Specifications

SPEEDDOME ULTRA PRESSURIZED OUTDOOR DOME HOUSING 8200-0462-01, REV. B
INSTALLATION AND SERVICE GUIDE
7 of 10
Purge Procedure
1. Set the regulator gauge to 10psi.
2. Fill the housing with dry nitrogen.
Before filling, ensure the two vent
holes between the top of the housing
and the black cap are free of ice or
debris.
Nitrogen might leak through the bubble
gasket when the pressure inside the
housing exceeds 5psi.
a. Place the air chuck on the housing’s intake
valve and press down on the chuck to fill the
housing with dry nitrogen. Air escapes
through the two vent holes in the black cap
once the pressure inside the housing
exceeds 7psi. Continue filling for at least two
minutes after air escapes.
b. Place a pressure gauge on the intake valve
to verify pressure is between 3 to 5psi.
3. Purge nitrogen as follows:
a. Press the intake valve to release nitrogen
from the housing. Continue pressing until air
no longer rushes from the valve.
b. Re-fill the housing with dry nitrogen.
Continue filling for at least 10 seconds after
the vent holes release air.
c. Repeat steps (a) and (b) another three times.
d. Once purging is complete, place a pressure
gauge on the intake valve to verify pressure
is between 3 to 5psi.
Note: A peculiar sound may be heard when the
overpressure sensor opens.
Servicing the Pressurized
Housing
When servicing the pressurized housing includes
the removal of the bubble assembly, desiccant
bags in the desiccant bag holder must be replaced
before reassembly. Two desiccant bag kits (part
number 0351-0207-01) provide the four
replacement bags required.
For regions that approach the high end of the
housing’s operating temperature range of 50°C:
It is recommended that the technician have
available both the desiccant bags kits mentioned
above, as a well as a replacement bubble. On rare
occasions, a new bubble may be required to
properly re-seat the bubble trim ring assembly. The
clear bubble (part number RCPFD8-CO) and
smoked bubble (part number RCTPFD8-CO) are
available for ordering.
Intake valve
Vent hole