VALVE - ENGINE AIR INTAKE ANTI ICE (4000DN) - INSPECTION/CHECK
______________________________________________________________
 TASK 30-21-51-210-040
 Inspection/Check of the Seal of the Engine Air-Intake Anti-Ice Valve (4000DN)
 1. Reason for the Job
__________________
 Visual inpection of the Seal of the Engine Air-Intake Anti-Ice Valve.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific clean cloth No specific warning notice
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP11-006  * methyl alcohol (Ref. 70-30-00)
 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 30-21-51-000-041 Removal of the Engine Air Intake Anti-ice Valve (4000DN) 30-21-51-400-041 Installation of the Engine Air Intake Anti-ice Valve
 (4000DN) 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors

 3. Job Set-up
__________ Subtask 30-21-51-861-053
 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 Subtask 30-21-51-941-050
 B. Safety Precautions
 (1)
 On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice to tell persons not to start the engine.

 (2)
 Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

 (3)
 On the overhead maintenance panel 50VU:

 (a)
 Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

 (b)
 Put a warning notice to tell persons not to energize the FADEC 1(2).

 Subtask 30-21-51-865-050
 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU ANTI ICE/ENG/2 1DN2 W10 122VU ANTI ICE/ENG/1 1DN1 X10
 Subtask 30-21-51-010-050
 D. Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 Subtask 30-21-51-010-059
 E. Remove the engine air-intake anti-ice valve (Ref. TASK 30-21-51-000-041).

 4. Procedure
_________ Subtask 30-21-51-210-050
 A. Visual Inspection of the the Seal
 (1)
 Examine the seal for signs of oxidation or carbon flakes.

 (2)
 Examine the seal for unwanted material left on the seal from contact with parts which touch the seal.

 Subtask 30-21-51-110-052
 B. Cleaning of the Seal WARNING : ISOPROPYL ALCOHOL IS CLASSIFIED AS A HAZARDOUS MATERIAL WHICH
_______ CAN CAUSE INJURY OR ILLNESS IF IT IS NOT CORRECTLY USED. REFER TO THE MANUFACTURER'S SPECIFIC SAFETY AND HEALTH RECOMMENDATIONS BEFORE YOU USE THIS PRODUCT. CAREFULLY READ THE APPLICABLE "MATERIAL SAFETY DATA SHEET" AND OBEY ALL SAFETY AND HEALTH PRECAUTIONS.
 (1) If necessary, clean the surface of the seal with a clean cloth made moist with methyl alcohol (Material No. CP11-006).
 Subtask 30-21-51-210-051
 C. Examination of the Seal
 (1)
 Examine the edges of the seal for cracks, dents, pitting and scratches.

 (2)
 If unwanted material cannot be removed from the seal or if the seal is damaged, replace it.

 5. Close-up
________ Subtask 30-21-51-410-055
 A. Install the engine air-intake anti-ice valve (Ref. TASK 30-21-51-400-041).

 Subtask 30-21-51-410-050
 B. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
　
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