Induction Motors/ Generators Storage Recommendations ANIM-03114 (03/02) (Supersedes all previous issues) ©2002 Siemens Energy & Automation, Inc. All rights reserved.
Table of Contents Page Safety Procedures……………………………………………… 2 Introduction……………………………………………………… 3 Indoor Storage (Up to 5 Years) Wholly Controlled Atmosphere………………………………... Partially Controlled Atmosphere………………………………. 4 4 Outdoor Storage (Up to 5 Years) Inland Dry Climate……………………………………………….. Inland Humid Climate…………………………………………….
Safety Procedures Do not operate this equipment in excess of the values given on nameplate or contrary to the instructions contained in this manual. The equipment (or a prototype) has been factory tested and found satisfactory for the condition for which it was sold. Operating in excess of these conditions can cause stresses and strains beyond design limitations. Failure to heed this warning may result in equipment damage and possible personal injury. This equipment contains hazardous voltages.
Introduction The purpose of this booklet is to offer some short, easy to follow recommendations to our customers, users and distributors for the care of electric motors in storage. For practical purposes, such equipment is considered to be in storage not only when it is in the storeroom but also when; 1. It has been delivered to the jobsite and is awaiting installation, or 2. It has been installed but regular operation is delayed pending completion of plant construction, or 3.
Indoor Storage (Up to 5 Years) NOTE Rodents and other animals in search of warm surroundings or food, like to house inside motors. Some of them attack the insulation materials. Their access to the motor should be prevented. Wholly Controlled Atmosphere Requirements Uniform temperature between 40°F (4.5°C) and 140°F (60°C) throughout the room maintained at least 10°F (5.5°C) above the dew point. Relative humidity of 50% or less.
Outdoor Storage (Up to 5 Years) NOTE Rodents and other animals in search of warm surroundings or food, like to house inside motors. Some of them attack the insulation materials. Their access to the motor should be prevented. Inland Dry Climate Conditions Usually Encountered Dust, sand, heat from the sun, and occasional rain or snow. Requirements If the ambient temperature exceeds 140°F (60°C), the space or structure should be enclosed but ventilated. If the ambient temperature is below 40°F (4.
Outdoor Storage (Up to 5 Years) NOTE Rodents and other animals in search of warm surroundings or food, like to house inside motors. Some of them attack the insulation materials. Their access to the motor should be prevented. Inland Humid Climate: (Non Industrial Area) Conditions Usually Encountered Dust, rain, snow, organic growth (fungus). Requirements If the ambient temperature exceeds 140°F (60°C), the space or structure should be enclosed but ventilated. If the ambient temperature is below 40 °F (4.
Outdoor Storage (Up to 5 Years) NOTE Rodents and other animals in search of warm surroundings or food, like to house inside motors. Some of them attack the insulation materials. Their access to the motor should be prevented. Salty and Industrial Atmospheres Conditions Usually Encountered Moisture impregnated with salts or other chemicals, salty dust rain, snow, fungus growth, fumes, coal and chemical soot.
Preparation For Storage CAUTION Moisture. Can damage windings. Protect motor from moisture. Sleeve and Tilting Pad Bearings Motors with this type of bearing are shipped without lubricating oil. A film of rust-inhibiting oil from factory testing protects the bearing and shaft journals during shipment, but this protection does not last long enough for extended periods of storage.
Preparation For Storage Shaft Extensions and Exposed Machined Surfaces Surfaces should be coated with an easily removable rust preventive such as Tectyl No. 502-C. If the storage period will be nine months or longer and the risk of exposure to moisture is present, take the following precautions; 1. Before adding the lubricant described above, disassemble the motor taking care not to contaminate the existing lubricant or the bearing or shaft journal. 2.
Maintenance During Storage DANGER DANGER Hazardous voltage. Can cause death, severe injury, or property damage. Follow all safety rules. Rotating machinery. Can cause death or severe injury. Follow all safety rules.
Maintenance During Storage Oil Mist Lubricated Anti-Friction Bearings If motor was shipped with grease in the bearing, follow instructions for grease lubricated anti-friction bearings described above. If motor does not have grease in the bearing, start the oil mist system connected during the storage preparations, start the motor, and run it for two minutes. Repeat this process every two weeks.
Preparation For Service Cleaning Both the interior and exterior of the motor should be free of spilled oil, water, dust, and dirt. The exterior should be wiped and the interior blown out with compressed air at a reduced pressure. For machines with newer insulation systems, such as MiCLAD VPI, the insulation resistance after one (1) minute should be greater than 1000 megohms. (Values in excess of 5000 megohms are common.) Refer to the instruction book.
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Siemens Energy & Automation Industrial Products Division Norwood Motor Plant 4620 Forest Avenue Norwood, OH 45212-3396 (513) 841-3100 ANIM-03114 (03/02) (Supersedes all previous issues) ©2002 Siemens Energy & Automation, Inc. All rights reserved.
