(c)
193DL Conditioned Air Ground Service Panel.
F. Procedure
S 663-106
CAUTION: IF YOU CAN DRAIN THE FUEL FROM THE DRAIN VALVE AFTER YOU
_______ APPLIED HOT AIR TO THE EXTERIOR FOR 3 TO 5 MINUTES, DO NOT THINK THAT ALL THE ICE IS MELTED. THE ICE ADJACENT TO THE DRAIN VALVE UNIT CAN MELT AND LET SOME WATER AND FUEL TO FLOW FROM THE DRAIN. BUT, A PIECE OF ICE CAN STAY BEHIND. IF THE FUEL DOES NOT FLOW FROM THE DRAIN, CONTINUE TO APPLY HOT AIR FOR A SHORT TIME, AND FREQUENTLY DO A CHECK OF THE FLOW FROM THE DRAIN. CATCH THE FUEL IN A CONTAINER AND MAKE SURE ALL OF THE WATER IS REMOVED.
(1) If the airplane is parked more than 45 minutes before it is refueled, drain the fuel tank sumps (AMM 12-11-03/301) before you refuel the airplane.
(a) If it is necessary, apply heat (hot air that is resistant to explosion) to the bottom of the wing in the area of the tank sumps.
S 653-153
(2)
If the airplane is parked more than two hours after it is refueled, drain the fuel tank sumps (AMM 12-11-03/301) before departure.
(a) If it is necessary, apply heat (hot air that is resistant to explosion) to the bottom of the wing in the area of the tank sumps.
(3)
Do the Cold Weather Maintenance procedure (AMM 12-33-01/301).
S 553-108
(4)
Put the airplane back to a serviceable condition after storage (AMM 10-11-02/201).
S 883-109
(5)
If the ambient temperature is -40°F (-40°C) or below within the last 12 hours, do these steps:
S 553-107
(a) Secure the lavatory doors in the open position.
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CAUTION: THE AIR ENTERING THE CONDITIONED AIR GROUND SERVICE PORT
_______ MUST NOT EXCEED 158°F (70°C) AND THE PRESSURE MUST NOT EXCEED 15 INCHES (38 CENTIMETERS) OF WATER AT THE POINT WHERE THE AIR ENTERS THE BODY OF THE AIRPLANE.
(b) For ground equipment with multiple heating hoses (YMP-350), do these steps:
NOTE: It will take approximately 60 minutes to raise the
____ flight deck temperature from -54°F (-65°C) to -4°F (-20°C) with the YMP-350 heating unit.
1) Put the outflow valve to the OPEN position. 2) Connect one heating hose to the 193DL conditioned air ground service panel. 3) Insert two heating hoses in the main equipment center through the access panel 119BL. 4) Insert one heating hose into the forward equipment bay through the access panel 113AL. 5) Keep the flight deck temperature at or above -4°F (-20°C) for 30 minutes before you remove the heating equipment.
CAUTION: THE AIR ENTERING THE CONDITIONED AIR GROUND SERVICE PORT
_______ MUST NOT EXCEED 158°F (70°C) AND THE PRESSURE MUST NOT EXCEED 15 INCHES (38 CENTIMETERS) OF WATER AT THE POINT WHERE THE AIR ENTERS THE BODY OF THE AIRPLANE.
(c) For ground equipment with a single heating hose (Herman Nelson
heater), do these steps:
1) Connect the heating hose to the 193DL conditioned air
ground service panel.
2) Attach the return hose to the 119BL main equipment center
bay door.
3) Keep the flight deck temperature at or above -4°F (-20°C)
for 30 minutes before you remove the heating equiupment.
(d) Use the procedures in (AMM 71-00-00/201) to warm the engines.
NOTE:____ It is not necessary to complete the engine warming
before proceeding to the following steps.
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S 633-110
(6) Activate the electrical/electronic systems.
NOTE: Before electrical power is applied, visually make sure all
____ control lever positions agree with the movable control surfaces.
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