1. In normal working condition, be sure to cut off the power before opening the explosion-proof operation box! Otherwise, property or personal injury may occur. If electricity needs to be turned on with the front cover of the explosion-proof display cabinet opened, the site's risk factors should be eliminated in advance (ie, the site should be temporarily a safe area).

2. Read this manual carefully before wiring.

3. The wiring should be done by a qualified professional.

4. In the explosion-proof operation box, the connection cables from the instrument installation chamber to the wiring chamber should be reliably sealed by the joint between the chambers.

5. Explosion-proof operation box and external connection lead out from the terminal block in the wiring chamber, and shall be connected to the outside through the four sealed joints at the lower part of the explosion-proof display box. The external connection of the explosion-proof operation box shall meet the explosion-proof specification requirements. For unused sealing joints, use a random carry metal plug (metal disc) to seal it.

6. The enclosure of the explosion-proof operation box should be reliably connected with the grounding pile located in the safety zone. The grounding resistance should not exceed 4 ohms, and the resistance of the connection cable should not exceed 1 ohm.

Locking plates engage a keyway in a shaft or adapter sleeve and are attached to the side face of the nut by two bolts secured with locking wire. 

A locking plate consists of a plate, two hexagonal head bolts with drilled heads and lock wire to secure them 

Spacers are the small parts inserted in-between the two bearings of your skate wheel axles. They take care of the coherence between the two bearings, in order to optimize the matching and synchronization of their rotation. The bearings lean on them when tightened.
The most common model is shown on the 3D diagram below (in blue): a floating collar spacer with an axle of 8 mm.

Locking Spacer

Locking Spacer,Bearing Locking Spacer,Locking Headset Spacer,Wheel Spacer Locking

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