مقدمة
This instruction manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your VEVOR 3 CFM 1/4 HP Single Stage HVAC Vacuum Pump. Please read this manual thoroughly before using the product and retain it for future reference. This vacuum pump is designed for various applications including HVAC system evacuation, refrigeration, and automotive air conditioning maintenance.

Figure 1: VEVOR 3 CFM Vacuum Pump with Manifold Gauge Kit in typical applications.
تعليمات السلامة الهامة
اتبع دائمًا احتياطات السلامة الأساسية عند استخدام الأجهزة الكهربائية لتقليل خطر الحريق والصدمة الكهربائية والإصابة الشخصية.
- اقرأ جميع التعليمات: Familiarize yourself with the product's operation and safety guidelines.
- السلامة الكهربائية: تأكد من أن مصدر الطاقة يطابق المجلدtage specified on the pump's label. Do not operate the pump with a damaged cord or plug. Avoid using extension cords unless absolutely necessary and ensure they are rated for the pump's power requirements.
- تهوية: Operate the pump in a well-ventilated area to prevent overheating and accumulation of refrigerant vapors.
- معدات الحماية الشخصية (PPE): Always wear safety glasses and gloves when handling refrigerants or operating the vacuum pump.
- التعامل مع المبردات: Be aware of the specific safety requirements for the refrigerants you are working with. Some refrigerants are flammable or toxic.
- مستوى الزيت: Regularly check the oil level and ensure it is within the specified range before and during operation. Operating without sufficient oil can damage the pump.
- الأسطح الساخنة: The pump motor and housing may become hot during operation. Avoid direct contact.
- استقرار: Place the pump on a stable, level surface to prevent tipping.
- الأطفال والحيوانات الأليفة: احتفظ بالأطفال والحيوانات الأليفة بعيدًا عن منطقة التشغيل.
محتويات الحزمة
Verify that all items are present and undamaged upon unpacking. If any parts are missing or damaged, contact VEVOR customer service.
- 1 x VEVOR 3 CFM 1/4 HP Single Stagه مضخة فراغ
- 1 x Multifunctional Manifold Gauge Set
- 3 x Color-Coded Hoses (Yellow, Blue, Red)
- 2 x Adjustable Quick Couplers
- 1 x Bottle of Vacuum Pump Oil (Note: Oil may be shipped separately or not included depending on region/regulations)
- 1 × دليل التعليمات

Figure 2: Included components of the VEVOR Vacuum Pump Kit.
مميزات المنتج
The VEVOR 3 CFM 1/4 HP Single Stage HVAC Vacuum Pump is engineered for reliable performance and durability.
- كفاءة عالية: Features a 3 CFM (85 L/min) flow rate and 1/4 HP motor for quick and effective vacuuming.
- بناء متين: Equipped with a robust die-cast aluminum housing and a strong copper motor for extended service life.
- تشغيل مستقر: Four rubber feet provide enhanced stability and minimize vibration during use.
- Anti-Oil Reflux Design: Prevents oil from flowing back into the system, protecting connected equipment.
- تبديد الحرارة بكفاءة: Enlarged heat-sink holes and a cooling fan ensure rapid heat dissipation, preventing overheating.
- Oil Sight Window: A clear oil sight window allows for easy monitoring of oil levels and quality.
- Multifunctional Manifold Gauge: Includes a two-valve manifold gauge set with clear pressure readings for precise system monitoring.
- Color-Coded Hoses: Three durable, color-coded hoses (yellow, blue, red) with SAE 1/4" (6.35 mm) brass fittings for easy identification and connection.

Figure 3: Key features of the VEVOR Vacuum Pump, including copper motor and aluminum housing.

Figure 4: Oil sight window and heat dissipation features.
تحديد
| المعلمة | قيمة |
|---|---|
| نموذج | ار اس-1 |
| المجلدtage | 220 فولت 50 هرتز |
| Flow Rate (Air Displacement) | 3 قدم مكعب في الدقيقة (85 لتر/الدقيقة) |
| قوة | 1 / 4 HP |
| الفراغ النهائي | 5 باسكال |
| Stage | 1 |
| سعة الزيت | 220 مل |
| مقياس المنوع | 2-الطريق |
| حجم وصلة الخرطوم | SAE 1/4" (6.35 mm) |
| High Pressure (Manifold Gauge) | 0~800 رطل/بوصة مربعة |
| Low Pressure (Manifold Gauge) | 0~500 رطل/بوصة مربعة |
| Max Working Pressure (Hose) | 800 رطل/بوصة مربعة |
| Hose Burst Pressure | 4000 رطل/بوصة مربعة |
| أبعاد المنتج (الطول × العرض × الارتفاع) | 10.9 x 24.4 x 21.1 cm (4.3 x 9.6 x 8.3 inches) |
| وزن المنتج | 7.32 كجم (16.14 رطل) |

Figure 5: Product dimensions and typical applications.
يثبت
Follow these steps for initial setup before operating the vacuum pump.
- فك التعبئة والتفتيش: أزل جميع المكونات من العبوة بعناية. افحصها بحثًا عن أي ضرر ناتج عن الشحن.
- Add Vacuum Pump Oil:
- Locate the oil fill cap on top of the pump.
- Remove the cap and slowly pour the provided vacuum pump oil into the reservoir.
- Monitor the oil level through the oil sight window. Fill until the oil level is between the 'MIN' and 'MAX' marks. Do not overfill.
- أعد تركيب غطاء تعبئة الزيت بشكل آمن.

