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Hoyer HMA3 90L-2 User Manual

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40 pages
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Electric Motors
Motor Manual
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Hoyer HMA3 90L-2 Specifications

General IconGeneral
BrandHoyer
ModelHMA3 90L-2
CategoryEngine
LanguageEnglish

Summary

1 Notice

Operation Safety

Ensuring safe operation by checking for interference with the rotating shaft.

Lifting Safety

Guidelines for safely lifting motors using eyebolts, ensuring stability and control.

Transport Safety

Procedures to secure motors during transport to prevent movement and damage.

2 Ex nA/ec and tc Motors

4 Installation and Commissioning

General Installation Procedures

Steps for preparing and installing the motor, including safety checks and connections.

Support and Alignment

Ensuring proper motor mounting, alignment, and stable support to prevent vibration and failure.

Insulation Resistance Measurement

Procedure for measuring insulation resistance before commissioning.

5 Electrical Connection and Cabling

Terminal Box and Board

Description of the terminal box components and safety precautions before maintenance.

Connection Diagram and Starting

Illustrates Y/D connection types and star-delta starting for three-phase motors.

6 Thermal Protection

PTC Thermistor Protection

Details on PTC thermistors for motor overheating protection and their connection.

7.3 Permissible Bearing Loads

8 Frequency Converter Operation

VFD Bearing Deterioration

Factors influencing bearing current and deterioration when using VFDs.

8.4 Bearing Current Mitigation

9 Operation

9.4 VFD Operation

10 Maintenance

Bearing Re-greasing

Information on bearing lubrication, replacement, and re-greasing procedures.

Lubricated Bearing Lifetime and Re-greasing

Re-greasing Procedure

Step-by-step instructions for re-greasing motor bearings using grease nipples.

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