Fault 1: Stop the water inflow when the water inflow does not reach the set water level.
Analysis and maintenance: This fault is mainly due to the poor performance of the water pressure switch, so that when the air pressure in the gas collection chamber does not reach the specified pressure, its contact will be switched from off state to on state in advance to stop water inflow.
The specific reasons and treatment methods are:
(1) The pre-compression of the water level control spring of the hydraulic switch is small. It can be solved by screwing in the adjusting screw to increase the pre-compression of the water level control spring. If the elasticity of the water level control spring becomes smaller or loses its elasticity, the water level control spring should be replaced.
(2) The groove on the cam of the water pressure switch is worn or damaged, which can only be solved by replacing the cam.
Fault 2
: The water inflow will not stop until it exceeds the set water level.
Analysis and maintenance: This phenomenon shows that when the actual water level has reached the specified height, the air pressure in the water pressure switch plenum still can't reach the specified value, and the water pressure switch will only act when the water level continues to rise.
The specific reasons and treatment methods are:
(1) The air guide joint of the water pressure switch air collection chamber is blocked or leaked. As long as the impurities at the air guide nozzle are removed; Or use 40 1 glue to seal the air leakage. If the air duct is aged, kinked, cracked and leaked, it should be replaced.
(2) The pre-pressure of the water level control spring of the water pressure switch is too large. As long as the adjusting screw is turned out a little, the pre-compression of the water level control spring can be reduced.
(3) The reversing ejector pin and transmission parts in the hydraulic switch are deformed or damaged. It can be solved by maintenance and correction, and the water pressure switch should be replaced seriously.
Fault 3: the program enters the washing state, the motor rotates normally, but the impeller does not turn.
Analysis and maintenance: This fault mostly occurs in the mechanical transmission part between the motor and the impeller.
The specific reasons and treatment methods are:
(1) The fastening screws of motor pulley, clutch pulley and impeller are loose, slipping or broken. Just re-tighten or replace the fastening screws; If the square hole of the impeller becomes round, the impeller should be replaced.
(2) The V-belt slips or falls off. As long as the distance between the motor and the clutch is properly adjusted, some rosin powder is rubbed on the V-belt to increase friction.
Just wipe it and it will be solved. If the V-belt is aged and deformed, the V-belt should be replaced.
(3) The parts of the clutch deceleration mechanism are worn or damaged, so it is generally necessary to replace the clutch assembly.
Fault 4: When washing, the dehydration barrel rotates.
Analysis and maintenance: dehydration barrel and rotation.
Firstly, the dehydration barrel rotates clockwise; Second, the dehydration barrel rotates counterclockwise.
The concrete reasons and treatment methods of clockwise rotation of dewatering barrel are as follows:
(1) The brake band is loose, which reduces the braking torque of the brake band on the dewatering shaft. Just reinstall the brake band.
(2) The brake band is seriously worn or damaged. By rotating the adjusting screw, the position of the pawl can be properly adjusted, and the brake band can be added to the dewatering shaft.
Brake torque, serious need to replace the brake band.
Specific reasons for counterclockwise rotation of dewatering barrel
The processing method is as follows:
(1) The clutch torsion spring falls off or breaks, or the torsion spring slips due to loose cooperation with the dehydration shaft.
So that the torsion spring loses its check function. As long as the torsion spring is reinstalled or replaced, the reducer should be replaced in severe cases.
(2) The clutch brake band is loose, worn or broken. Just retighten or replace the brake band.
(3) The clutch brake spring or shift fork spring is too soft or cracked. Only by replacing the clutch brake spring or the fork spring can it be solved.
Fault 5: When washing, the motor runs normally in forward and backward directions, while the impeller can only rotate in one direction, but not in forward direction.
Analysis and maintenance: the fault is that the clutch pawl fork is deformed or the adjusting screw is screwed in too deeply, so that the pawl working position cannot be in place.
The washing shaft and the dewatering shaft are not separated in the washing state.
Because the working position of the clutch pawl is not in place, the square wire clutch spring cannot be loosened.
Therefore, in the washing state, both the washing shaft and the dewatering shaft are tightly held by the clutch spring, and the dewatering shaft is tightly held by the brake band. When the clutch pulley rotates clockwise, it cannot be driven.
The impeller rotates. When the clutch pulley rotates counterclockwise, it is not only the loosening direction of the clutch square wire clutch spring, but also makes the washing shaft and
Dehydration shaft separation; It is also the direction in which the clutch button spring is tightened, and the dehydration shaft is still firmly grasped by the brake belt, and the impeller can rotate in the opposite direction at this time.
First, adjust the adjusting screw properly to make the clearance between the pawl fork and the brake lever within the normal range. If the pawl fork is deformed and damaged, it can be repaired and corrected. In severe cases, the pawl fork must be replaced to solve the problem.
Fault 6: the drainage speed is slow.
Analysis and maintenance: This fault is generally caused by incomplete opening of the drain valve or poor drainage pipeline.
The specific reasons and treatment methods are:
(1) The drain valve is blocked by sundries or the drain hose is bent and deformed.
As long as the debris in the drain valve is removed or the drain hose is replaced, it can be solved.
(2) The gap between the drainage rod and the rubber valve becomes larger, as long as the gap between the drainage rod and the rubber valve is appropriately reduced.
(3) The spring in the drain valve is too long or loses its elasticity. Just replace the inner spring.
(4) The damping of the moving core of the drainage solenoid valve is too large or the suction force becomes smaller. Remove the rust and dirt from the electromagnet, or replace the drainage solenoid valve.
Fault 7: The drainage is not clean.
Analysis and maintenance: this fault is generally caused by poor performance of hydraulic switch or air leakage in air pipeline, which makes the air pressure in the gas gathering room smaller.
When the water level in the bucket does not drop to the specified position, the contact of the water pressure switch moves ahead of time, which shortens the total drainage time, resulting in
Failure of poor drainage. Just try to find the air leak in the air pipe and seal it with 40 1 glue. If the water pressure switch is damaged, then
Replace the water pressure switch.
Fault 8: The braking time is too long after dehydration.
Analysis and maintenance: The fault is that the brake belt can't hold the brake wheel of the dewatering shaft tightly, which reduces the braking friction.
The specific reasons and treatment methods are:
(1) The brake band on the clutch is installed askew, the lining is worn or the fastening screw is loose. Just reinstall or replace the brake band.
(2) The brake spring is loose, broken or inelastic. Just reinstall or replace the brake spring.
(3) The brake lever is blocked by the pawl fork, so that the brake belt cannot tightly grasp the brake wheel of the dewatering shaft. As long as the position of the pawl fork is adjusted, repaired or replaced.
(4) The moving iron core of the electromagnet is blocked by sundries and cannot be fully extended, so that the brake lever cannot be restored to its original position. As long as the rust and dirt on the moving core of the electromagnet are removed or the electromagnet is repaired and replaced.
Fault 9: During dehydration, the vibration and noise of the dehydration barrel are loud.
Analysis and maintenance: The specific causes and treatment methods of vibration and noise of dewatering barrel are as follows:
(1) There are sundries between the dehydration barrel and the washing barrel. Just get rid of the clutter.
(2) The balance ring of the dehydration barrel is broken or leaked, which makes the dehydration barrel lose its balance function when rotating. It can be solved by replacing the balance ring.
(3) The fastening screw of the flange of the dewatering barrel is loose or broken. Just tighten or replace the flange.
(4) The dewatering bearing is seriously worn or loose. Just tighten or replace the dewatering bearing.