(2) Assemble the high-pressure cleaning equipment CLEANING EQUIPMENT VACLAV - TANK, INTERNAL. The high-pressure cleaning equipment must have:
 -
A high-pressure water pump-VACLAV Cleaner

 -
A high-pressure hose, 10 mm (0.4 in.) dia., 40 m (131 ft.) long-VACLAV Cleaner

 -
A spray nozzle-VACLAV Cleaner, the spray nozzle must have: . 6 nozzles to the rear (0.8 mm (0.03 in.) dia.) at angle of 40 degrees, . 1 nozzle to the front (0.8 mm (0.03 in.) dia).

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 (3) Clean the toilet waste lines.
 CAUTION : MAKE SURE THAT THE HOSE DOES NOT GO INTO THE WATER SEPARATOR: IF IT DOES IT CAN CAUSE DAMAGE TO THE WATER SEPARATOR AND TO THE WASTE HOLDING TANK.
 (a) Put the spray nozzle approximately 1 m (3.25 ft.) into the aircraft waste line.
 NOTE : Warm water, maximum 60 deg.C (140 deg.F), will make the
____
 cleaning procedure easier.

 (b)
 Operate the high-pressure water pump at a maximum pressure of 100 bar (1450 psi).

 (c)
 Slowly push the high-pressure hose into the waste line. If necessary apply COMMON GREASE (Material No. 04-017) to the high-pressure hose.

 NOTE : During the cleaning procedure you must:
____
 -flush the toilet every 30 seconds to drain the waste line.
 -stop the high-pressure cleaning equipment every 8 minutes and drain the waste holding tanks (Ref. TASK 38-31-00-680-001).
 (d)
 When the spray nozzle does not go further into the waste line:

 -stop the high-pressure water pump,
 -remove the high-pressure hose from the waste line.

 (e)
 If necessary, do the procedure again.

 (4) Do the procedure for all of the toilets.
 Subtask 38-31-00-410-072
 C. Connect the Toilet Assemblies
 (1)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 (2)
 Clean and dry the work area with lint free cloth MISCELLANEOUS (Material No. 19-003).

 (3)
 Connect the toilet assemblies (Ref. TASK 38-31-41-400-001).

 (4)
 Remove the plastic cover from the work area.

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 Subtask 38-31-00-710-066

 D. Do this Test
 (1)
 Open the water shutoff valve in the lavatories.

 (2)
 Do an operational test of the toilet assemblies (Ref. TASK 38-31-00-710-009).

 (3)
 Examine the toilet connections and the waste lines for leaks. NOTE : Leaks are not permitted.

____
 Subtask 38-31-00-613-061

 E. Do the servicing of the waste system (Ref. TASK 12-16-38-613-001).
 5. Close-up
________ R Subtask 38-31-00-862-062 R A. De-energize the ground service network (Ref. TASK 24-42-00-862-001).

 INTENTIONALLY BLANK

R 1 1

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 TASK 38-31-00-100-005

 Cleaning of the Toilet Waste Lines with Crushed Ice
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific clean lint-free cloth
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
No specific crushed ice
 No specific pure vinegar (10% acetic acid solution)

 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-15-38-613-001 Fill the Potable Water Tank System (Aircraft
 Electrical Power Available) 12-16-38-613-001 Servicing of the Toilet System 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 38-10-00-614-001 Pressurization of the Potable Water System from a Ground Air Supply
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 3. Job Set-up
__________

 Subtask 38-31-00-861-063
 A. Energize the ground service network
　
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