W DOC AIRBUS | AMM A320F

Operational Check of ACT Transfer-Fuel-Pump Ground-Fault-Interrupters (GFI) (SFAR88)

TASK 28-18-00-710-803-A
Operational Check of ACT Transfer-Fuel-Pump Ground-Fault-Interrupters (GFI) (SFAR88)

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
ZONE: 122
ZONE: 210
FIN: 122QH ** ON A/C NOT FOR ALL
FIN: 124QH ** ON A/C NOT FOR ALL
1. Reason for the Job
Refer to the MPD TASK: 281800-11
OPERATIONAL CHECK OF ACT TRANSFER FUEL PUMP GROUND FAULT INTERRUPTERS (GFI)(SFAR88).
NOTE: Two persons are necessary to do this procedure.
2. Job Set-up Information
 A. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
122
AVIONICS COMPARTMENT
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
TASK 52-41-00-010-002-A
Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A
Close the Avionics Compartment Doors after Access
F ACT Transfer Fuel Pump GFI - Location and Detail
3. Job Set-up
Subtask 28-18-00-941-055-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
Subtask 28-18-00-865-052-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUFUEL/ACT/FUEL PUMP/SPLY25QHQ29
Subtask 28-18-00-010-058-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Open access door 822 (Ref. AMM TASK 52-41-00-010-002).
   (2) To get access to GFI devices 122QH and 124QH:
  • On 107VU, loosen the quick release fasteners and remove the cover.
4. Procedure
Subtask 28-18-00-710-053-A ** ON A/C NOT FOR ALL
A. Operational Check of ACT Transfer-Fuel-Pump Ground-Fault-Interrupters (GFI) (SFAR88)
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
   (3) On the ECAM control panel, push the FUEL pushbutton switch:
  • Make sure that the FUEL page shows on the ECAM lower Display Unit (DU).
   (4) Make sure that the applicable ACT(s) contains a minimum of 500 kg (1100 lb) of fuel.
   (5) Make sure that the center tank contains a minimum of 1500 kg (3310 lb) of fuel.
ACTION
RESULT
1.In the cockpit, on overhead panel 28VU:
On overhead panel 28VU:
  • Push (in) the MODE SEL pushbutton switch.
  • The MAN light in the pushbutton switch comes on.
  • Set the ACT XFR rotary switch to AFT1.
NOTE: The fuel transfer starts when you select AFT1. Thus, it is recommended to do this test with two persons.
On the ECAM lower DU:
  • The solid green arrow comes into view
  • Make sure that the ACT transfer pump operates (it must start when the ACT XFR switch is selected to AFT1).
2.In the avionics compartment, on panel 107VU, find the GFI devices that follows:
  • 122QH
  • 124QH.
3.During the step that follows, you must monitor the Trip/Reset indicator button, when you push the related test button.
4.On GFI 122QH:
On GFI 122QH:
  • Push the test button.
  • Make sure that the Trip/Reset indicator button moves to tripped position
  • Make sure that you can see the metal shaft of the Trip/Reset indicator.

The pump stops.

After a minimum of 60 seconds, on the ECAM upper DU:
  • The Engine/Warning Display (EWD) shows the warning "FUEL - ACT PUMP LO PR".
5.In the cockpit, on overhead panel 28VU:
On overhead panel 28VU:
  • Release (out) the MODE SEL pushbutton switch.
  • The MAN light in the pushbutton switch goes off.
6.On GFI 122QH:
On GFI 122QH:
  • Push the Trip/Reset indicator until it is flush with the GFI body.
  • The Trip/Reset indicator button is in reset position.
7.In the cockpit, on overhead panel 28VU:
On overhead panel 28VU:
  • Push (in) the MODE SEL pushbutton switch.
  • The MAN light in the pushbutton switch comes on.
8.On GFI 124QH:
On GFI 124QH:
  • Push the test button.
  • Make sure that the Trip/Reset indicator button moves to tripped position
  • Make sure that you can see the metal shaft of the Trip/Reset indicator.

The pump stops.

After a minimum of 60 seconds, on the ECAM upper DU:
  • The EWD shows the warning "FUEL - ACT PUMP LO PR".
9.In the cockpit, on overhead panel 28VU:
On overhead panel 28VU:
  • Release (out) the MODE SEL pushbutton switch.
  • The MAN light in the pushbutton switch goes off.
10.On GFI 124QH:
On GFI 124QH:
  • Push the Trip/Reset indicator until it is flush with the GFI body.
  • The Trip/Reset indicator button is in reset position.
11.In the cockpit, on overhead panel 28VU:
On overhead panel 28VU:
A.Push (in) the MODE SEL pushbutton switch.
  • The MAN light in the pushbutton switch comes on
  • The fuel transfer starts again.

Make sure that the system operates correctly.
B.Release (out) the MODE SEL pushbutton switch.
The MAN light in the pushbutton switch goes off.
C.Set the ACT XFR rotary switch to OFF.
On the ECAM lower DU:
  • The solid green arrow goes out of view.
NOTE: The solid-green ACT transfer-arrow and transfer line will show when the pump operates and the transfer path is open. The arrow and line will not show when the pump goes to low pressure.
NOTE: The AUTO TRANSFER FAULT alert can show because of the fuel distribution in the wing and center tanks. This is not important for the GFI test.
5. Close-up
Subtask 28-18-00-410-058-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) On 107VU, install the cover and tighten the quick release fasteners.
   (3) Close access door 822 (Ref. AMM TASK 52-41-00-410-002).
Subtask 28-18-00-860-052-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
   (2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:17:18 UTC
"WTRUIB" 2025