Pneumatic/hydraulic Power Off

Pneumatic/hydraulic power off:

Break, lock, release, shout, see, do

Disconnect - push or pull a manual short circuit switch to remove upstream pressure and disconnect pneumatic/hydraulic power

Locks - all personnel lock their locks to the short circuit switch

Release - release all potentially dangerous stored or residual energy, isolate and secure

Shout - send out warning signals

Test - start the pneumatic/hydraulic equipment and confirm that it cannot start

Do - get to work



Unlock, check, shout, pass, start

Unlock - each person opens their own lock and takes it away

Check - people in safe locations; Device to be started; All locks removed

Shouting - Shouting "get out of the way" to remind others to get out of the way

On - all short circuit switches are set in the "on" position

To start the


Lock the order

1. On-site power failure

2. Use the motor control center (MCC) when there is no on-site power failure.

3. No on-site power failure /MCC, disconnect the main control circuit

4. If the main control circuit cannot be disconnected, remove the safety or unplug the power supply input line

Note: make marks to prevent confusion (operated by electricians with valid certificates)

5.-- any person who finds that the power failure device cannot be locked with the power failure device shall immediately report to the owner and assist in solving the problem