3M 250 Troubleshooting

3M™Scotch-Weld™Polyurethane Reactive (PUR) Easy 250 Adhesive Preheater User’s Manual
6©3M 2007 January
Important
Service on this preheater should only be performed
by a qualified electrician or service person.
1. Unplug unit from electrical service.
2. Check outlet. If no power, contact qualified electrician or service
person. If outlet has power, plug the preheater into electrical service
and proceed to next step.
!WARNING
Disconnect electrical power
and make sure preheater has
cooled to room temperature
before servicing. Failure to
disconnect electrical power or
failure to allow preheater to
cool before servicing may
cause electrical shock or
burns. Read user’s manual
before servicing.
Troubleshooting
3. Check to make certain the power cord is properly connected in the
rear of the preheater.
4. a. If preheater fails to heat when ON-OFF switch is depressed in the
upper position, replace the “High Temperature Thermostat/TCO” with
replacement part #62-9865-9938-9.
4. b. If preheater fails to heat when ON-OFF switch is depressed in the
down position,replace the “Low Temperature Thermostat/TCO” with
replacements part #62-9845-9990-2.