How do u set. Timer and how long should it run

Buy another timer:
http://waterheatertimer.org/Countdown-timer-horsepower-ratings.html

Gene

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I cannot find a manual for the Darlac DW253.
It appears the timer is set by moving each selector knob.
http://www.watermate.co.uk/secure/uploads/DW253%20(Small)%20new%20darlac%20pop.jpg

Knob on right is Run Time:
This is how many minutes timer will run each time.
Set run time from 1 minute to 120 minutes.
Knob on right also has ON-OFF override.

Knob on left is Frequency:
This is how frequently the timer will turn ON. Once per hour, once per each 2 hours ... once per 24 hours ... once per 72 hour ... once per week.

So set frequency to 48 and set run time to 20, then every 48 hours the water will turn on for 20 minutes.
To turn timer off, move right knob to OFF.
For continuous watering, turn same knob to ON.

This timer is battery-powered, probably 9 Volt, but maybe AA.
Battery carriage appears to be located on front below the function knobs.
Typically, water timer batteries last one season.

Timer can be connected to household spigot, or connected to any passive water supply for example rain barrel or tank.
Appears to have standard female hose thread on top, or possibly 1/2 pipe thread, and quick connection on bottom.

Plastic water timer exposed to freezing temperatures can crack. Drain water out of timer during cold weather.
Generally if water timer stops working: replace battery, clean battery terminals, and if functionality is not restored, then buy another timer.

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You have Intermatic mechanical timer connected to swimming pool pump/filter.
Open following link to read about setting timer:
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
Lift and rotate dial until current time is lined up with stationary pointer.
Put on-off trippers on outer edge of dial.
Timer comes with 2 sets of trippers, and you can order replaceable trippers. Up to 12 sets of trippers can be added to dial for a total of 12 ON and 12 OFF events each 24-hour period.
For 35000 gallon, pump should run at least 6 hours each 24-hour period. During freezing weather, if pipes are above ground, you can remove trippers from dial, set override lever to ON position, and run pump 24-hours to prevent frozen pipes.

LCD Programmable Timer (630-0892) Operation Faxback Doc. # 17153 Setting The Time and Day Follow these steps to set the current time and day. 1. Slide RUN/PROG/TIME SET to TIME SET. 2. Press HOUR to set the hour digits. Pressing and holding down HOUR rapid- ly advances the hour digits. NOTE: P appears to the left of the hour digits to indicate P.M. hours. 3. Press MIN (minute) to set the minutes digits. Pressing and holding down MIN rapidly advances the minute digits. 4. Press DAY until the correct day abbreviation appears. 5. Slide the RUN/PROG/TIME SET switch to RUN. The colon flashes to show the clock is running. NOTE: Keep this switch set to RUN to prevent accidentally changing the time. Setting The Timer The timer has 14 settings (1-14). Odd numbered settings specify a time to turn on the appliance and even numbered settings specify a time to turn off the appliance. Follow these steps to set your timer. 1. Slide the RUN/PROG/TIME SET switch to PROG. The display shows the first setting. If you have not entered any setting, the display appears as shown in the illustration. 2. Press Event to select a setting to enter or change. 3. Press Hour to set the HOUR digits and press MIN to set minute digits to the correct time. NOTE: Be sure P appears to the left of the hour digits when you want to set a P.M. hour. 4. Press Day to select the day of the week for this setting. If you want the setting to apply to every day of the week, repeatedly press DAY until all day indicators appear on the display. 5. When you finish entering the setting, press EVENT. The timer advances to the next setting. 6. Repeat Steps 3 through 5 to enter additional settings. NOTES: Be sure to set the timer to turn off the appliance. The appli- ance remains on as long as there is power if you do not set a time for the appliance to turn off. To replace an existing event, select its setting number and set the new event time. To clear an event, select its setting number and press CLEAR twice. Be sure to clear both the on time and the off time for an event. If you set the timer to turn on the appliance every day, be sure to also set the timer to turn off the appliance every day. 7. Set the RUN/PROG/TIME SET switch to RUN. NOTE: You must set this switch to RUN to turn on or off the appliance either automatically or manually. When the timer automatically turns on the appliance, ON appears on the display and the indicator lights red. When the appliance turns off, the indicator turns off. Reviewing The Settings To review the settings in your timer, set RUN/PROG/TIME SET to PROG. Setting 1 appears on the display. Repeatedly press EVENT to view the other settings. NOTE: To determine event being programmed, pull the power for a period of 5 minutes. Then re-power the unit. The first event will be "ON" and the next will be "OFF", etc. There will be a number to the side of the display that tells you which event you are programming, The even numbers are "OFF" and the odd numbers are "ON" events. (EB 3/17/97) (EB 7/16/97)

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If your pump is running constantly either the timer is set to "manual on" or the timer has failed. Check the settings on your timer. Usually on a mecanical timer the manual on lever is just under the 24 hour dial. On the electronic timers it is controlled by a relay that if it fails defaults to always run.

The timer could be set for accumulative instead of continuous . The one wire on the timer , set on the wrong terminal .

The start time on these style of timers is whenever you set it. So if you want it to run at night it needs to be set at night, e.g. turn to off/reset, then at 10pm go set to the freq. and duration desired, then it will run at 10pm. Also note this timer waits a full cycle to run the first time after it is set, e.g. if today you set it to run weekly, the first time will be next week.

I don't think the timer runs on 240 volts does it? You can switch 240, but the timer uses 120 volts to run. You might check the connections and timer clock rating more closely. Also, the 'off' & 'on' trippers are different, make sure you use the right one.



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Press the *power button* once to start the heater on high power, continuous run. If left at this setting, the unit will run continuously on high power (1500 watts, 12.5 amps) and will not shut off until the unit is manually turned off.
Press the *power button* again, to change to low power, continuous run, (900 watts, 7.5 amps) and will not shut off until the unit is manually turned off.

Set temperature:

Press the temp/timer button until the temperature icon blinks. Use the up and down arrows to set the desired temperature.
The temperature icon will stop blinking and the current room temperature will reappear after the desired temperature is set.

The heater will turn off and on to achieve the desired temperature.

Set timer: (auto off)

Press the timer/timer button until the timer icon blinks. The hour display will appear. The auto off icon will also appear.
Use the up and down arrow buttons to set the heater operation time between 1 and 10 hours. This function will activate once the timer icon stops blinking. The heater will automatically turn off whn the times runs out.

Set timer: (auto on)

Press the temp/timer button until the timer icon blinks. The hour display will appear. The auto on icon will also appear.
Use the up and down arrow buttons to set the heater start time between 1 and 10 hours. This function will activate once the timer icon stops blinking.
The heater will automatically turn on when time expires.

Hope this helps!