Control system 

Check the display unit is normal, and each setting parameter is correct. 

View historical alarm records, the alarm content analysis, to eliminate hidden dangers. 

Air filter 

Check the air filter, such as a serious dirty block replacement. 

Humidification system 

Check steam humidifier scaling, fouling, if any, need to remove the humidifier cleaned. 

Humidifier, check whether the three-phase humidification electrode contacts close, if there is damage, to ensure the safety of the circuit when the humidification. 

Maintenance mode to check down the water is smooth and uniform speed. 

Repair mode to inspect the drainage is unobstructed. 

Repair mode to check whether the three-phase humidification current balance, and within the normal operating range. 

Check the steam inlet is close, whether there is an air leak. 

Check the steam output is able to guarantee the room humidity. 

External condenser 

Check whether the condenser clean for cleaning required special cleaning tools to clean the outdoor condenser. 

Fan, check the fan rotation, with or without abnormal noise is normal running circuit. 

The power switch can check the outdoor cold, normal work, insulation reliability of electrical contacts are tight. 

Check the fan is working properly, the governor control of the outdoor unit is consistent with the settings, and then adjust the work environment to give, so the outdoor unit to run at their best. 

Vapor 

Check the evaporator is clean, if any dirt needed cleaning special agents to ensure that a sufficient amount of heat exchange. 

Outdoor fan 

Check the fan motor is functioning properly, and whether the abnormal noise, and the bearing is hot. 

Check the power consumption is normal. 

Electric heating 

Check the three electric heaters of the heating current and the electrical contact is normal

Check the electrical heating of the overheating protection is sensitive. 

Electric circuit 

Check the main power supply and slip phase voltage and current. 

Check all contacts, contacts are reliable, and to check instantly pull current to be tightened to ensure safe operation, the contact point. 

24V control line testing to ensure that the sensitive control. 

To detect a variety of system protection function (for example, high-pressure protection, low-voltage protection, overheat protection, water leakage sensors, phase sequence protection, etc.) to ensure the safe operation of the equipment. 

Refrigeration systems 

Check the refrigeration system operating pressure (high pressure, low pressure) is normal and to be adjusted according to the situation. Ensure the best operation. 

Check the compressor is balanced three-phase windings, winding insulation reliability. 

Superheat test, determine the systems operating efficiency to achieve the specified performance. 

The sound is normal when the compressor is working to determine the degree of lubrication. 

Drainage system 

Inspect the drainage is unobstructed. 

Maintenance work 

Restore the site to safeguard the maintenance of the status before. 

Clean up the site, leaving no residual debris and dirt. 

Fill in the service report and test report to the user at the signature confirmation. 

Our engineering department assistant archive electronic documents sent with the customer, a company organized into a field service reports.