What should the CFM of a blower be?
The goal is to increase the cfm from 3000 cfm to 4000 cfm. Changing a pulley size or making an adjustment on the motor pulley if it is adjustable will accomplish this. The most economical and practical pulley to replace is the motor pulley.
What is the running amperage of a blower?
Assume that when the technician measured the pulleys and obtained the motor information, that a motor running amperage measurement was taken. This amperage is for the original conditions with a motor pulley of 8″, a blower rpm of 875, and the 3000 cfm airflow rate. The running amperage under those conditions was found to be 16 amps.
How many amps does a 10 hp blower draw?
The 16 amps is a full 7.5 amps under the FLA rating of the motor. The FLA is the full load amps or the amperage the motor will draw if it is doing its rated horsepower worth of work. For this motor, if it is doing a full 10 HP work load, it would draw 23.5 amps, it is only drawing 16 amps. This shows there is more HP available.
What are the side effects of an air blower?
But air blowers typically rotate at 18,000 to 20,000 rpm. This high speed has two side effects: noise and a lot of heat generated within the air blower.Several manufacturers have successfully reduced noise by using sound-absorbing materials around the blowers and by adding mufflers to the intake and/or exhaust ports.
What is the flow rate of a blower?
Answer:At full speed, the blower will deliver about 8.8 cfm in this system, whose backpressure is about 7.2 in H 2O at that flow rate (see Figure 3). Since this is delivering too much, the speed must be reduced to achieve the desired operating point.
When do you need to replace a blower motor?
If you don’t feel any airflow coming out of the vents, it may mean that a problem with the blower motor has developed to the point where the component is entirely inoperable. In this case, you’ll have to replace it with a new motor.
How much power does a BG 50 blower have?
BG 50 Specifications – Occasional Use DISPLACEMENT 27.2 cc (1.66 cu. in.) ENGINE POWER 0.7 kW (0.9 bhp) WEIGHT 3.6 kg (7.9 lbs.) FUEL CAPACITY 430 cc (14.5 oz.) BLOWING FORCE* 13 Newtons
How can I tell if my blower motor is faulty?
This is usually the first indication that you may have a faulty blower motor. If the airflow coming out of the vents is weak, it can mean that your blower motor is having a hard time pushing enough air through the ducts to achieve your desired temperature.