Siemens RGZESDI Accessories, Maintenance, Thermostats, Blowers if Equipped, Encoders if Equipped

ACCESSORIES

Thermostats

All RGZESDI motors are equipped with Class F normally closed ther- mostats for detection of overload conditions. The thermostat is a device that is intended to be used in the alarm or protective circuit of an RGZESDI motor. It is in direct contact with the stator coil and is useful in guarding against loss of normal ventilation air, high ambient temperature, and prolonged opera- tion of self-ventilated motors at

WARNING

Hazardous Voltages and Entanglement.

Can cause death, serious injury, or property damage.

To avoid the danger, the control circuit should be designed to prevent the automatic starting of the motor when the thermostat resets. Always de-energize all power sources and ground the equipment before maintenance. Only qualified personnel should perform maintenance.

very low speeds.

Blowers (if Equipped)

Blower motors, where supplied, must be in operation to supply cool- ing air before loading totally enclosed blower cooled (TEBC) motors. Blower should be checked for correct rotation. Air movement should be from non-drive end toward drive end of the motor.

The nameplate voltage and fre-

quency should agree with the power supply. Motors will operate successfully on line voltage within +/- 10% of the nameplate value or frequency within +/- 5%. The com- bined variation shall not exceed +/- 10%.

Wiring of Blower motor should meet the National Electric Code and local building codes.

Encoders (if Equipped)

Follow encoder instructions sup- plied with the RGZESDI motor for encoder operation and wiring.

MAINTENANCE

MAINTENANCE

Failure to properly maintain the equipment can result in severe per- sonal injury and product failure. The instructions contained herein should be carefully reviewed. understood and followed. The fol- lowing maintenance procedures should be performed regularly:

DANGER

Hazardous Voltages.

Will cause death or serious injury.

To avoid the danger, always de-energize all power sources and ground the equipment before maintenance. Only qualified personnel should perform maintenance.

1.Bearing Lubrication

2.Insulation resistance check

3.Cleaning

This checklist does not represent an exhaustive survey of mainte- nance steps necessary to ensure safe operations of the equipment.

Particular applications may require further procedures. Should further information be desired or should particular problems arise which are not covered sufficiently for the pur- chaser’s purposes, the matter should be referred to the local Siemens Sales Offices.

The use of unauthorized parts in the repair of the equipment, tam- pering by unqualified personnel, or removal or alterations of guards or conduit covers will result in danger- ous conditions which can cause severe personal injury or equipment damage. Follow all safety instruc- tions contained herein.

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