Precautions - Gree A Series Installation, Start-Up And Maintenance Manual

■ Weekly Maintenance
(1)Check the main unit, like if the compressor runs with abnormal noise, if the distribution
box is attached securely and if the pipeline generates abnormal vibration or leakage.
(2)Record key parameters, like pressure, pressure etc.
■ Quarterly Maintenance
(1)Check the electric wiring and electric insulation.
(2)Check and adjust the set point of the temperature.
■ Yearly Maintenance
(1)Check valves and pipeline of the water system. If necessary, clean the filter and
analyze the water quality. If the water circuit needs to be cleaned, please consult the
assistance of the qualified personnel.
(2)Clean the corrosive surface and paint it again, and check if the door of the electric
control cabinet is tightly closed.
(3)Check if the pipeline is secured and so the water pump and fittings. Additionally, check
if the refrigerant charge is sufficient, if not, add some.
(4)Perform the items for weekly maintenance.
(5)Check if the control device is set and acts properly.
(6)Check if the refrigerant pipe is attached securely.
(7)Check if the refrigerant pipe is attached securely.
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Precautions

(1)Take periodic maintenance to the unit to guarantee normal operation.
(2)Once refrigerant leaks, shut down the unit immediately and contact the serviceman. No
open fire is allowed in that refrigerant will decompose into toxic gas.
(3)Switch off the main power supply in case of a fire hazard and extinguish it with effective
measures.
(4)The working environment shall be far away from the inflammable substance, such as
petroleum and alcoholic etc. to avoid explosion.
(5)The unit is allowed restarted only after any malfunction is eliminated, otherwise
refrigerant or chilled water would leak, in which case, it is imperative to turn off all
switches or the main power supply.
(6)Do not short-circuit the protection device, otherwise it would cause some malfunction.
A Series Inverter Modular Air-cooled Chiller (Heat Pump)
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