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Installation procedures
5)during operation of fan motor,motor overcurrent or bearing's temperation overhigh,may be caused by following reasons:
motor's airflow exceeds rating value,or duct leaks.
gas density of air transportation is too large,making large pressure.
during transport,fan impeller vibrates due to the impact of the deformation caused by external vibration.
6)Fan motor belt jumps or slips,may be generated by the following reasons:
the distance between pulley is too long or the belt is too long;
two pulley centers not in the same position with each other online, to make the belt slide
down from a lesser one;
belt worn leads too loose.
6.use and maintenance of indoor unit .
1. Should inspect regularly the tightness degree of drive belt. make timely adjustments, if necessary, belt should be replaced.
2. Daily operation, should measure the operation of fan motor current, voltage and other parameters necessary to confirm
whether or not normal, and filed for record, for future maintenance reference. If current is lower , it indicates that there air
flow is less, filter needs to be cleaned or replaced; otherwise, if the current is too large, then the air flow might be too large,
adjust the valve to enable the current return to normal .
3. Fan and motor bearings should be regularly oiled in order to enhance operational efficiency and life expectancy; periodic
inspection if seal is aging or damaged, whether fan soft joint damaged.and if it is, should replace and maintain timely.
4. The maintenance for the fan is not allowed during the unit operation.
5. after unit has operated for two years, unit should be maintained comprehensively, including the removal of the heat exchanger's
finned tube of dirt and scale.
6. According to the actual operation of units per year for regular inspection should be the following:
1) check the isolation device suspension vibration, if worn, loose or material damaged, need replace it timely;
2) check the fan bearing noise situation, whether there is excessive leakage of lubricating oil. If necessary, need replace the
bearing ;
3) check the control circuit to ensure that the connection fastening and insulation reliability;
7. In order to avoid premature failure of bearings and unnecessary belt wear, belt should maintain an appropriate degree of
tightness.
8. Unit should be managed by professionals, strictly accordance with instructions and the use of management, to strengthen
the regular maintenance, repair and overhaul, should be excluded from abnormal, unit can be continued after the exclusion of
troubleshooting. if users can not deal with the fault, please contact the Company's local service centers in order to provide
you with efficient and convenient after-sales service.
9.air filter cleaning
1.The role of air filters is to filter outer object, such as: dirt, soot, dust and other possible debris from the air. If the filter is
blocked,it not only reduces the effectiveness of the filter, but also reduce the air volume units, motor temperature rise up, if
lasts for long time, can lead to motor burn.Filter cleaning cycle should be based on the installation location and environment,
which cause dirt and the quantity of outer object.Washable yarn can filter large objects,tap the surface of the filter to remove
dirt, preferably in the cleaning agent are dissolved in the warm water cleansing. Air filters should be installed after shutter, and
easy for disassemble and re-dry thoroughly before use.
2.At least twice a year to replace filters in high-load or dirty air.undercondition of high load or dirty air, it need check the filer
more frequently.Covered with dust filters will increase air resistance, slow down the air flow and reduce cooling capacity and
to increase the energy loss .
10.Drainage pipe inspection
1.drainage pipe must be examined before unit running. If pluged, dirt must be removed in order to condensed water row pass
smoothly .
2.before winter comes, inspect and clean the drainage pipe to prevent them crack.
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