Fujitsu AB* A12GATH, Service Manual

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01-02
Execution
Perform the auto address setting of Signal amp. at first, and the next perform the auto-
address setting of indoor unit.
When you perform the autoaddress setting for the indoor unit address setting
needs to be done at first.
Pre-commisioning
"Before Power ON"
Gas leak test
Use an R410A dedicated leak tester to check for gas leaks.
1
2
3
Confirm the additional refrigerant amount with the installation
manual, etc.
Always take the R410A refrigerant from the cylinder liquid phase
and charge it using the gas phase.
(Do not lay a cylinder with siphon pipe on its side.)
Use an R410A dedicated gauge manifold and charging hose.
If taken from the air phase, since the
composition of the refrigerant which is
charged will change, low performance
and abnormal stop will occur easily.
Prevent erroneous sealing in of
refrigerant.
A leak tester for other than R410A
cannot detect leaks.
Handover & explanation of operation
In case of "Auto Address setting"
Test run & adjustment
Addition refrigerant charging
1
2
3 Power source installation inspection
Field setting and setting inspection
Transmission wire installation inspection
4 Piping installation inspection
Before starting the installed system,
the final inspection is necessary.
When you find out any incorrect install-
ation or wrong setting, revise it before
starting the system
Pre-commisioning
"After Power ON"
1
2
3
Connect Service Tool
Power source inspection
Error indication inspection
4 Transmission wire connection inspection
When you see any abnormal things,
turn OFF the power supply first, and
revise it with power OFF state.
Note :
Other Field setting with power ON state, and adjustment
Check operating condition by using service tool.
For the judgment of operating condition, refer to the operation check
sheet.
When you see any abnormal things,
stop the system, and revise it with
power OFF state.