(1) Human factors. A considerable number of users are randomly equipped with another motor to drive the original motor, resulting in low flow, low lift or no oil.
(2) The belt is worn. There are many large-scale hot oil pumps that use belt transmission. Due to long-term use, the belt is worn out and slacks, resulting in slipping, which reduces the speed of the hot oil pump.
(3) Improper installation. The center distance between the two pulleys is too small or the two shafts are not parallel. The transmission belt is tightly mounted to the top, so that the wrap angle is too small, the calculation of the diameter of the two pulleys is large, and the eccentricity of the two-axis of the hot oil pump of the coupling transmission is large. Causes the change of the speed of the hot oil pump.
(4) Mechanical failure of the hot oil pump itself. The impeller and the pump shaft fastening nut are loose or the pump shaft is deformed and bent, causing the impeller to move more, directly rubbing against the pump body, or the bearing is damaged, and the rotation speed of the hot oil pump may be lowered.
(5) Power machine maintenance is not working. The motor is de-excited due to the burning of the windings. The number of winding turns, the wire diameter, the wiring method change during maintenance, or the failure to completely eliminate the fault during maintenance will also change the speed of the hot oil pump.
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Label: hot oil pump speed is too low
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Industrial sectional doors are the most durable and longest lasting doors to ensure circulation at the areas of the factory entrance and exit of goods, loading and unloading areas.
The body of sectional door is forming by 40 mm sandwich panels. These panels provides sound and heat insulation due to the intense doped polyurethane insulation was injected between galvanized steel sheet. (50 kg/m3).
Industrial sectional door systems provide space-saving with opening parallel to the ceiling.Any opening can be used clearly . and produces in accordance with the transition range and the height in the factory buildings or warehouses.
Doors is working sliding by be the most appropriate the gap between the top level of the gate with a ceiling height within the side rasils. The door can be mounted in different ways according to the gap distance (standard, low, highlift and vertical track systems).
Industrial sectional doors can easily be opened automaticly by 230-380 V-AC/50 Hz electric motor or manualy thanks to torsion spring system that balances the weight of the door.The galvanized springs are made to be durable of 25.000 door cycles.Motor with emergency chain All the drive systems have a mechanical back-up system fitted to the reduction gearbox of the electric motor, so that the sectional door can be opened if the power fails. The reduction gearbox can then be powered using the chain.
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