What should an operator do before removing a service meter where no yoke is used?

Before removing a service meter where no yoke is used, installing a jumper wire is essential. The reason for this is that a yoke typically allows for continuous water flow while the meter is being serviced or replaced. In cases where a yoke is not present, the installation of a jumper wire serves to bypass the meter temporarily. This ensures that water service remains continuous during the removal process and prevents disruptions to the customers relying on that service.

The jumper wire effectively maintains the flow of water, allowing the system to remain operational while the work on the meter is being conducted. This is especially crucial in systems where maintaining water pressure and flow is vital for the integrity of the water distribution network and customer service.

Thus, the correct action to take directly relates to maintaining system functionality while safely performing maintenance on the meter without introducing undue pressure or flow issues that could cause system complications.