Requirements for Cleaning a Transfer Switch

Frequency

• The first requirement is that transfer switch cleaning occurs on at least an annual basis. If the particular transfer switch you have installed has the manufacturer’s instructions, these should be followed regarding how frequently maintenance should occur. Otherwise, National Fire Protection Association guidelines dictate that maintenance is performed annually.

Power

• Before you even attempt the cleaning of a transfer switch unit, you’ll need to prepare the unit to ensure it’s safe for maintenance. Failing to do so can make cleaning the unit a risky business. Remove all power to the transfer switch unit by de-energerizing any source connected to it. Once it’s safe, you can begin to inspect your transfer switch. You risk suffering an electric shock if power is still on when you access the unit.

Process

• During transfer switch maintenance, you’ll need to check the unit for any outside materials or liquids that may cause the device to malfunction. Typically, you’re looking to clean dust and dirt particles that may have accumulated over time. Sometimes, you may find liquids have contacted the transfer switch, and you’ll need to remove these, too. Be gentle, and choose a soft brush or else a dry cloth for cleaning the transfer switch. If you do need to use water to remove dirt, for example, be extremely careful with this. Alternatively, you can vacuum away dirt and dust, but avoid a blower. Using a blower can make things worse since the debris you’re aiming to remove can become clogged inside the unit itself.

Contacts

• While you’re in the process of cleaning the transfer switch, you should look to see if the contacts within are in good repair and not clogged with dirt. To check the contacts, you’ll first need to remove any arch chutes or barriers that are in the way. Then inspect the contacts for surface deposits that may impair unit operation. Remove dirt using a clean cloth. According to the GE Digital Energy website, you should avoid utilizing an emery cloth or file while performing this task.