Disconnect/ Safety Switch Replacement

HVAC Power Disconnect/ Safety Switch:  Replacing damaged, corroded or malfunctioning electrical safety switches.

Every piece of HVAC equipment (i.e., package units and split systems) has to a have an electrical safety switch, or "disconnect," that is required in order to operate and safely energize or de-energize the equipment for servicing and/or repair.  We operate these switches on a normal basis during servicing, Preventative Maintenance and/or during a Due-Diligence Survey.

Not replacing these switches when they are found damaged, corroded or malfunctioning in general is extremely unsafe, and could lead to damage of life or property.

Definition: Disconnect switches work in conjunction with circuit breakers that interrupt the flow of electricity along a circuit when the current exceeds the circuit's capacity. Disconnect switches can work with AC or DC systems and are also available for single-phase and three-phase power.

Scope of Work

1.   Perform required lockout/tag out safety protocol as per NFPA70E of all high-voltage electrical circuits prior to beginning work on the existing unit.
2.   Remove and dispose of existing electrical disconnect.
3.   Furnish and install (1) New Eaton brand 60 amp, 3-pole type NEMA 3R electrical disconnect.
4.   Torque and tighten all electrical connections to manufacturer specifications.
5.   Verify voltage and proper rotation.
6.   Start up and test for proper operation prior to departure.

This article has been shared by Direct Service, Construction and Design to specifically accommodate our intended clientele.  The intent of sharing this information is to better inform the public of these general topics, expand knowledge and safety for all and provide crucial information in regard to their MEP and building systems and/or assets. It is NOT our recommendation that any article recommendations or how-to scenarios be attempted by anyone other than a qualified or competent person.