ADC 150-2204-01, Руководство пользователя

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150-506-100-03 Appendix B: Additional Information
HRE-506 List 1 and List 2 March 28, 2000 29
HRE-506 List 1 Vented to Pressurized Conversion Procedure
The following instructions are used to convert the HRE-506 List 1 gel-filled vented enclosure to an external
pressurized enclosure.
The HRE-506 List 1 enclosure can be converted to a pressurized housing that uses a continuous local pressure
source. The conversion requires replacing the breather vent assembly with an optional pressure relief valve. The
breather vent assembly, located in the base pan, allows the internal pressure to equalize with the outside pressure.
The optional pressure relief valve is included in the shipping kit. The HRE-506 List 1 comes with a gel-filled
cable, which precludes pressurizing through the cable stub.
To convert the HRE-506 List 1 enclosure from a vented housing to a pressurized one, follow these instructions:
Figure 13. HRE-506 List 1 Remote Gel-Filled Enclosure
1 Locate the breather vent valve on the bottom of the housing. Remove the valve by unscrewing it. Refer to
Figure 2 on page 3 for more details. Save the breather vent or store it inside the housing for future
conversions.
2 Check the threaded hole for debris and clean it, if necessary.
3 Remove the pressure relief valve from the plastic bag. Verify that the gasket material is installed on the
threaded end of the valve.
4 Carefully place the threaded end of the pressure relief valve into the threaded hole on the bottom of the
housing located by the breathe vent valve. While holding the valve straight, push it into the hole and begin
turning the valve clockwise to screw in place.
Static pressurization requires monitoring and maintenance as the pressure decreases over
time.
If there are any signs of resistance while screwing the valve into place, you could be
crossthreading the part. Remove the valve and restart.
Grounding lug
Cable stub entry
Pivot bracket
Order wire terminal
Breather vent valve or
optional pressure relief valve
V-Band T-handle
Pressure cutoff valve
Air stem/Air intake T-valve
Bottom View
To pressure
supply
Pressure supply
connection
(1/2"/24 thread)