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How
to replace Intermatic clock motor E-mail: geno03245w@gmail.com |
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 Timer mechanism |
Pull
out mechanism clock motor is on back. Check general condition of gears. Apply bit of white grease to steel gears. Clock motor gears are plastic so they will not bind against steel gears. If clock motor gear is stripped out where it meets steel gear, then the steel gears might have debris that is binding gears to a halt. Clean steel gears. |
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for model number. Clock motors start with WG or CW etc  Convert timer to different bvoltage  >>>>>
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| How to wire T1905-6/ T175-6 How to wire sprinkler timers How to wire T100 T170 and pool series timers T100 series timers and manuals T170 series timers and manuals |
More
clock motors/ Resources Intermatic box timers and manuals Intermatic pool timers and manuals Intermatic control panels How to wire T100 T170 and pool series timers |
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Clock
motor is held with 2 star-screws Image on left shows typical WH40 and T100 series timers Remove 2 screws Buy star screwdriver from auto parts store or hardware store. Clock wires connect to terminals on front of timer Make sure clock wires do not interfere with moving parts Tighten all screws very tight |
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Keep wires straight Use solid copper wire If wiring terminal or end of wire are covered with green, use emery board to clean terminal and sandpaper to clean wire. |
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Both wires MUST be same
gauge Straighten each wire If wire is corroded or overheated, clean the end with sandpaper and wipe with cloth. If wire has been melted, cut back and reattach, or replace wire. Tighten screw very tight against copper wire |
Use wire connector |
 Use push-on wire connectors |
3
wires/ or different gauge wires Join wires with wire connector or push-on connector Run jumper to screw terminal. Buy: Push on wire connectors at Amazon Red 3P connector (shown) for 10-14 gauge wire Connector assortment Resource: How to select and install wire connector |
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Fire safety/ Do not put stranded
wire under screw plate Do not install stranded wire under screw. Problem1: picture shows 2 different gauge wires under screw plate Problem2: Stranded wire will expand and contract and come loose under screw plate, even if it is the only wire under the screw plate Attach stranded wire and solid wire with wire connector, and run solid copper jumper wire to screw terminal Take photo of wires before starting.  Resources: Timer caught fire Load ratings for Intermatic timers/ pdf |
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  12 Ga |
10 gauge or 12 gauge? Compare your wire with short pieces of 10 and 12 gauge wire from local box store 10 gauge for 30 amp breaker. 10 gauge wire can have black-white and sometimes black-red 12 gauge for 20 amp breaker 12 gauge will have black and white wires . Resources: Match color code and amp rating for wire Basic house wiring |
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Add black tape when White wire
carries voltage (applies to 208 and 240V
circuits) With 120 and 277 Volt circuits, White wire is Neutral, and Black is Hot With 208 and 240 circuits, both wires are Hot, and both wires carry voltage Black tape on White wire identifies wire is Hot and not Neutral |
| How to troubleshoot Intermatic timer | |
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 Never
assume power is OFFUse non-contact voltage tester on timer, on wire, on outlet to see if power is present. Press button on tester, if single beep then no power is present. If continuous beep then power is present. Never stand on bare ground, always stand on dry boards, do not hold or touch anything metal when working on timer or water heater that has power, tape tester leads to wood sticks, never touch wet water heater, or flooded water heater, or timer that had a short or fire without turning power OFF. Buy: Multimeters at Amazon Buy non-contact voltage tester at Amazon Electric testers at Amazon Shop Amazon - Industrial and scientific Shop Amazon - Industrial Electric Products |
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| Dial rotates on time | Manual override turns Load ON-OFF | Load turns ON-OFF | Troubleshoot action |
| 1) Yes
Dial rotates on time If dial is rotating, then electricity to timer is good. |
Yes Load turns on-off with override |
Yes Load turns on-off |
No action Timer working |
| 2) Yes
Dial rotates on time |
Yes Load turns on-off with override |
Yes Load turns on-off But only when using override |
Replace trippers. Check copper wire at terminals |
| 3) Dial
rotates But not keeping time |
Yes Load turns on-off with override |
Yes Load turns on-off But not at scheduled time |
Replace clock motor. How to replace clock motor Check loose wires Check circuit breaker Reset clock after power outage |
| 4) Yes
Dial rotates on time |
Yes Load turns on-off with override |
No Turns ON but not OFF -or- turns OFF but not ON |
Replace trippers Intermatic trippers and parts |
| 5) Yes
Dial rotates on time |
NO,
Load does not turn on-or-off, But override snaps crisp-n-clean |
No
Load does not turn on-or-off |
Check breaker and power to Load; Check Load is working Test for voltage going to load. Check for loose wires |
| 6) Dial
rotates But stops after tripper passes |
Yes Load turns on-off with override |
Yes
Until dial stops |
Check Wiring. Line and Load wires are reversed. (Line wires are from breaker. Load wires go to electrical device.) |
| 7) NO Dial not rotating |
Yes Load turns on-off with override |
Yes
But with override lever only |
Replace clock motor How to replace clock motor |
| 8) NO Dial not rotating |
No | No Load does not turn on-off |
Check wiring How to wire T100 series How to wire Sprinkler timers More timer wiring Check circuit breaker and power to timer How to replace circuit breaker Check wires at terminals Use nose to smell for burned connection Burned wires, scroll down on page. |
| 9) Yes/NO Dial not rotating |
Lever is sluggish or stuck and will not move | Yes/No Load does not turn on-off |
Turn off power, spray WD-40 on lever and gears, replace clock motor, buy new timer |
| 10)
Timer wires are burned and
melted Scroll down on this page |
Chart as pdf | ||
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Pointer
was moved? T100 series pointer points straight down to 6 o'clock Sprinkler timer pointers point to 7 o'clock Lift and rotate dial clockwise until current time lines up with with siilver pointer How to operate and set T104 timer |
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How to operate and set T104 timer How to wire Intermatic T100 series timers How to wire Intermatic T1905 and T1906 How to wire Intermatic WH40 and EH40 and EH10 How to wire several brands of box timers |
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 Snap into old box |
Buy mechanism and snap into existing box Necessary only if gears are rusted and manual override lever does not snap crisp and clean. New trippers and clock motor are cheaper |
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| All
brands of timers including Intermatic sprinkler: With 120Volts, Line is the black hot wire. And Neutral is the white wire. Connect the black and white wires to terminals marked Line and Neutral. With 240Volts, both wires from breaker are hot Line wires. L1 and L2. Either hot wire can connect to either terminal without regard to wire color. |
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Troubleshoot plug-in timers | ||||||
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Tools DEWALT Black and Decker Stanley SKIL Makita Porter-Cable Bosch Irwin Hand tools Klein hand tools Fluke electrical testing Dremel hobby tools Campbell Hausfeld air powered Tekton automotive Powerbuilt automotive Saws and saw blades |
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Resource: Compare box timers DPDT timers Intermatic Control water heater w/ Z-wave |
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Resource: Intermatic control centers: and parts Digital control centers and parts Tork control centers and parts Subpanels All control centers and parts Enclosures |
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Resource: Programmable timers Countdown timers Off delay timers On delay timers Timer modules Din rail Twin & one-shot Woods Intermatic Tork |
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Recirculation systems |
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