$222.27 Buy It Now or Best Offer
free,30-Day Returns
Seller Store yazion30
(1221) 99.7%,
Location: Rancho Cucamonga, California
Ships to: US,
Item: 186466315885
Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
TECHTONGDA:TECHTONGDA
Type:Vacuum
MPN:160800
7CFM Dual-stage Vacuum Pump Rotary Vane Vacuum Pump 3/4HP 1720r/min 110V 60HZ The rotary vane vacuum pump is the basic equipment used to extract gas from the airtight container. It can be used alone or as the pre-pumping pump of booster pump, diffusion pump, molecular pump, maintenance pump and titanium pump. It can be used for the manufacture of electric vacuum devices, vacuum welding, printing, plastic absorption, refrigeration equipment repair and instrument matching. The dual-stage vacuum pump is small in size and light in weight, and has a large oil window for easy observation of oil volume even when adding oil. The oil mist catcher has the advantages of five-layer filtration, effective prevention of oil smoke splashing and noise reduction. Specifications: Type 2RS-3 Voltage 110V 60Hz Free air Displacement 7CFM Ultimate Vacuum 3*10-1Pa Power 3/4HP Rotating speed 1720r/min Oil Capacity 370ml Packing Size 17.7*8.1*12.2″(45*20.5*31cm) Net Weight 24.2lbs/11 kg Gross Weight 25.2lbs/11.6 kg Operating Instruction:: 1. Check the oil level and fill the oil to the center of the oil pointer when the pump is stopped. If it is too low, it will not seal the exhaust valve and affect the vacuum degree. If it is too high, it may cause fuel injection during atmospheric starting. It is normal for the oil level to rise during operation. Oil is added from the oil filling hole, and the screw plug shall be screwed on after filling. The oil should be filtered to prevent sundries from entering and blocking the oil hole. 2. The pump can be started at one time under atmospheric or any vacuum. If a solenoid valve is installed at the pump port, it should act simultaneously with the pump. 3. When the ambient temperature is too high, the temperature of the oil will increase, the viscosity will decrease, and the saturated vapor pressure will increase, which will cause the limit vacuum to decrease, especially the total pressure measured by the thermocouple. If the ventilation and heat dissipation are strengthened or the pump oil performance is improved, the limit vacuum can be improved. 4. Check the limit vacuum of the pump based on the compressed mercury vacuum gauge. If the vacuum gauge has been fully pre-pumped and calibrated, the pump temperature is stable, the pump port is directly connected with the gauge, and the limit vacuum will be reached within 30 minutes of operation. The value measured by the total pressure gauge is related to the pump oil, vacuum gauge and gauge error, sometimes the error can be even large, and can only be used as a reference. 5. If the relative temperature is high, or the extracted gas contains more condensable steam, open the gas ballast valve after connecting the extracted container, and close the gas ballast valve after 20-40 minutes of operation. Before stopping the pump, the gas ballast valve can be opened for 30 minutes without load to extend the service life of the pump oil. 6. Oil selection: the viscosity of the pump oil affects the starting power and the limit vacuum of the pump. When the viscosity is high, it is beneficial to the vacuum degree, while the starting power is higher. The saturated vapor pressure of oil at pump temperature will affect the ultimate total pressure of the pump, the lower the better. The viscosity of high-speed vacuum pump oil and 3 # diffusion pump oil is higher than that of 1 # vacuum pump oil, and the saturated vapor pressure is lower than that of 1 # vacuum pump oil, but the price of 3 # diffusion pump oil is higher. The specific oil to be selected can be selected according to the above introduction and the specific use requirements. (1) In general, the high-speed vacuum pump oil made in Shanghai should be used where the total pressure is expected to be more than 6X10-2. Small pumps below 4L/s can also be replaced by 1 # vacuum pump, and direct-connected pumps above 8L/s can be replaced by 3 # diffusion pump. (2) If the requirements for vacuum degree are not high, and the oil is polluted and replaced frequently, and the vacuum pump oil supply is difficult, No. 50 machine oil can be used instead. (3) If the ambient temperature is low, it is difficult to start, and the limit vacuum requirement is not high, the real pump oil or mechanical oil with lower viscosity can be used. Item Number: 110V 7CFM Vacuum Pump 160800 Shipping & Handling Details Default Shipping Cost or Free Shipping Information: ▲ Default shipping cost or free shipping service is only for the lower 48 United States by UPS Ground or USPS. Other areas or needs other shipping ways, please contact us. ▲ Buyers from Guam, Puerto Rico, Virgin Islands, American Samoa, Alaska, Hawaii, PO Boxes, APO/FPO addresses or other countries/areas, there WILL be extra shipping costs, please contact us for more detailed information. ▲ Please make sure your address is valid for both UPS and USPS services. Any costs incurred because of incorrect or undeliverable address should be undertaken by buyer. HandlingTime: Shipping is usually made in 1-3 business days after payments cleared. Orders are processed from Monday-Friday; Not on the weekends & public holidays. Sales tax/Customs duties: Any sales taxes or Customs duties are not included. If came out, they must be undertaken by the buyer. Damage In Shipping: Email or call us First! We will work with you to get the case resolved in the fastest method. Return / Refund If you are not 100% happy with your purchase, please contact Us. Please don’t directly opened a request or case without informing us, or else, we will do some discounts on the warranty and other sales-services later on. Hope for your understanding. Returns & Exchanges ▲ All returns must be made within 30 days of delivery date. Items must be in new, unused condition, with all original materials included with the shipment. A partial refund may be applied for opened or damaged items, depending on the condition. ▲ Items returned under the buyer’s remorse: The return shipping fee must be covered by the buyer; The original shipping cost will also be deducted from the refund. 15% restocking fee of the items purchase price will be charged. ▲ Returns that are the result of our seller’s error: Buyer will receive a full refund of the item as well as shipping charges ▲ All returns require a RA (Return Authorization) number that will be given by our seller. Please contact with us at first for more details. Defective & Damaged Products ▲ If product was received damaged or not as described, please send us some pictures or videos, so we could well understand your problem, then solve them for you ASAP. Besides, it’s much helpful for us to claim with UPS, remind our related department to pay much more attention to packaging later on. Hope for your understanding. ▲ Replacement or refund of defective or damaged products can only be returned in exchange for the exact same product, or else, the purchase price will be refunded back to your original payment method. ▲ If an item is received damaged, customer service must be contacted within 7 days of receiving your item. All returns require a RA (Return Authorization) number as above. Warranty & Feedback ▲ 6 months’ warranty for the machines, not for the consumables. We stand behind our products all the item, so even if your warranty period has expired, you can still seek for service or technical support from us with low cost. ▲ Any warranty shipping cost to us is responsible by buyer. ▲ Any shipping cost to buyer is responsible by the seller. ▲ We committee to the customer satisfaction and want to bring you the best purchase experience. If there is any problems, please contact us ASAP. If not, please leave us a positive feedback as it’s very important for us. Thanks very much. On May 29, 2024 at 18:54:46 PDT, seller added the following information:
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