In a filter dust collector,if the differential pressure is 0 may be the air exhaust fan is not functioning or the suction pipe is clogged.
it gets faster
By creating suction
The fan powered by a motor creates suction which pulls the dust into the cleaner nozzle (head) into the bag, filters or cyclones.
Fan regulators are similar to light dimmers. Their function is to control the speed of the fan. The regulator uses resistances for the speed of the fan. It acts as a divider and the speed changes based on the resistance.
Remember that suction refers to the low side, and is showing you what is happening with in the evaporator coil. Higher than normal pressures indicate the refrigerant is not transferring its heat into the air passing through evaporator coil. You need to assess the air flow, are the filter or coil dirty, or is the ducting blocked, fan speed set up correctly. Try cleaning coils and a light weight filter, then recheck pressures.
Downdraft systems have a suction unit (fan) mounted below the cooking surface and a vent pipe going outside. When the fan is on, the suction pulls the air containing the smoke and odors down and pushes them out the exhaust vent.
IT COULD THAT YOUR SYSTEM IS EITHER OVERCHARGED OR UNDER CHARGED. ALSO CHECK YOUR FURNACE FILTER.AND MAKE SURE YOUR OUTDOOR UNIT is clear of dirt and obstructions. --------------------------------------------------------------- There are several reasons for a compressor to overheating High compression ratios are the result of either lower than normal suction pressures or higher than normal discharge pressures. Changes in suction pressure will affect the compression ratio more rapidly than changes in the discharge pressure. For this reason, it is important to keep the suction pressure at its highest possible value. Causes of low suction pressure can include incorrect sizing of components, misadjusted or defective metering devices (TXVs), loss of refrigerant charge, plugged driers or strainers, and excessive suction line pressure drop. Although not as sensitive to change as the suction pressure, the discharge pressure can still greatly affect the compression ratio. Keeping the discharge pressure within normal operating conditions is still important. Causes of high discharge pressure can include dirty condensing coils, undersized discharge line, a blockage or recirculation of condenser air, erratic condenser fan operation, refrigerant overcharge, noncondensibles in the system, and an undersized condenser.
same as low speed relay its call fan mode
This fan has three speed settings, low, medium and high.
cpu fan speed of 3590 RPM normal(CPU 73c)
The external static pressure of a fan is the pressure measured at the discharge of the fan and includes all the duct losses from the fan until it reaches the discharge point. When measuring the external static pressure you must subtract the velocity pressure of the airstream from the total pressure measured by the gage. External static pressure is not total static pressure. Total static pressure is the difference between the external static pressure and the measured pressure at the fan inlet. If the pressure is measured at the inlet duct you must also subtract the velocity pressure from the measured pressure.