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Select COWL ANTI ICE to ON on same side as shut down/inoperative air
conditioning system.
2. ISOLATION Valve ....................................................................................CLOSED
See Chapter 1, Expanded Limitations, Section 01-21-20: Bleed Air System.
05-01-20: Air Conditioning Airflow Hot Or Uncontrollable
IF COOL AIR IS NOT PRODUCED IN EITHER AUTO, MANUAL OR OFF MODE:
1. Affected Air Conditioning PACK Switch ......................................................OFF
If cool air is not produced in either AUTO, MANUAL or OFF mode, the water
separator may be frozen, preventing cool air from flowing through it. To determine
whether the water separator is frozen or the Air Cycle Machine (ACM) is
developing a problem, select the affected Air Conditioning PACK switch to OFF.
ALLOW TEN (10) MINUTE TIME PERIOD TO ELAPSE, THEN:
2. Affected Air Conditioning PACK Switch .............................RESELECT TO ON
After allowing ten (10) minutes to elapse, reselect the affected Air Conditioning
PACK switch to ON. If cool airflow is present, the water separator is most likely the
problem.
IF COOL AIRFLOW IS PRESENT:
3. Temperature Setting............................................SELECT SLIGHTLY WARMER
Select a slightly warmer temperature to preclude water separator from re-freezing.
IF WARM OR HOT AIRFLOW RETURNS:
4. Malfunctioning Pack......AS REQUIRED BY FLIGHT CONDITIONS / MISSION
REQUIREMENTS
If warm or hot airflow returns, the ACM is developing a problem. Depending on
flight conditions or mission requirements, the malfunctioning air conditioning pack
should be managed as required. See Section 05-01-10: Air Conditioning System
Shut Down Or Inoperative, for bleed air requirements with the air conditioning
packs shut off.
05-01-30: Left Or Right Cooling Turbine Hot
L-R COOL TURB HOT (AMBER)
This condition is a result of either an excessive air supply to the Air Cycle Machine
(ACM), resulting in an overspeed/overtemperature condition, or an air bearing failure
within the ACM. Excessive airflow (from 12th stage compensation) can be the result of
operating COWL ANTI ICE and/or WING ANTI ICE at high altitudes.
ON GROUND ONLY:
NOTE:
The air conditioning flow control and shutoff valve will
automatically close.
OPERATING MANUAL
EXPANDED ABNORMAL / EMERGENCY PROCEDURES 05-01-00
Page 1
May 31/00
Revision 0
1. Associated Air Conditioning PACK Switch .................................................OFF
IN FLIGHT:
2. Current BLEED AIR Configuration ........................................................ASSESS
IF COWL ANTI ICE AND/OR WING ANTI ICE ARE ON:
A. COWL ANTI ICE Limitations .....................................................CONSULT
See Section 01-30-20: Cowl Anti-Icing, Temperature Range For Cowl Anti-
Icing chart, to determine whether the use of anti-ice is required.
IF COWL ANTI ICE AND/OR WING ANTI ICE IS REQUIRED, CONSIDER
DEPARTING ICING CONDITIONS BEFORE COMPLETING STEP 3.
IF COWL ANTI ICE AND/OR WING ANTI ICE IS ON BUT NOT REQUIRED:
3. Associated COWL/WING ANTI ICE...............................................................OFF
4. Associated Air Conditioning TEMP CONTROL Selector ...SELECT WARMER
TEMPERATURE
5. One (1) Minute.....................................................................ALLOW TO ELAPSE
IF COOL TURB HOT MESSAGE REMAINS DISPLAYED:
6. Associated Air Conditioning PACK Switch ...........................OFF (ONE ONLY)
If both air conditioning packs are affected, select only one (1) pack switch to OFF.
CAUTION
DO NOT SELECT BOTH AIR CONDITIONING PACK
SWITCHES TO OFF AT HIGH ALTITUDE.
IF COWL ANTI ICE IS REQUIRED OR IF AIRPLANE ALTITUDE IS
ABOVE 41,000 FT:
7. Associated COWL ANTI ICE.....ON (SAME BLEED AIR SYSTEM WITH PACK
SHUT DOWN)
IF COOL TURB HOT MESSAGE REMAINS DISPLAYED FOR SECOND PACK:
8. Descent To Lower Altitude ........................................................................BEGIN
9. CREW OXYGEN Masks/Regulators......................................................ON/100%
10. PASSENGER OXYGEN Masks ...............MANUALLY DEPLOY (IF REQUIRED)
11. Airplane ................PROCEED TO NEAREST SUITABLE AIRPORT AND LAND
IF COOL TURB HOT MESSAGE STILL REMAINS DISPLAYED:
12. Second Air Conditioning PACK Switch .......................................................OFF
13. Airplane ................PROCEED TO NEAREST SUITABLE AIRPORT AND LAND
OPERATING MANUAL
05-01-00 EXPANDED ABNORMAL / EMERGENCY PROCEDURES
Page 2
May 31/00
Revision 0
ANTI-SKID SYSTEM
05-02-10: Anti-Skid Failure (Brake-By-Wire)
ANTI-SKID FAIL (AMBER)
Display of the ANTI-SKID FAIL amber message on CAS indicates a failure has occurred
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湾流4操作手册 Gulfstream IV Operating Manual 3(68)
