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5CSL0-06B
2.9 Trial test run operation
2.9.1 Test run procedure
Check the following before turning power on
Wrong power wiring , loosed screws
Wrong control transmission wiring , loose screws
Piping size , presence of thermal insulation
Measurement of main power circuit insulation
Addition or refrigerant if required
Fully open respective stop valves on liquid, gas
Turn on outdoor unit power
Use a mega-tester
Be sure to record the additional
quantity of refrigerant
2.9.2 Evaluation performance
Evaluation of the performance
Operate unit for 15~20 minutes, then check the system
refrigerant charge:
1. Measure the pressure of the gas side service valve.
2. Measure the temperature of the intake and discharge of air.
3. Ensure the difference between the intake temperature
and the discharge is more than 8°C
4. For reference, the gas side pressure of optimum condition
is as below. (Cooling)
Refrigerant
Discharge air
Outside ambient
Temp.
Intake temperature
Discharge
temperature
The pressure of the gas side
service valve.
R410A 35°C (95°F) 8.0~10.0kg/cm 2 G
NOTE
Trial test run operation
: If the actual pressure is higher than shown, the system is
most likely overcharged so extra refrigerant should be
removed.
If the actual pressure is lower than shown, the system is
most likely undercharged so extra refrigerant should be
added.
The air conditioner is now ready for use.
2.9.3 Transfer to customer with explanation
1. Operational step
Complete test run
Explain how to
operate and
maintain equipment
Make final report
(test run
inspection sheet)
Hand over
relevant printed
materials
a) The measurements taken during the test run should be
recorded and kept on a test run inspection sheet.
b) Do not forget to record the length of the refrigerant piping
and the refrigerant additional charging volume on the
plate on the back of the outdoor unit external notice
board, as this information will be required for servicing
the system.
c) Explain to the customer how to operate and maintain the
equipment and let him try it.
d) Assemble all the relevant diagrams and other printed
matter which is required to operate the system and hand
over to the customer (on the spot) and request him to
keep it handy.
e) Service contact address.
List of equipment which has been delivered
Installation drawing
It is essential to prepare a control wiring diagram
which clarifies the refrigerant system and the
control system.
1 set of operation manuals
Names of those responsible for the
work (emergency contact address)
Equipment guarantees.
Guideline for each installation process 317