Figure 6: Oil sight window with MIN/MAX indicators.
- الموقع: Place the vacuum pump on a firm, level, and dry surface. Ensure adequate ventilation around the pump.
- التوصيل الكهربائي: Connect the power cord to a grounded electrical outlet that matches the pump's voltagالمتطلبات.
تعليمات التشغيل
This section outlines the general procedure for using the vacuum pump with the manifold gauge set for HVAC/refrigeration systems. Always refer to the specific service manual for the equipment you are working on.
- إعداد النظام: Ensure the HVAC/refrigeration system is depressurized and all service ports are accessible.
- Connect Manifold Gauge:
- Connect the blue hose (low pressure) to the low-side service port of the system.
- Connect the red hose (high pressure) to the high-side service port of the system.
- Connect the yellow hose (service hose) from the manifold gauge's central port to the vacuum pump's inlet port.

Figure 7: Manifold gauge connections diagram.

Figure 8: Color-coded hoses connected to an HVAC unit.
- Open Manifold Valves: Fully open both the high-side and low-side valves on the manifold gauge set.
- Start Vacuum Pump: Turn on the vacuum pump. The pump will begin to evacuate air and moisture from the system.
- مراقبة الفراغ: Observe the low-pressure gauge on the manifold. The needle should drop into the vacuum range. Continue running the pump until the desired vacuum level is achieved, typically for a specified duration based on system size and conditions.
- Isolate Pump: Once the desired vacuum is reached, close both the high-side and low-side valves on the manifold gauge set. Then, turn off the vacuum pump.
- Vacuum Hold Test: Allow the system to sit under vacuum for a period (e.g., 15-30 minutes) and monitor the gauge. If the vacuum holds steady, the system is leak-free. If the pressure rises, there may be a leak that needs to be addressed.
- قطع الاتصال: After a successful vacuum hold test, slowly open the manifold valves to release the vacuum from the hoses, then disconnect the hoses from the system and the pump.
صيانة
Regular maintenance ensures optimal performance and extends the lifespan of your vacuum pump.
- تغيير الزيت: Vacuum pump oil should be changed regularly, especially if it appears cloudy, discolored, or contaminated.
- To Change Oil:
- Ensure the pump is off and cool.
- Place a suitable container under the oil drain plug (usually located at the bottom or side of the pump).
- Remove the oil drain plug and the oil fill cap to allow the old oil to drain completely.
- Replace the drain plug and refill with new, clean vacuum pump oil as described in the 'Setup' section.
- تنظيف: Keep the exterior of the pump clean and free of dust and debris. Ensure the cooling fins and fan area are clear for proper airflow.
- تخزين: When not in use, store the pump in a dry, clean environment. Ensure the oil is at the correct level before storing for extended periods.
استكشاف الأخطاء وإصلاحها
راجع هذا القسم للتعرف على المشكلات الشائعة وحلولها المحتملة.
| مشكلة | السبب المحتمل | حل |
|---|---|---|
| المضخة لا تعمل | لا يوجد مصدر للطاقة سلك الطاقة/القابس التالف الزائد المحرك | تحقق من اتصال ومخرج الطاقة Inspect cord/plug for damage; replace if necessary اترك المحرك ليبرد؛ وتأكد من عدم وجود أي عوائق. |
| Pump runs but does not pull vacuum | مستوى الزيت منخفض زيت ملوث Leaky connections System leak | أضف الزيت إلى المستوى الصحيح تغيير الزيت قم بربط جميع وصلات الخرطوم Perform leak detection on the system |
| المضخة تصدر ضجيجاً أو تهتز بشكل مفرط | مستوى الزيت منخفض زيت ملوث سطح غير مستقر الضرر الداخلي | فحص وإضافة الزيت تغيير الزيت Place pump on a stable, level surface Contact VEVOR support |
| Oil appears milky or cloudy | تلوث الرطوبة | Change oil immediately; ensure system is dry before vacuuming |
الضمان والدعم
صُممت منتجات VEVOR لتدوم طويلاً وتؤدي أداءً متميزًا. للاطلاع على معلومات الضمان بالتفصيل، يُرجى الرجوع إلى بطاقة الضمان المرفقة مع المنتج أو زيارة موقع VEVOR الرسمي. website. If you encounter any issues or require technical assistance, please contact VEVOR customer support through their official channels. Provide your product model number (RS-1) and purchase details for efficient service.

Figure 9: Extensive applications of the VEVOR Vacuum Pump.