Manufacturing / Industrial • Inspections

OSP300 Relocation Detection Unit Battery Change

Use this procedure to replace the relocation detection unit batteries while keeping at least one battery connector attached at all times.

MPM, Inc.

10/20/2026

OSP300 Relocation Detection Unit Battery Change

This procedure is used to replace the relocation detection unit batteries in the OSP300 control box. It covers powering off, swapping the battery holders one connector at a time so the unit never loses power, and avoiding an accidental relocation detection alarm.

Procedure Max Score: 7

Turn off the operation power and the main breaker.

Open the control box door.

Change the relocation detection unit batteries.

Two battery cable connectors are provided for the relocation detection unit battery holder. Change batteries while either one of the battery cable connectors are connected the relocation detection unit.

How to change relocation detection unit batteries

Remove the battery holder with no battery mounted and mount a new battery pack in the battery holder.

Attach the battery holder with a new battery pack mounted to the relocation detection unit.

Disconnect one battery connector cable of the old battery holder and connect one battery connector cable of the new battery holder.

Remove the old battery holder and the old battery pack. Attach the battery holder without battery pack to the relocation detection unit.

If the batteries are changed with all of the two battery cable connectors disconnected simultaneously while the main breaker is turned off, the relocation detection function is activated when the power is turned on again after battery change. Entering password is needed to cancel the relocation detection status. Thus, make sure to change batteries while either one of the battery cable connectors are connected to the unit. However, if the main breaker is turned on, the relocation detection function will not

Source: MPM, Inc. (Community Member)