Fairchild 1600A Manual

FAIRCHILD MODEL 1600A
VACUUM REGULATOR
Installation, Operation and Maintenance Instructions
Figure 1. Model 1600A Outline Dimensions
INSTALLATION
Usethetwo1/4-20tappedholesintheBonnettopanel
mounttheModel1600A. You can mount theregulator
inany position without affecting its operation.
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
tape as a sealant. Start with the third thread back and
work away from the end of the fitting to avoid contami-
nating the regulator. Install the regulator in the air line.
The Inlet and Outlet ports are labeled “In” and “Out”.
Tighten all connections securely. Avoid undersized
fittings that will limit the flow through the regulator. For
more information, see Figure 1.
NOTES:
Oil free air must be applied to the regu-
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.
Figure 2. Chamber Evacuation below Atmosphere
Figure 3. Chamber Purge with Positive Pressure
OPERATION
The Model 1600A controls pressure in high flow sys-
tems above and below atmospheric pressure. To
increase vacuum or decrease the positive pressure
range,turntheRegulator Knob counterclockwise. To
decrease vacuum or increase the positive pressure
range,turntheknobclockwise. Formoreinformation,
see Figure 1.
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 atmospheric pres-
sure. In vacuum systems, you can leave the Supply
Port open to atmosphere or pressurize with normal
supply air for faster response. For more information,
see Figure 3.
LEGAL NOTICE:
The information set forth in the foregoing In-
stallation, Operation and Maintenance Instruc-
tions shall not be modified or amended in any
respect without prior written consent of Fair-
child Industrial Products Company. In addition,
the information set forth herein shall be fur-
nished with each product sold incorporating
Fairchild's unit as a component thereof.

MAINTENANCE
To clean the Model 1600A, use the following steps:
1. Shut off system pressure to the regulator to
prevent air from escaping. It is not necessary to
remove the regulator from the air line.
2. Remove the four Screws and Washers (between
ports) from the bottom of unit. For more informa-
tion, see Figure 2.
3. Remove the Inner Valve Assembly. For more
information, see Figure 2.
4. Wash the Inner Valve Assembly with a solvent.
Exercise care to prevent damage to diaphragms
and valve facings. Avoid solvents such as
acetone, carbon tetrachloride and trichlor-
ethylene.
5. Replace the assembly carefully. Ensure that the
Vent in the exterior part of the Inner Valve
Assembly and the Vent in the Bonnet are clear.
For more information, see Figure 2.
Troubleshooting
Problem Source Solution
Leakage Bonnet Tighten the
Screws Bonnet Screw.
High • Relief Valve • If contaminated,
Bleed • Supply Valve clean the source
• Supply Seat and Body.
• Diaphragm • If damaged, install
Assembly the service kit.
NOTE: If the standard maintenance procedure
does not correct the problem, install the
appropriate service kit.
Standard Figure 2. Model 1600A Exploded Drawing
• 19552-1
IS-1001600A
Litho in USA
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