YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
YMGI: Your Modern Green Idea
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Air Purging and Leakage Test
1. Connect charging hose of manifold valve to charge end of low pressure valve
(both high/low pressure valves must be tightly shut).
2. Connect joint of charging hose to vacuum pump.
3. Fully open the handle of Lo manifold valve.
4. Open the vacuum pump to evacuate. At the beginning, slightly loosen joint nut of low pressure valve to check if there
is air coming inside. (If noise of vacuum pump has been changed, the reading of multimeter is 0) Then tighten the nut.
5. Keep evacuating for more than 15mins and make sure the reading of multi-meter is -1.0 X105 pa (-76cmHg).
6. Check the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the vacuum pump.
7. Leave it for one or two minutes. Make sure the pointer of the gage manifold valve remains in the same position.
8. Remove the gage manifold valve quickly from the service port of the stop valve.
9. After refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides.
10. Opening without fully opening lowers the performance and cause dangerous.
11. Tighten the cap to the service port to obtain the initial status.
12. Retighten the cap
13. Leak test
Trial Run Procedures
Before trial run, be sure to check and make sure all of the wiring and piping are correct and reliable, the stop valves are
open completely, and the air conditioner is grounded reliably.
1. Supply main power, the unit will make a short beep.
2. Turn on the air conditioner using the remote control.
In case the indoor unit ambient temperature is around 32-68°F (0-20°C) Select HEAT mode and set the
temperature to 77°F (25°C) to test HEAT operation.
In case the Indoor ambient temperature is around 68-113°F (20-45°C). Select COOL mode and set the
temperature to 61°F (16°C) to test COOL operation.
Check the following items:
Is there any abnormal noise? Does any abnormal noise or vibration occur during operation?
Are all of the lights working?
Is condensation discharged properly?
Is the noise, airflow or water drainage affecting neighboring areas?
Are there any gas leaks when connecting pipes?
Are all the function buttons on the remote working normally?
When sending a signal using the remote, does the Indoor unit make a beep?
Customer Guidance
After the installation is completed, please explain operation to the customer:
Use the Instruction Manual and explain to the customer the operation procedures, and functions of the air conditioner.
Show the customer how to remove the air filters.
Show the customer how to use the swing function, and how to control air flow on the Indoor unit.
Show the customer how to remove and replace batteries in the remote control.
The customer should read the User Instruction manual to understand the different functions of the air conditioner.
