At no time should the safety device fail and allow the operation to continue for example, if a safety switch is guarding a motor, and the safety switch fails, the motor should not be able to run.

Safety Device Lock-Outs

Some safety devices disconnect electrical energy from a circuit. The safety devices that are used in this Controller are primarily concerned with electrical power disconnection.

WARNING! Always disconnect and lockout all electrical power and pneumatic (i.e. compressed air) sources prior to servicing the 7-Pump, 50D & D Plus-Station Controller. Failure to do so may result in serious injury. No one but the person who installed the lockout may remove it.

7/50D Plus or 7/50D Controller

Chapter 2: Functional Description

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Sterling Plumbing 882.00254.00 specifications Safety Device Lock-Outs