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The oil filling system is operated through the oil replenishment panel located on bulkhead 280 (left side behind the pilot’s seat) in the flight compartment.
NOTE
1.
A reservoir TANK LO light remaining on three seconds following panel power-up indicates that the reservoir is low. Under this condition, re-filling is inhibited until the reservoir is filled.
2.
If a low oil replenishment condition occurs during a fill, the system will shut down.
Oil is to be added to the APU when the APU OIL LO QTY advisory message is on EICAS and the LO OIL for APU display is shown on the oil replenishment panel.
The switch legends on the oil replenishment panel can only be displayed when the SYSTEM ON switch is selected.
The APU may be replenished if:
.
The APU has been shut down for a minimum of 15 minutes.
.
The APU is not already full.
.
Both engines are not running and one of the other engines is not currently being replenished.
Volume 2 Flight Crew Operating Manual Rev 3, Apr 25, 2005
OIL REPLENISHMENT PANEL
SYSTEM ON
TANK LO
Selecting the POWER switch does the
The reservoir TANK LO legend
following:
comes on to indicate that the
The SYSTEM ON legend illuminates.
reservoir is low in quantity. A three second lamp test will be carried out on all annunciators.
LO OIL (APU)
The LO OIL legend
comes on to indicate
that the APU is low in
oil quantity and will
remain on until the
APU oil tank is
replenished.
VLV OPEN (APU)
PUMP ON
Selecting the PUMP ON switch does the
following:
The reservoir pump will operate and the PUMP ON legend will come on to indicate operation. The legend will remain on until the correct level of the system to be topped up is achieved.
Operation
Selecting the switch will illuminate the VLV OPEN switch legend indicating valve operation. Oil will be pumped from the reservoir (through the valve) to the engine until full is achieved.
The VLV open and LO OIL switch legends will go out when the correct level is reached.
GF0510_005a
The following procedural steps outlined are to be used only as a guide to replenish the APU oil system. The Airplane Maintenance Manual takes precedence over all servicing procedures.
.
Confirm that the “LO OIL”lamp on the oil replenishment panel corresponds to the condition indicated on EICAS APU OIL LO QTY advisory message.
.
Select the switch labeled “APU”on the oil replenishment panel.
.
Confirm that the “PUMP ON”(below reservoir label) and “VLV OPEN”(below the APU label) legends are displayed on the oil replenishment panel.
.
Select the “POWER”switch on the oil replenishment panel, “SYSTEM ON”legend on.
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