7.4 Excessive Fan Vibration Check for material buildup on the fan wheel and clean as necessary. Check for bent, broken or cracked fan blades which may cause fan imbalance. Never allow a fan to operate if the amplitude of the vibration exceeds safe limits. Contact the fan manufacture r for your fan style for this information if not included with this manual. 7.5 High Motor Temperature Check to make sure that the cooling air to the motor has not been blocked or diverted by dirty guards or similar obstacles. Check the input power for high amperage or excessive amperage draws. An increase in power requirements may indicate that some major changes in the powder system may have occurred. 7.6 High Bearing Temperatures This condition is usually caused by improper lubrication – either “over or under”. In every case, if the cause of the trouble is not easily determined only experienced personnel should examine the equipment before it put back into service. 7.7 Lubrication The manufacture r of fans and motors used in the powder booth applications may be different based on the type of powder booth purchased. Due to this variance in these fans or motors refer to the manufacture r s literature and instruction for instruction in proper lubrication intervals and procedures. 7.8 Caution Lubricate fans and motors only when they are at a standstill. Use only clean grease. Remove and replace drain plugs only when the motors are at a standstill. DO NOT mix different types of grease. 7.9 Environmental Limitations of Powder Booth Components Tubeaxial Fans
> Maximum Air Temperature: > Maximum Air Temperature:
200° F -20° F
Air Solenoid Valve
> Maximum Air Temperature: > Maximum Air Temperature:
150° F 32° F
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