Charging The Remaining Refrigerant - Huawei FusionCol8000-E240 User Manual

FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
If the R410A refrigerant is provided by Huawei, put the refrigerant cylinder upside
down when charging the refrigerant. If the refrigerant is not provided by Huawei,
check with the refrigerant provider whether the cylinder has a siphon. If the
cylinder has a siphon, stand the cylinder when charging refrigerant. If the cylinder
has no siphon, put the cylinder upside down when charging refrigerant. These
measures ensure that the refrigerant is charged in the liquid state.
Step 4 Open the low pressure gauge valve. Charge 1 kg of refrigerant from the low
pressure side, and then close the low pressure gauge valve. Then open the high
pressure gauge valve and charge the remaining refrigerant from the liquid pipe
needle valve.
Do not move the hose or refrigerant cylinder when charging refrigerant.
Otherwise, the reading on the electronic balance will be affected.
Step 5 The amount of pre-charged refrigerant must be greater than or equal to half of
the total charge amount calculated and less than or equal to the total charge
amount. If the total refrigerant amount cannot be fully pre-charged, charge the
remaining amount of refrigerant during power-on commissioning.
Step 6 After the refrigerant is charged, close all pressure gauge valves and the refrigerant
cylinder valve.
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8.4.13.5 Charging the Remaining Refrigerant

Prerequisites
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Procedure
Step 1 Tap Start on the home screen.
Step 2 Choose Maint > Diagnostic > Enter to enter the diagnostic mode.
Step 3 Change the compressor rotational speed to 3000 rpm.
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Tighten the needle valve bonnets when the charge is complete. Check whether a needle
valve leaks by applying soap bubbles to the valve vent or using a halogen leak detector. If it
leaks, contact Huawei technical support.
Before starting the compressor, ensure that the unit switch is turned on.
Remove the refrigerant cylinder after ensuring that no more refrigerant needs
to be charged.
Charge refrigerant in an amount exactly as standard charge required.
Otherwise, the device may be damaged.
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