Generally, you do not have to replace a relay
unless it goes bad.
If your relay is defective, either all or part of your tanning unit will not
run. For example, if the leg of the relay that runs to your cooling fans is
burnt, your fans will not run.
Or if the leg of the relay that runs to the top of the unit is burnt, then
the top half of the lamps will not come on.
If your unit will not come on at all, first verify that you have power
coming to the bed from the breaker box. Check your breaker box first to make
sure that it hasn't been tripped.
With a voltage meter, check voltage at the tanning unit. If you have voltage
coming to the unit, but the unit will not come on, check the voltage at the
relay.
If you have voltage coming in but no voltage going out, usually you will
need to order a replacement relay.
You may want to contact a licensed electrician if you do not have a voltage
meter or are unsure on checking the voltage.
Generic
contactors that will fit most tanning beds