Common faults and solutions in the use of clean benches

Clean workbench is a kind of universal local purification equipment, which can create a local high cleanliness air environment equipment, clean workbench is in a specific space, clean air (filter air) according to the set direction flow and formed
.
Divided by the direction of air flow, the existing clean bench can be divided into vertical, inward-to-outside and lateral-facing types
.
Considering the quality of operation and the impact on the environment, it is compared
vertically.
The clean air supplied by the air supply filter plate descends through the operating area at a specific speed, separated in the middle of the approximate operating area, sucked away by the front air suction hole and the rear suction window, the air sucked in by the front and rear of the lower part of the operating area is mixed together, and pumped into the rear positive pressure area by the blower, in the upper part of the machine, 30% of the gas is discharged from the top through the exhaust filter plate, and about 70% of the gas re-enters the operating area
through the oxygen supply filter plate.
To replenish the air discharged from the exhaust port, the same volume of air is replenished
from the room air through the operating port.
This air does not enter the operating area, but simply forms an air barrier
.
What are the common faults in the use of the clean bench: common fault handling: First, the main power switch cannot be closed, and the automatic tripping
.
Cause of accident: The fan is stuck and the motor is blocked, or the line has a short circuit
.
Solution: Adjust the position of the fan shaft, or replace the impeller and bearing, and check whether the line is intact
.
Second, the wind speed is low
.
Cause of accident: 1.
Too much
dust accumulation in the primary filter.
2.
High efficiency filter failure
.
Solution: 1.
Clean the primary filter
.
2.
Replace the high efficiency filter
.
Third, the wind speed is low
.
Cause of accident: 1.
The contactor is not working
.
2.
The fan power core has been fused
.
Solution: 1.
Check whether the contact line is normal
.
2.
Replace the melting core
.
Fourth, the fluorescent lamp is not lit
.
Cause of accident: 1.
Lamp or relay damage
.
2.
The lamp power fuse has been fused
.
Solution: Replace the lamp or relay
.