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Pressure adjustment of main safety valvePressure adjustment of main safety valve
The main safety valve pressure is preadjusted at the factory should not be readjusted by the userThe main safety valve pressure is preadjusted at the factory should not be readjusted by the user
under normal conditions. The following example describes the adjustment method for a forkliftunder normal conditions. The following example describes the adjustment method for a forklift
truck with a rated load of 1600 kg:truck with a rated load of 1600 kg:
1. 1. Place a load Place a load rated at 125rated at 125% of the forklift's li% of the forklift's lifting capafting capacity (i.e. a load city (i.e. a load of 2000 kg) oof 2000 kg) onto thento the
forks in a stable manner.forks in a stable manner.
2. 2. Depress the acceDepress the accelerator pedalerator pedal fullyl fully, then operate the lift lev, then operate the lift leverer. If the forks can be lifted. If the forks can be lifted
within a height range of 0within a height range of 0––300 mm, the main safety valve pressure is correct. Otherwise300 mm, the main safety valve pressure is correct. Otherwise
adjust according to step (3).adjust according to step (3).
3. 3. If the forks cannIf the forks cannot lift the loaot lift the load off the grod off the ground, the preund, the pressure of the massure of the main safety valve in safety valve needsneeds
to be increased. To do this, remove the front floorplate, slacken off the main safety valveto be increased. To do this, remove the front floorplate, slacken off the main safety valve
lock nut, then turn the adjusting screw clockwise to increase the pressure of the mainlock nut, then turn the adjusting screw clockwise to increase the pressure of the main
safety valve. If the forks can be lifted above 300 mm, turn the adjusting screwsafety valve. If the forks can be lifted above 300 mm, turn the adjusting screw
anticlockwise to reduce the pressure of the main safety valve.anticlockwise to reduce the pressure of the main safety valve.
4. 4. Depress the acDepress the accelerator pedacelerator pedal fully and make surl fully and make sure that the forks are abe that the forks are able to lift within le to lift within aa
height range of 0height range of 0––300 mm. If this is not the case, adjust according to step (3) until the300 mm. If this is not the case, adjust according to step (3) until the
pressure meets the required lifting height range.pressure meets the required lifting height range.
Warning: the load must be placed stably and securely; once the pressure has been adjusted, itWarning: the load must be placed stably and securely; once the pressure has been adjusted, it
should not be readjusted unnecessarily.should not be readjusted unnecessarily.
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