1. សេចក្តីផ្តើម
This manual provides detailed instructions for the installation, programming, and operation of your johgee HCT-379 4-Output Digital Irrigation Computer. This device is designed to automate watering for various applications, including gardens, lawns, and greenhouses, offering flexible and independent control over four separate watering zones.

Image: The johgee HCT-379 irrigation computer highlighting its key features.
2. ព័ត៌មានសុវត្ថិភាព
- Ensure the device is installed securely to prevent accidental detachment.
- Do not submerge the device in water. While it is IPX5 waterproof, prolonged submersion can cause damage.
- ប្រើតែថ្មអាល់កាឡាំង AA ទំហំ 1.5V ប៉ុណ្ណោះ។ កុំលាយថ្មចាស់ និងថ្មថ្មី ឬប្រភេទថ្មផ្សេងៗគ្នា។
- Keep the device out of reach of children and pets to prevent unintended operation.
- Disconnect the device from the faucet and store it indoors during freezing temperatures to prevent damage.
3. មាតិកាកញ្ចប់
ផ្ទៀងផ្ទាត់ថាធាតុទាំងអស់មាននៅក្នុងកញ្ចប់៖
- johgee HCT-379 4-Output Digital Irrigation Computer
- សៀវភៅណែនាំអ្នកប្រើប្រាស់
- Standard faucet connector (typically 3/4 inch)
- Additional adapters/seals (if included)
4. ផលិតផលលើសview
The johgee HCT-379 features a large LCD display and intuitive controls for easy programming. It includes four independently controlled outlets for versatile watering.

រូបភាព៖ ខាងមុខ view of the irrigation computer with display labels.
សមាសធាតុសំខាន់ៗ៖
- អេក្រង់ LCD៖ Shows current time, program settings, and status.
- ប៊ូតុងបញ្ជា៖ For navigation, setting values, and mode selection (NOW, ABCD, ESC/OFF, OK, +, -, DELAY).
- Faucet Connector: Top inlet for connecting to a standard outdoor faucet.
- Four Independent Outlets (A, B, C, D): Bottom outlets for connecting hoses to different watering zones.
- ប្រអប់ដាក់ថ្ម៖ Located at the back, secured with a sealed cover.
5. រៀបចំ
5.1. ការដំឡើងថ្ម
- កំណត់ទីតាំងប្រអប់ថ្មនៅខាងក្រោយឧបករណ៍។
- បើកគម្របថ្មដែលបិទជិត។
- Insert two (2) new 1.5V AA alkaline batteries, ensuring correct polarity (+/-).
- Securely close the battery cover to maintain the IPX5 waterproof rating.

Image: Steps for battery insertion and device installation.
5.2. Connecting to the Faucet
- Ensure your outdoor faucet is turned off.
- Thread the top connector of the irrigation computer onto your faucet. Hand-tighten until secure. Do not overtighten.
- Turn on your faucet fully to ensure adequate water pressure to the timer.
5.3. Connecting Hoses to Outlets
- Attach your garden hoses or irrigation lines to the four independent outlets (A, B, C, D) at the bottom of the device.
- ត្រូវប្រាកដថាការតភ្ជាប់ទាំងអស់គឺតឹងដើម្បីការពារការលេចធ្លាយ។
6. សេចក្តីណែនាំប្រតិបត្តិការ
២.២. ការយល់ដឹងអំពីការបង្ហាញ
The LCD display provides all necessary information for programming and monitoring. Familiarize yourself with the indicators:
- ឥឡូវនេះ៖ ពេលបច្ចុប្បន្ន។
- ABCD: Indicates which output zone(s) are currently selected or being programmed.
- ម៉ោងចាប់ផ្តើម៖ The programmed time for watering to begin.
- រយៈពេលប៉ុន្មាន៖ The duration of watering for a selected zone (1 second to 360 minutes).
- ជាញឹកញាប់: The frequency of watering (1 hour to 23 hours, or 1 day to 15 days).
- NEXT START: Time remaining until the next scheduled watering cycle.
- សូចនាករថ្ម៖ បង្ហាញអាយុកាលថ្មដែលនៅសល់។
- រូបតំណាងចាក់សោកុមារ៖ បង្ហាញថាតើសោរកុមារសកម្មឬអត់។
- Rain Delay Icon: Indicates if rain delay is active.
៦.២. ការកំណត់ពេលវេលាបច្ចុប្បន្ន
- ចុច ឥឡូវនេះ button. The current time will flash.
- ប្រើ + និង - ប៊ូតុងដើម្បីលៃតម្រូវម៉ោង។
- ចុច OK to confirm the hour and move to minutes.
- ប្រើ + និង - ប៊ូតុងដើម្បីកែតម្រូវនាទី។
- ចុច OK to save the current time.
6.3. Programming Watering Schedules (Zones A, B, C, D)
Each of the four outlets can be programmed independently.
- ចុច ABCD button to select the zone you wish to program (A, B, C, or D). The selected zone will flash.
- ចុច OK to enter programming mode for that zone.
- កំណត់ពេលវេលាចាប់ផ្តើម៖ The 'START TIME' will flash. Use + និង - ដើម្បីកែតម្រូវម៉ោង បន្ទាប់មក OK to confirm and move to minutes. Adjust minutes and press OK.
- កំណត់រយៈពេលស្រោចទឹក ('រយៈពេលប៉ុន្មាន'): The 'HOW LONG' value will flash. Use + និង - to set the watering duration from 1 second to 360 minutes. Press OK.
- កំណត់ភាពញឹកញាប់នៃការស្រោចទឹក ('ញឹកញាប់ប៉ុណ្ណា'): The 'HOW OFTEN' value will flash. Use + និង - to set the frequency from 1 hour to 23 hours, or 1 day to 15 days. Press OK to save the program for the selected zone.
- Repeat steps 1-5 for each zone (A, B, C, D) you wish to program.

