Task 8.5 Testing Vents Response Pressure After Cleaning; Task 8.6 Battery Cleaning Procedure Of Any Disassembled Battery Component - Hawker F20/4H1C-R Operating And Maintenance Manual

Task 8.5 – Testing vents response pressure after cleaning
OPERATING INSTRUCTION AND TECHNICAL REQUIREMENTS (TR)
ATTENTION:
• Spare parts used for any repair listed below have to comply with
the IPL.
• Do not store wet vents in plastic bags.
NOTE
Before testing the vents ensure they have been cleaned in
accordance to Task 8.6.
Specialized test equipment is commercially available; Appendix 5.
1. Check the vents and its sealing rings visually for damages; cracks
and breaks on vent bodies as well as for distortion. Ensure the
spring is still attached to the vent body.
2. • Fix the vent with its O-ring into the appropriate adapter
• Attach the adapter to the adjustable pressure-reducing device
• Submerge the adapter and vent in a container of water
• Increase the pressure slowly
• Record the pressure when the vent opens (indicated by bubbles)
• Stop the pressure source. Allow air pressure to be vented
through the valves
• Requirement: for the vent pressure: see table 1 at section 1.6.2.
Task 8.6 – Battery cleaning procedure of any disassembled battery component
OPERATING INSTRUCTION AND TECHNICAL REQUIREMENTS (TR)
Note: If the insulation resistance value of the battery is smaller than
0.5 MΩ, Battery cleaning shall be carried out.
Do not use any other solvent than soapy water for cleaning
disassembled battery components.
1. Remove any contamination of connectors and harnesses with
a damp cloth, soaked in a soapy water solution.
2. Clean all remaining disassembled battery components, e.g. battery
case, liners, vent plugs in a solution with soapy water. Afterwards
rinse with fresh water.
NOTE: it is recommended that drying with the pressurised air-supply
should be below 3 bar.
3. Allow all components to dry naturally, or supported by oil-free
pressurised air.
4. Coat all disassembled and cleaned metallic components with
silicone spray (Appendix 8 , consumables).
5. Continue in Task 7.3 step 17.
The document reference is online, please check the correspondence between the online documentation and the printed version.
INSTRUCTIONS / EVIDENCE WHEN DEVIATIONS FROM TR
Replace damaged vents and / or their damaged
sealing rings.
If vents operate outside the parameters defined in table 1 of
section 1.6.2, replace vents.
INSTRUCTIONS / EVIDENCE WHEN DEVIATIONS FROM TR
33