- Unplug kiln.
- Remove the control box and the insulation panel.
- Remove the wires to the relay.
- Remove the nuts from the studs that hold the relay in place. Remove old relay and replace with new one.
- Visually inspect the wire connectors. Do they look corroded or "cooked"? Are the wires frayed? Any corrosion on the wire itself? If any of this is questionable you should replace the appropriate wires.
- Reconnect all wires. Visually inspect to make sure the spade connectors are down as far as they can go and feel to see that they are tight (a gentle tug should not remove one). If they are loose for some reason remove the wire and slightly squeeze the spade connector with pliers to tighten it.
IMPORTANT: The slip on wire connectors cannot be loose or corroded. If there is a bad connection then heat will be generated and the component that they slip onto (relay, terminal strip, etc) may overheat and fail. If you squeeze the slip on terminal to make it tighter–be sure to squeeze it evenly so that one side is not tight and the other loose. If there are any doubts about the integrity of the wire or the connector replace the whole wire or harness.
How to check a relay in an Easy-Fire Kilns
- Similar in any L&L automatic kiln.
- Follow proper electrical safety practices.
- See this page for the 12 Volt 30 Amp relay we use for most kilns.
- See this page for the 240 Volt 30 Amp relay we use as a control relay for 480 volt kilns.
- See this page for all contactors and relays.
How to change a relay in an Easy-Fire Kilns
- Be sure to keep the wires on in the right sequence when changing a power or control relay in an Easy-Fire, Easy-Fire XT, School-Master or eQuad-Pro Kiln.
- The configuration is similar in a Jupiter panel or as control relay in a DaVinci, or Easy-Load panel.
- Make sure kiln is unplugged or locked out and tagged out at the circuit breaker or fused disconnect switch when doing this maintenance.