Power plugs and cables are used to connect electrical devices to AC power. Incorrectly wired plugs prevent a machine from working properly. Plugs with loose connections or faulty contacts prevent a machine from working ...

The aim is to provide information for common proce-dures involved in diagnosing or repairing a problem. Most of these procedures are applicable to all of the fault diagnosis and repair modules. With any trouble-shooting ...

This article contains tips for the preventative maintenance of fetal doppler.

Fetal monitors document two major functions: 1) the heart rate of the fetus, and 2) the contractions of the mother. A normal fetal heart rate is between 110 to 160 beats a minute. The sound of the beat is usually strong ...

Carbon brushes transfer electric current from the motor housing to the commutator on the motor shaft. The motor shaft is stationary. The commutator spins rapidly when the motor is on. Carbon brushes are continuously worn ...

Tubing can develop holes when it is punctured. Holes allow air or liquid to leak. Holes cause machines to run inefficiently. A big hole can prevent a machine from working. Small holes waste energy. Holes are easy to find. ...