1. Brake valve adjustment 1) The balance spring pre-tensioning should be 300-350N, adjust, the increase or decrease the gasket between the spring and the bushing to be adjusted. 2) The distance between the intake valve and the stem head is generally 16-16.4mm. If the distance is too small valve opening is not enough, the head can be repaired with brazed stem; if the distance is too large, the inlet valve closed lax and leaks, you can file the stem of the head. 3) exhaust valve adjustment. The distance between the exhaust valve housing and the stem head should be (4.5 ± 0.5) mm. In the adjustment, increase or decrease the exhaust valve housing and brake adjustment between the gasket, to be adjusted. 4) pedal free travel adjustment. Adjustable brake valve arm free stroke adjustment screw, the stroke of 1-3mm. Screw into the free travel reduced, and vice versa increases. 2. Brake Room Inspection and Repair 1) Brake chamber diaphragm cracks, deformation or aging loss of elasticity, it should be replaced. 2) The brake chamber spring has obvious deformation, bending, it should be replaced. Two brake chamber spring tension should be consistent, or should be adjusted. 3) Putter bending, platen on the putter loose, it should be repaired. Putting fork pin hole wear, should be surfacing repair. 4) After the brake chamber is installed, the push rod should not protrude part of more than 40mm, push rod stroke of 20-40mm. Brake room work, should be flexible movement without block phenomenon, and should not leak. 3. Wheel brake 1) brake cam, camshaft and bearing journal wear, can be surfacing after repair repair. 2) Wheel brake shoe clearance adjustment: Turn the camshaft so that the shoe top and brake hub clearance of 0.4mm. Turn the adjustment worm on the brake camshaft adjustment arm so that the clearance between the friction plate and the brake hub is reduced to 0.4 mm. When adjusting the lower end of the hoof, first loosen the shoe shaft lock nut and turn the shoe shaft until the clearance between the lower end of the shoe and the brake hub is 0.2-0.6 mm, then tighten the lock nut. More Search Keywords: Valve
Automatic Sliding Door Operators
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Safety & Operation Devices of High Speed PVC Roll up Door:
In consideration of operation safety for high speed PVC roll up door, we provide the photo cell, and wireless safety airbag device as the standard safety device; And to enrich the operation methods of the high speed door, various options are provided such as manual button, transmitter, control box, radar sensor and inductive loop device. Different styles of transparent window are also available for better vision view.
Varied Running Speed of High Speed PVC Roll up Door:
Running speed of High Speed PVC Roll up Door is adjustable: Opening speed from 0.80m/s to 2.0m/s, and closing speed from 0.6m/s to 1.0m/s. Running speed adjustment can be achieved through inverter inside the control box, t to meet the actual needs.
Driving System of High Speed PVC Roll up Door:
Driving system is the core part for the high speed roll up doors. For the motors, we can provide multiple options for different demands, brands including SEW, SIEMENS, SNMA, SEJ and Servo Motor; All the motors are provided with manual brake, that offers emergency operation under power failure. Furthermore, motor power can be applied based on the real door size, in supply voltage 220V single phase and 380V three phase.
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