MC-4E - Controller Irritrol - Free user manual and instructions
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| Product Type | Irrigation Controller |
| Brand | Irritrol |
| Model | MC-4E |
| Number of Stations | 4 |
| Power Supply | 24 VAC, 50/60 Hz |
| Transformer Output | 24 VAC, 1 A |
| Dimensions (W x H x D) | 8.5 x 6.0 x 3.0 inches (216 x 152 x 76 mm) |
| Weight | 1.2 lbs (0.54 kg) |
| Operating Temperature Range | 32°F to 140°F (0°C to 60°C) |
| Maximum Watering Duration per Station | 99 minutes |
| Number of Programs | 3 (A, B, C) |
| Rain Sensor Compatible | Yes (normally open or closed) |
| Manual Override | Yes (per station and all stations) |
| Watering Delay Feature | Yes (24-72 hours) |
| Backup Battery | 9V alkaline (not included) |
| Enclosure Rating | Indoor use only (or weather-resistant with optional cover) |
| Station Wiring Terminals | Common and 4 station terminals (accepts up to 14 AWG) |
| Protection Features | Fuse protection (0.5 A), surge protection |
| Maintenance | Clean with a soft, damp cloth; avoid solvents |
| Spare Parts Available | Transformer, fuses, terminal blocks |
| Certifications | UL, CSA listed |
Frequently Asked Questions - MC-4E Irritrol
How do I set the current time and day on the MC-4E?
Press the SET TIME button. Use the + and - arrows to adjust the hour, then press ENTER. Repeat for minutes and day of the week.
Can I connect a rain sensor to this controller?
Yes. Connect the rain sensor wires to the SEN and COM terminals on the controller. You can configure the sensor type (normally open or normally closed) in the settings.
What type of battery does the MC-4E use for backup?
It uses a standard 9V alkaline battery (not included) to retain programs during a power outage. Replace it once a year.
How do I program a watering schedule for one station?
Press PROGRAM to select program A, B, or C. Then press START TIME to set watering start time, STATION to choose the station, and RUN TIME to set duration (1-99 minutes). Repeat for each station.
What does the 'Rain Delay' feature do?
It temporarily stops all watering for a set period (24, 48, or 72 hours) after rain. To activate, press RAIN DELAY and use arrows to select the delay duration.
How do I manually turn on a single station?
Turn the dial to MANUAL. Use the + or - arrows to select the station, then press ENTER. The station will run for its programmed run time.
The controller display is blank. What should I do?
Check if the transformer is plugged in and the outlet has power. Also, check the fuse on the controller (0.5A 250V). If the display still doesn't work, the battery may be dead; replace it.
Can I use this controller for drip irrigation?
Yes. The MC-4E is compatible with drip systems. Ensure the station run times are set appropriately (typically longer for drip) and that the flow rate does not exceed the valve capacity.
How do I reset the controller to factory defaults?
Press and hold the RESET button (located inside the battery compartment) for 5 seconds. All programs and settings will be erased.
What is the maximum distance for valve wiring?
For wire sizes 18 AWG, the maximum distance is about 500 feet (150 m). For longer runs, use larger gauge wire (16 AWG or 14 AWG) to avoid voltage drop.
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USER MANUAL MC-4E Irritrol
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Product information
Brand : Irritrol
Model : MC-4E
Category : Controller