Image: Programming options for watering duration and frequency across multiple zones.
៥.១. របៀបស្រោចទឹកដោយដៃ
This mode allows immediate watering without affecting your programmed schedules.
- ចុច water faucet icon button (usually labeled with a faucet symbol).
- ប្រើ ABCD button to select the desired output zone(s) for manual watering.
- ប្រើ + និង - buttons to set the manual watering duration.
- ចុច OK to start manual watering. The selected zone(s) will begin watering for the set duration.
- To stop manual watering prematurely, press the water faucet icon button ម្តងទៀតឬ ESC/បិទ.

Image: Activating manual watering mode.
6.5. របៀបពន្យាពេលភ្លៀង
The device does not have an automatic rain sensor. Rain delay must be activated manually to pause scheduled watering during rainfall.
- ចុចឱ្យជាប់ ពន្យាពេល ប៊ូតុងសម្រាប់ 3 វិនាទី។
- ប្រើ + និង - buttons to select the desired delay duration (e.g., 24 hours, 48 hours, 72 hours).
- ចុច OK to confirm. The rain delay icon will appear on the display, and all programmed watering cycles will be paused for the selected duration.
- To cancel rain delay, press and hold the ពន្យាពេល button again for 3 seconds, then set the delay to '0' or press ESC/បិទ.

Image: Rain delay mode activated on the irrigation computer.
6.6. មុខងារចាក់សោកុមារ
To prevent accidental changes to your settings, activate the child lock.
- ចុចឱ្យជាប់ lock icon button for 3 seconds. The lock icon will appear on the display.
- ដើម្បីដោះសោ ចុចឱ្យជាប់ lock icon button again for 3 seconds. The lock icon will disappear.
6.7. Manual Valve Operation (Video Demonstration)
This video demonstrates how to manually open and close the valves on the irrigation computer.
Video: Demonstration of manually opening and closing the valves on the johgee HCT-379 irrigation computer. This shows how to test water flow through each output.
7. ការថែទាំ
7.1. ការសម្អាត
- ជូតផ្នែកខាងក្រៅរបស់ឧបករណ៍ដោយទន់ ឃamp ក្រណាត់។ កុំប្រើសារធាតុសម្អាត ឬសារធាតុរំលាយ។
- Periodically check the filter screen in the faucet connector for debris and clean if necessary to maintain optimal water flow.
7.2. ការផ្ទុករដូវរងា
- Before the first frost, disconnect the irrigation computer from the faucet and hoses.
- Remove the batteries to prevent corrosion.
- Store the device in a dry, frost-free location indoors.
8. ការដោះស្រាយបញ្ហា
| បញ្ហា | មូលហេតុដែលអាចកើតមាន | ដំណោះស្រាយ |
|---|---|---|
| គ្មានលំហូរទឹក។ | Faucet is off; low water pressure; clogged filter; dead batteries. | Ensure faucet is fully open; check water supply; clean filter; replace batteries. |
| ឧបករណ៍មិនបើក | ថ្មងាប់ ឬដំឡើងមិនត្រឹមត្រូវ។ | ប្តូរថ្ម ធានាប៉ូលត្រឹមត្រូវ។ |
| ការលេចធ្លាយពីទំនាក់ទំនង | Loose connections; worn out washers/seals. | Tighten all connections; replace rubber washers if damaged. |
| Programs not running | Incorrect programming; rain delay active; child lock active. | Review programming steps; deactivate rain delay; deactivate child lock. |
| ការបង្ហាញគឺស្រអាប់ ឬទទេ | ថាមពលថ្មទាប។ | ជំនួសថ្ម។ |
9. លក្ខណៈបច្ចេកទេស
- ម៉ូដែល៖ HCT-379
- ម៉ាក៖ ចូជី
- ចំនួនលទ្ធផល៖ 4 (independently controlled)
- រយៈពេលស្រោចទឹក៖ 1 វិនាទីទៅ 360 នាទី។
- ភាពញឹកញាប់នៃការស្រោចទឹក៖ ១ ម៉ោង ទៅ ១៥ ថ្ងៃ
- ប្រភពថាមពល៖ ថ្មអាល់កាឡាំង AA ចំនួន 2 x 1.5V (មិនរួមបញ្ចូល)
- ការវាយតម្លៃមិនជ្រាបទឹក៖ IPX5
- សម្ភារៈ៖ Reinforced Nylon Fiber
- ទំហំផលិតផល៖ 14.2 x 16.4 x 7.4 សង់ទីម៉ែត្រ
- ទម្ងន់៖ ២១៩ ក្រាម។
10. ការធានា និងការគាំទ្រ
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official johgee webគេហទំព័រ។ រក្សាបង្កាន់ដៃទិញរបស់អ្នកជាភស្តុតាងនៃការទិញ។