Fairchild 1600A Manual

FAIRCHILD MODEL 1600A
VACUUM REGULATOR
Installation, Operation and Maintenance Instructions
Usethetwo1/4-20tappedholesintheBonnettopanel
mounttheModel1600A. Youcanmounttheregulator
inanypositionwithoutaffectingitsoperation.
Clean all pipelines to remove dirt and scale before
installation.
Apply a minimum amount of pipe compound to the
male threads of the fitting only. Do Not use teflon
tapeasasealant. Startwiththethirdthreadbackand
workawayfromtheendofthefittingtoavoidcontami-
natingtheregulator. Installtheregulatorintheairline.
The Inlet and Outlet ports are labeled “In” and “Out”.
Tighten all connections securely. Avoid undersized
fittingsthatwilllimittheflowthroughtheregulator. For
more information, see Figure 1.
NOTES:
TheModel1600Acontrolspressureinhighflow
systems above and below atmospheric pres-
sure. Toincreasevacuumordecreasetheposi-
tive pressure range, turn the Regulator Knob
counterclockwise. To decrease vacuum or in-
creasethepositivepressurerange,turntheknob
clockwise. Formoreinformation,seeFigure1.
Applications can require a connection for fast
evacuation of a Chamber. For more information,
see Figure 2.
Applications can also require a connection to
control system pressure above and below atmo-
spheric pressure. In vacuum systems, you can
leave the Supply Port open to atmosphere or
pressurize with normal supply air for faster re-
sponse. For more information, see Figure 3.
Oilfreeairmustbeappliedtotheregu-
lator. Use a filter to remove dirt and
entrained liquid in the air line ahead of
the regulator. If an air line lubricator is
used, it MUST be located downstream
of the regulator to avoid interference
withperformance.
OPERATION
INSTALLATION
Figure 1. Model 1600A Outline Dimensions
Figure 2. ChamberEvacuation belowAtmosphere
Figure 3. Chamber Purge with Positive Pressure

IS-1001600A
Litho in USA
9/00
To clean the Model 1600A, use the following steps:
1.
2.
3.
4.
5.
If the standard maintenance procedure
does not correct the problem, install the
appropriate service kit.
Shut off system pressure to the regulator to
prevent air from escaping. It is not necessary to
remove the regulator from the air line.
RemovethefourScrewsandWashers(between
ports)fromthebottomofunit. Formoreinforma-
tion, see Figure 2.
Remove the Inner Valve Assembly. For more
information, see Figure 2.
Wash the Inner Valve Assembly with a solvent.
Exercisecare toprevent damage todiaphragms
and valve facings. Avoid solvents such as
acetone, carbon tetrachloride and trichlor-
ethylene.
Replacethe assemblycarefully. Ensure thatthe
Vent in the exterior part of the Inner Valve
Assembly and the Vent in the Bonnet are clear.
For more information, see Figure 2.
MAINTENANCE
Troubleshooting
Figure 2. Model 1600A Exploded Drawing
SourceProblem
• If contaminated,
clean the source
and Body.
• If damaged, install
the service kit.
Solution
High
Bleed
Leakage Tightenthe
Bonnet Screw.
• Relief Valve
• Supply Valve
• Supply Seat
• Diaphragm
Assembly
Bonnet
Screws
NOTE:
Standard
•EA-19552-1