Maintenance and Troubleshooting
Maintenance and Troubleshooting
Maintenance:
Parts
Inspection and maintenance procedures
3-6 months
12 months
Unit assembly and the shell
Check for mechanical damage and the outside water. Required internal and external cleaning crew.
Check for mechanical damage. Required internal and external cleaning crew.
Blower fan and regeneration treatment
Check for mechanical damage, clean the motor and fan housing.
Check the motor terminals, to ensure that wiring is not loose. Check whether the fan impeller damage. Check the damper to adjust air flow as required.
Wheel drive motor and reducer
Check the wheel drive motor location is appropriate and whether the drive sprocket meshing with the wheel in place.
Check the electrical wiring and make sure no loose connections, check for damage and signs of overheating. Add oil.
Cabinet and wiring
Check the cabinet in the availability of components and wiring damage and signs of overheating.
Ensure that no loose wiring.
Check the cabinet in the availability of components and wiring damage and signs of overheating.
Ensure that no loose wiring. Clear in all parts of the debris and dust.
Regeneration Heater
Stuck in the heater clear of debris and dust on the bilge.
Check all piping, wiring and control components for loose, if loose, it should be tightened. Stuck in the heater clear of debris and dust on the bilge.
Desiccant wheel
Check for signs of wear and clogging, remove wheel surface with a vacuum cleaner dust.
Check for signs of overheating and clogging. Wheel with the surface of the vacuum cleaner dust.
Seal
Check for signs of damage and displacement. If there is wear or damage, should be replaced.
Check for signs of damage and displacement. If there is wear or damage, should be replaced.
Duct
Check for air leaks and the connection with the unit is normal.
Check for air leaks and the connection with the unit is normal.
Check whether the dust and damage the internal
Condensing unit
Coolers and condensers clean the surface of the dust, check the cooling pipe.
Coolers and condensers clean the surface of the dust, check the cooling pipe, check the compressor performance.
Troubleshooting:
Fault
Possible Cause
Remedy
Unit not working
Power failure
Re-power
Action phase sequence protection
Advice from an electrician
Compressor does not work
Thermal relay
Check the compressor overload causes, manual reset, start again.
Safety Protection Action
Check the compressor protection reasons and to remove, start again.
Poor cooling effect
Evaporator or condenser fouling
Cleaning to improve air flow conditions
Handling excessive wind
Adjust the air flow to the rated range of treatment
Insufficient refrigerant
Check the leak, add refrigerant
Near the mouth of the inlet or exhaust obstructions at
Remove obstacles
Inappropriate expansion valve opening
Adjusting the expansion valve opening
Dry or liquid line filter plugging
Washing lines, change the filter drying
Regeneration temperature over temperature
Regeneration pipe plug
Check and clean renewable pipeline,
Regenerative blower stopped
Check and reset the thermal relay
The air temperature is too high
Cooling temperature
Adjust the cooling capacity
Regeneration air temperature is too low
Burning or electric instrument control rod failure
Air volume is too small or too large renewable wind
Adjust the corresponding valve valve
System, poor insulation
Check and repair
Desiccant wheel is bad or broken seal
Check and repair
The air humidity is too high
Desiccant wheel stopped
Check and repair
Too dirty, or failure of desiccant wheel
Clean or replace with a vacuum cleaner
Poor refrigeration
Condensing unit maintenance