(2)
Make sure that the access platform is in position at the door 825.
Subtask 30-73-53-010-053
B. Get Access
(1)
Make sure that the FWD cargo-compartment door 825 is opened (Ref. TASK 52-30-00-860-001).
(2)
Make sure that the CARGO COMPT LIGHT switch 6LU is to the ON position.
(3)
Make sure that the panels 131GW, 131HW, 131MW, 131QW, 131RW, 131PW are removed.
Subtask 30-73-53-865-057
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R 2000VU POT/WASTE WIP HEATER LINE 1DW A02 R 2000VU POT/WASTE WIP HEATER CTL 2DW A01
4. Procedure
_________
(Ref. Fig. 401/TASK 30-73-53-991-003)
Subtask 30-73-53-420-052
A. Installation of the Heater Elements
(1)
Install the heater elements.
(a)
Install the heater elements (3).
(b)
Attach the heater elements (3) on the potable water pipe with adhesive tape (4).
(c)
Connect the three wires (5) of the heater elements (3) to the terminal block.
(2)
Install the glass wool mats.
(a)
Insulate all the pipes with glass wool mats (1) and (6).
(b)
Make sure that the glass wool mats (1) and (6) are correctly installed on the water pipes.
(c)
Hold the glass wool mat (6) on the water pipes with the adhesive tape and tie-down straps (2).
Subtask 30-73-53-865-058
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R 2000VU POT/WASTE WIP HEATER LINE 1DW A02 R 2000VU POT/WASTE WIP HEATER CTL 2DW A01
Subtask 30-73-53-720-052
C. Do the functional test of the potable-water ice protection (Ref. TASK 30-73-00-720-001).
5. Close-up
________
Subtask 30-73-53-410-052
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
In the FWD cargo compartment, install the panels: 131GW, 131HW, 131MW, 131QW, 131RW, 131PW.
(3)
Set the CARGO COMPT LIGHT switch 6LU to OFF position.
(4)
Close the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-002).
(5)
Remove the access platform(s).
Subtask 30-73-53-862-050
B. De-energize the ground service network (Ref. TASK 24-42-00-862-001).
HEATER ELEMENT - REMOVAL/INSTALLATION
_____________________________________
TASK 30-73-55-000-001
Removal of the Potable-Water Heater Elements
WARNING : ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE
_______ ENVIRONMENT.
NOTE : The procedure is the same for all the heater elements.
____
1. Reason for the Job
__________________
Self Explanatory
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 insertion-removal tool M15.570-16
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External
Power 30-73-55-991-001 Fig. 401 FOR FIN 333DW, 334DW 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the
Yellow Electric Pump FOR FIN 333DW 25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 FOR FIN 334DW 25-21-41-000-001 Removal of the Passenger Seats 25-28-41-000-001 Removal of the Textile Floor-Covering 53-32-12-000-002 Removal of the Cabin Floor Panels
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