(A) "220V Cooling Fan" Special Considerations
1, the fan housing or grounded motor housing must be reliable, prohibit the opposite direction of rotation, given the current ban over-run, prohibit operation phase;
2, fan bearings refueling times less than 1000 hours / times, prohibits maintaining fan in operation.
(B) the receipt inspection and "220V Cooling Fan" Preparing for Installation
1, before the fan out of the box should be checked if the packaging is intact, nameplate fan meets the requirements, each comes with complete accessories are complete.
2, carefully check the "220V Cooling Fan" in transit without deformation or damage, loose fasteners or off, whether the impeller collision phenomenon, and various parts of the fan to be checked. Such as abnormal phenomena, such as the repair should be before use.
3, with the insulation resistance 500V megger between the fan housing and the motor windings, and its value should be greater than 0.5 megohms, otherwise respond to the motor windings for drying, when the drying temperature must not exceed 120 ℃.
4, various materials are ready to install the required fan, tools and venues.