Fairchild Model 17 Manual

Fairchild Model 17
Vacuum Regulator
Installation, peration and Maintenance Instructions
Figure 1. Model 17 Outline Dimension
General Information
The Model 17 is a high accuracy vacuum regulator that provides uniform vacuum regulation
independent of vacuum supply changes and flow demand.
Specifications
Vacuum Supply (Max) 30” Hg (Full Vacuum)
Flow Capacity 3 scfm @ 25” Hg Supply, 10” Hg setpoint
Sensitivity 1/8” W. C.
Ambient Temperature Limits -40 F to + 200°F, (-40°C to + 93.2°C)
Vacuum Supply Effect Less than 0.1” Hg for 10” Hg change in vacuum supply
Materials of Construction Body & Housing . . . . Aluminum
Trim . . . . . . . . . . . . . . . Brass, Zinc Plated Steel
Elastomers . . . . . . . . . Nitrile

Installation
Clean all pipelines to remove dirt and scale efore
installation.
Apply a minimum amount of pipe compound to the male
threads of the fitting only. Start with the third thread
ack and work away from the end of the fitting to avoid
the possi ility of contaminating the regulator. