reversal | Door stops and reverses while closing. • Check for possible door obstructions and remove. • Check that the cable tension monitor is properly connected to the opener. • Replace the cable tension monitor. |
10 Flashes Limits and forces need reprogramming | Door stops while opening. • Reprogram limits and forces. |
11 Flashes Limits and forces need reprogramming | Door stops and reverses while closing. • Reprogram limits and forces. |
12 Flashes Attempting to compensate | Door stops and reverses while closing. • Garage door opener will try to compensate three times before turning to a 10 Flash. |
13 Flashes Attempting to compensate | Door stops while opening. • Garage door opener will try to compensate three times before turning to a 11 Flash. |
The garage door doesn't operate from the MyCF Home Control App or website. | • When using Model 580LG Alternate Power Supply or when in Battery Backup mode, the Internet Gateway will not activate the garage door through the MyQ® Home Control App. If you wish to use the Internet Gateway with your garage door opener, please contact your local electrician to wire an outlet next to the garage door opener. |
The garage door opener doesn't operate from either the Door Control or the remote control: | • Does the garage door opener have electric power? Plug a lamp into the outlet. If it doesn't light, check the fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.) • Have you disabled all door locks? • Is there a build-up of ice or snow under the door? The door may be frozen to the ground. Remove any restriction. • The garage door spring may be broken. Have it replaced. • If the yellow command LED does not turn on, reverse the wires connected to the RED and WHT terminals of the control panel. Replace wire if necessary. |
The yellow and red LEDs on the Door Control are blinking quickly: | • The control panel is charging, and may take up to 5 minutes to become operational. |
My remote control will not activate the garage door: | • Verify the lock feature is not activated on the door control. • Reprogram the remote control. • If the remote control will still not activate the door check the diagnostic codes to ensure the garage door opener is working properly. |
The remote control has short range: | • Change the location of the remote control in your car. • Check to be sure the antenna on the side or back panel of the garage door opener extends fully downward. • Some installations may have shorter range due to a metal door, foil backed insulation, or metal garage siding. |
The door doesn't open completely: | • Check power door lock. • Is something obstructing the door? Is it out of balance, or are the springs broken? Remove the obstruction or repair the door. |
The door opens but won't close: | • Check cable tension monitor • If the garage door opener lights blink, check the safety reversing sensor. • If the garage door opener lights don’t blink and it is a new installation. For an existing installation. Repeat the safety reverse test after the adjustment is complete. |
The door reverses for no apparent reason and garage door opener lights don’t blink: | • Check cable tension monitor. • Is something obstructing the door? Pull the emergency release handle. Operate the door manually. If it is unbalanced or binding, call a trained door systems technician. |
Raynor MJ5011UCHB garage door opener troubleshooting
The MJ5011UCHB garage door opener produced by the US-based manufacturer Raynor is a medium duty door operator equipped with a built-in 315 MHz radio receiver. The model was created exclusively for commercial use. The opener system can perform not more than 12 cycles per hour or 50 cycles per day.Condition | Possible cause | Fix |
Operator will not respond to any commands | A) No power | ― Verify primary line voltage (120 Vac, 60 Hz) is present at terminals L1 & 12. The LED will flash when power is present. |
B) Stop circuit not complete | ― Verify Stop Button input (terminals 3 & 5) is properly wired and stop button is not stuck. | |
C) Stuck button on 3-button control station | ― Verify that all buttons are actuating freely and releasing properly. | |
D) Interlock input activated | ― Verify jumper is located at terminals 3 & 4 if interlock is not present. | |
― Verify interlock is properly wired and not activated. | ||
E) Motor overload tripped | ― Overload is internal within motor. Allow to cool and retry. | |
F) Accessory failure | ― Attempt to close by holding the CLOSE button for more than 5 seconds. If door closes, check accessory for proper wiring, polarity, connections or damage. | |
― Verify photoelectric sensors are aligned or sensing edge is not activated. | ||
G) Possible component failure | ― Call Technical Support for assistance. | |
Operator makes noise but door does not move | A) Clutch slipping | ― Adjust clutch |
B) Brake not releasing (if present) | ― Verify brake assembly operation and wiring. | |
C) Door operation problem | ― Disconnect trolley and check door for proper operation. | |
Operator moves in the wrong direction | OPEN and CLOSE button wiring connection reversed | ― Check 3-button control wiring. |
Door drifts after operator stops | A) Door not balanced property | ― Disconnect trolley assembly and check door for proper operation. |
B) Clutch slipping | ― Adjust clutch | |
C) Brake not functioning properly | ― Check brake mechanism to ensure brake lever is free and brake pads are engaging the brake disc. | |
Door opens/closes too far | Limits not adjusted properly | ― Adjust limits. |
Door reverses unexpectedly | Intermittent Entrapment Protection Device activation | ― Check all connections. |
Ttc not functioning | A) Monitored Entrapment Protection Devices | ― Check all connections. Verify photoelectric sensors are not blocked and the sensing edge is not activated. |
B) TTC temporarily disabled | ― Close and Open the door. TTC will be re-enabled. | |
C) TTC not programmed properly | ― Reprogram TTC. | |
No response | A) Remote control is not programmed | ― Make PROGRAMMING REMOTE CONTROLS |
B) Remote control not compatible | ― Obtain qualified LiftMaster remote control device. | |
C) Low battery | ― Replace battery. | |
Remote cannot be learned | A) Low battery | ― Replace battery. |
B) Remote control not compatible | ― Obtain qualified LiftMaster remote control device. | |
Poor radio range | A) Low battery in remote | ― Replace battery. |
B) Antenna not configured | ― Configure the RADIO ANTENNA. | |
C) Ambient radio interference or building structural issue | ― Use EXTERNAL ANTENNA kit |
Raynor FliteStar-7 garage door opener troubleshooting
Raynor FliteStar-7 is a residential garage door opener created for up to seven foot high doors. The opener provides additional safety due to the auxiliary entrapment protection system complementing the usual built-in safety reverse feature. If the entrapment protection device is not installed, the door won’t operate correctly.Raynor Garage Door Model 120-7 Manual
Symptom | Probable solutions |
Operator runs from radio controls but not from push button | Check connections at push button and operator terminals. Wire may be broken under staples or at terminals. |
Reverse wires at terminals 6 and 7 on the back of the opener. | |
Remove wires from terminals 6 and 7, momentarily short across terminals 6 and 7, if operator runs then replace wall button. | |
Operator runs from push button but not from radio control | Check battery in transmitter. |
Check receiver and transmitter code setting. | |
Measure the voltage at terminals 1 and 3 on the 3 position terminal strip at the rear of the operator. With terminal 1 being negative and terminal 3 being positive, voltage should read between 20-28 VDC. | |
If it is necessary to return radio controls for repair, both transmitter and receiver must be returned. | |
Operator does not run from push button or radio control | Illuminated wall-mounted push button lock switch is activated. Operator plugged into outlet. |
Burned out fuse or open breaker. | |
Pull power plug and plug back in. | |
Replace microprocessor control board. | |
Operator stops functioning after repeated cycling | Motor may be overheated. Wait 20 minutes and try again. Replace microprocessor control board. |
Less than 25 feet operating range from radio control | Change battery in transmitter. |
Change location of transmitter in auto. | |
Mount receiver to wall and wire to operator. | |
If two or more operators are located within the same building, unplug all other operators and then test range. | |
Faulty radio - return to distributor to repair or replace | |
Motor hums but will not open or close the door | Jammed or hard moving door. Disconnect door from operator and check door for correct balance and operating condition. |
Do not disconnect an opened door, if door spring is broken the door may fall at a high speed and cause injury or property damage. | |
Repairs and adjustments, especially to cable and spring assembly, can be hazardous and should be performed by qualified door installers only. | |
Bad capacitor - Visually inspect capacitor | |
Motor - Disconnect motor leads and test motor windings and thermal protector with ohmmeter. Replace motor if windings or thermal protector are open. (Motor must be cool to test.) | |
Check for proper electrical connections. | |
NOTE: If operator is activated but does not open or close door, motor will shut off after approximately 25 seconds. | |
Unwanted (phantom operations) | Short in push button circuit. |
Check where stapled to wall or ceiling. | |
Check connections at both ends of the wire. | |
Can be caused by signal from another radio control in the area. Change frequency of radio control. | |
Door stops while it is opening | Make sure there is no obstruction keeping the door from opening or closing, either during door travel or photo eye obstruction. |
Door reverses while it is closing | Disconnect door arm and check door operation by hand. |
Adjust force adjustment sensitivity. Turning the screw counter-clockwise will require more force to stop or reverse the door. After making adjustments the safety reverse test must be performed. | |
Light will not come on | Check light bulbs and replace if burnt out. Check electrical connections. |
Faulty microprocessor board. | |
Illuminated wall-mounted push button locked. | |
Light will not go off | Press wall button or radio control to reactivate timer. |
Wait 5 minutes before initiating another signal. Light should go off. Faulty microprocessor board. | |
Door does not fully open or close | Make sure there is no obstruction keeping the door from opening or closing. |
Operator limit switch settings need adjustment. | |
Operator will not reverse when door hits an obstruction while closing | CAUTION - Do not use a door operator that does not reverse when coming in contact with a solid object 1 inch from the floor. If the operator cannot be made to function properly, disconnect and disable it until a qualified door installer can make repairs. |
Readjust force adjustment sensitivity. Turning the screw clockwise will require less force to reverse the door. | |
Close limit not set properly. Adjust close limit for more travel. | |
Radio control will only operate to open the door | External entrapment safety device malfunction check instructions for device used. Red light on back of operator will be on to indicate this. |
Wall button must be held in to close the door | External entrapment safety device is not installed. This is normal operation without device installed. |
Burned out fuse or open breaker | MOV on terminal strip blown. Remove cover and visually inspect MOV. (Power head Assembly, for location.) If discolored, deformed, or cracked, replace MOV. |
Raynor COMMANDER 2000RGD garage door opener troubleshooting
