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position, by the ADG BUS through the hydraulic pump transfer contactor. This ensures that
hydraulic system 3 is available when AC BUS 1 and 2 are unpowered. If AC power is
subsequently restored by an engine-driven generator or the APU generator, ACMP 3B will
return to normal operation when the PWR TXFR OVERRIDE switch is selected. For additional
information on the PWR TXFR OVERRIDE switch, see Chapter 7, Electrical.
NOTE
If ADG deployment is caused by a double engine failure, ACMP 3B
will provide emergency hydraulic power to the primary flight
controls, while all other pumps are inoperative or load shed.
NOTE
To ensure priority to the primary flight controls, a
spring-loaded-closed priority valve cuts off hydraulic system 3
pressure to the landing gear selector valves, if hydraulic system 3
pressure drops below 2,100 psi. Alternate landing gear extension
will be required in this case.
Accumulator and Reservoirs
System 3 has an accumulator that stores nominal hydraulic pressure to satisfy instantaneous
demands of aircraft systems, and dampen pressure surges within the system. The accumulator
is precharged with nitrogen to 1,500 psi.
System 3 reservoir is the largest of the three hydraulic systems, with a capacity of 11.14 liters
(2.94 U.S. gal). It is filled via the ground service panel, located in the right main wheel well.
During preflight, a visual inspection should include a check for accumulator pressure at
1,500 psi. With the exception of the accumulator gauge, system 3 components are not readily
accessible with the wheel well bins installed.
HYDRAULIC POWER
Description
Vol. 2 13-10-7
Oct 05/06
CL-605 Flight Crew Operating Manual
PSP 605-6
SYSTEM 3 (CONT'D)
Hydraulic System 3 Accumulator Gauge
Figure 13-10-6
CONTROLS AND INDICATORS
The HYDRAULIC panel provides the system controls; the HYDRAULIC synoptic page provides a
pictorial representation of the system status, and the EICAS page provides the system caution and
advisory messages respectively (see Figure 13-10-7 to Figure 13-10-9, and EICAS Messages
table).
HYDRAULIC POWER
Description
Vol. 2 13-10-8
Oct 05/06
CL-605 Flight Crew Operating Manual
PSP 605-6
CONTROLS AND INDICATORS (CONT'D)
HYDRAULIC Panel
HYDRAULIC Panel
Figure 13-10-7
HYDRAULIC POWER
Description
Vol. 2 13-10-9
Oct 05/06
CL-605 Flight Crew Operating Manual
PSP 605-6
CONTROLS AND INDICATORS (CONT'D)
Hydraulic Synoptic Page
HYDRAULIC Synoptic Page Color Coding (1 of 2)
Figure 13-10-8
HYDRAULIC POWER
Description
Vol. 2 13-10-10
Oct 05/06
CL-605 Flight Crew Operating Manual
PSP 605-6
CONTROLS AND INDICATORS (CONT'D)
HYDRAULIC Synoptic Page Color Coding (2 of 2)
Figure 13-10-9
HYDRAULIC POWER
Description
Vol. 2 13-10-11
Oct 05/06
CL-605 Flight Crew Operating Manual
PSP 605-6
EICAS MESSAGES
MESSAGE MEANING
HYD EDP 1A
Respective engine-driven pump pressure is less than 1,800 psi.
HYD EDP 2A
HYD PUMP 1B
Respective AC motor pump pressure is less than 1,800 psi.
HYD PUMP 2B
HYD PUMP 3A
HYD PUMP 3B
HYD SOV 1 Respective hydraulic shutoff valve is not closed after actuation of the respective
HYD SOV 2 ENG FIRE PUSH switch/light.
HYD 1 HI TEMP
Respective system temperature is greater than 96癈, or greater than 107癈 for 4
minutes after takeoff power is applied.
HYD 2 HI TEMP
HYD 3 HI TEMP
HYD 1 LO PRESS
HYD 2 LO PRESS Respective system pressure is less than 1,800 psi.
HYD 3 LO PRESS
HYD SOV 1 CLSD Respective hydraulic shutoff valve has closed after actuation of the respective
HYD SOV 2 CLSD ENG FIRE PUSH switch/light.
HYDRAULIC POWER
Description
Vol. 2 13-10-12
Oct 05/06
CL-605 Flight Crew Operating Manual
PSP 605-6
POWER SUPPLY AND CIRCUIT BREAKER SUMMARY
SYSTEM SUB-SYSTEM CB NAME BUS BAR
CB
PANEL
CB
LOCATION
NOTES
Hydraulic Systems System 1 HYD PUMP 1B AC BUS 2 2 A5
HYD SYST AC
PUMP CONT 1
DC BUS 2 2 G2
HYD SYST IND 1 DC BUS 2 2 G3
System 2 HYD PUMP 2B AC BUS 1 1 A5
HYD SYST AC
PUMP CONT 2
DC BUS 1 1 G2
HYD SYST IND 2 DC BUS 1 1 G3
System 3 HYD PUMP 3B AC BUS 1 1 A2
HYD PUMP 3A AC BUS 2 2 A2
HYD SYST AC
PUMP CONT 3A
DC BUS 2 2 G4
ESS HYD PUMP
SUPPLY
AC ADG BUS 3 A11
HYD SYST AC
PUMP CONT 3B
DC BATT 2 P2
HYD SYST IND 3 DC BATT 2 P3
Engine-Driven
Pumps
HYD SOV R ENG DC
EMERGENCY
1 S4
HYD SOV L ENG DC
　
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