This practice may result in malfunction or fire. Avoid using an extension cord, and avoid tapping into a power cord. Power Cord: Prior to repair, check the power cord and replace it if necessary. Use the proper tools: Use the proper tools and test equipment, and know how to use equipment may cause problems laterintermittent contact, for example.Ĥ. (Also, we recommend replacing parts rather than repairing them.) 3. Use proper parts: Use only exact replacement parts. Warning: Prior to repair, disconnect the power cord from the circuit breaker. Installation and Operating Instructions 4.