Raynor COMMANDER 2000RGD is a residential garage door opener powered by a 1/2 HP motor. It is important to point out that the door operator system won’t work correctly unless the protector system is properly aligned. The troubleshooting tips below will enable you to fix the garage door opener on your own in case of minor issues.Raynor Model 120-7 Manual
Situation | Probable Cause & Solution |
The opener doesn 7 operate from either the door control or the remote control: | 1. Docs the opener have electric power? Plug a lamp into the outlet. If it doesn't light, check the fuse box or the circuit breaker. (Some outlets arc controlled by a wall switch.) |
2. Have you disabled all door locks? | |
3. Is there a build-up of ice or snow under the door? The door may be frozen to the ground. Remove any restriction. | |
4. The garage door spring may be broken. Have it rcplaccd. | |
5. Repeated operation may have tripped the overload protector in the motor. Wait 15 minutes. Try again. | |
Opener operates from the remote control, hut not from the door control: | 1. Is the door control push bar lit? If not, Remove the bell wire from the opener terminal screws. Short the red and white terminals by touching both terminals at the same time with a piccc of wire. If the opener runs, check for a faulty wire connection at the door control, a short under the staples, or a broken wire. |
2. Arc the wiring connections correct? Review Installation | |
The door operates from the door control, but not from the renwte control: | 1. Is the door push bar flashing? If your model has the Lock feature, turn it off. |
2. Your opener needs to re-lcam a remote control code. | |
3. Program the receiver to match the remote control code. | |
4. Repeat the rccciver programming procedure with all remote controls. | |
The remote control has short range: | 1. Change the location of the remote control in your car. |
2. Check to be sure the antenna on the right side panel of opener extends fully. | |
3. Some installations may have shorter range due to a metal door, foil backcd insulation, or metal garage siding. | |
Opener noise is disturbing in living quarters of home: | If operational noise is a problem bccause of proximity of the opener to the living quarters, the Vibration Isolator Kit 41A3263 can be installed. This kit was designed to minimize vibration to the house and is easy to install. |
The garage door opens and closes by itself: | 1. Be sure that all remote control push buttons and battery indicator lights arc oil'. |
2. Remove the bell wire from the door control terminals and operate from the remote control only. If this solves the problem, the door control is faulty (rcplace), or there is an intermittent short on the wire between the door control and the opener. | |
3. Clear memory and reprogram all remote controls. | |
The door doesn’t open completely: | 1. If the door has been working properly but now doesn't open all the way, increase the up force. |
2. Is something obstructing the door? Remove the obstruction or repair the door. | |
3. If door opens at least 5 feet, the travel limits may need to be increased. One turn equals 2 inches of travel. Repeat the safety reverse test after the adjustment is complete. | |
The door stops but doesn't close completely: | Review the travel limits adjustment procedures Repeat the safety reverse test after any adjustment of door arm length, close force or down limit. |
The door opens but won't close: | 1. If the opener lights blink, cheek the safety reversing sensor. |
2. If the opener lights do not blink and it is a new installation, check the down force. For an existing installation, sec below. Repeat the safety reverse test after the adjustment is complete. | |
The door reverses for no apparent reason and opener lights don't blink: | 1. Is something obstructing the door? Pull the manual release handle. Operate the door manually. If it is unbalanced or binding, call for professional garage door service. |
2. Clear any ice or snow from the garage floor area where the door closes. | |
3. Review the force adjustment procedures | |
4. If door reverses in the fully dosed position, dccrcasc the travel limits. Repeat the safety reverse test after adjustments to force or travel limits. The need for occasional adjustment of the force and limit settings is normal. Weather conditions in particular can affect door travel. | |
The door reverses for no apparent reason and opener lights blink for 5 seconds after reversing: | Check the safety reversing sensor. Remove any obstruction or align the receiving eye. |
The opener lights... | Don't turn on: Rcplacc the light bulb(s) (100 watts maximum). Use a standard neck garage door opener bulb if regular bulb burns out. don't turn off: Is the Light feature ow? Turn it off. |
The opener strains or nuiximum force is needed to operate door: | The door may be out of balancc or the springs arc broken. C lose the door and use the manual release handle to disconnect the trolley. Open and close the door manually. A properly balanced door will stay in any point of travel while being supported entirely by its springs. If it docs not, disconnect the opener and call for professional garage door scrvicc. Do not increase the force to operate the opener. |
The opener motor hunts briefly, then won't work: | 1. The garage door springs arc broken. Sec above. |
2. If the problem occurs on the first operation of the opener, door mav be locked. Disable the door lock. Repeat the safety reverse test after the adjustment is complete. | |
The opener won't operate due to power failure: | 1. Use the manual release handle to disconnect the trolley. The door can be opened and elosed manually. When power is restored, press the Door Control push bar and trolley will automatically rcconncct (unless trolley is in lockout position.) |
2. The Outside Quick Release accessory (lor use on garages with no scrvicc door) disconnects the trolley from outside the garage in ease of power failure. |