VIVOHOME 110V 1/4 HP 3.5 CFM Single Stage Rotary Vane Air Vacuum Pump and R134a AC Manifold Gauge Set Kit Safe High Quality Durable Great Choice High Efficiency Powerful VIVOHOME 110V 1/4 HP 3.5 CFM single-stage rotary vane air vacuum pump and R134a ac manifold gauge set kit is designed for HVAC refrigeration recharging in daily life. The kit package design eliminates the trouble of looking for a suitable air pump and refrigerant pressure gauge separately. VIVOHOME rotary vane air vacuum pump has high efficiency, low noise output, and a wide range of applications, suitable for household air conditioning, automobile maintenance, refrigerator vacuum, etc Strong Durable Cooper Motor This vacuum pump is equipped with a high-quality copper motor, which can be quickly started and run stably, and does not need extra maintenance for long life. Built-In Thermal Protection The built-in fan design facilitates heat dissipation when the air pump is working and ensures its high performance. High-precision Refrigerant Meter Made of high-quality material that is durable and wear-resistant. High accuracy of reading sight-glass for easy viewing of the refrigerant flow. The built-in fan and mesh vent design facilitate heat dissipation when the air pump is working. The vacuum pump features a simple oil fill port for easy and clean change of oil. The vacuum pump base is added 4 composite rubber feet, non-slip base increases product stability. It is not recommended to use the machine continously for more than 2 hours, please let the machine rest for at least 10 minutes after 2 hours of use. Note: If the air can not be pumped for a long time, it may be because there is no oil left in the tank, so please pay attention to the oil volumn. Please make sure the machine is off when refueling. Product and Package Information Weight Capacity: 220lbs/100kg Resoution: +/-0.2oz/0.01lbs/5g Accuracy: 0.05% of reading Operation temperature range: 32F to 122F (0C to 50C) Storage temperature range: -4F to 158F (-20C to 70C) Platform size: 9.1"*9.1" Item Weight: 20.3lbs 1 x Refrigerant Charging Scale 1 x Carrying Case 1 x Manual Instruction HEAVY-DUTY VACUUM PUMP - Made of die-cast aluminum housing and a composite anti-slip rubber base, which is lightweight and durable; Perfect for those who are looking to self diagnose or recharging AC systems; It maintains air conditioning systems by efficient removing moisture before refilling the refrigerant COMFORTABLE PORTABLE DESIGN - Ergonomic grip handle is designed for superior comfort and portability; Built-in high volume cooling fan for extended use; Oil sight glass allows you to observe the oil level and quality at any time; The oil drain valve at the bottom ensures faster and more thorough emptying; 1 bottle of 500ml vacuum oil is also included MANIFOLD GAUGE SET - Manifold gauge set is designed specially to measure pressure in refrigeration equipment; Manifolds are equipped with large viewing glasses for easy viewing of refrigerant flow, and high-quality colorful pressure gauges ensure accurate readings; Portable plastic case is included COLOR-CODED HOSES - Color-coded hoses help identify the high-pressure side (red), low-pressure side (blue), and the filling hose (yellow); The hoses are made of rubber and feature a leak-proof seal design, which is very flexible, durable and not easy to damage; Perfect for maintaining R134a, R12, R22 and R502 air conditioning systems. NOT SUITABLE for R410a system PACKAGE - Package includes 1 single stage vacuum pump and gauge set; Ideal for automotive air conditioning, HVAC work, refrigeration and other applications and industrial requirements that need high vacuum pull from a compact pump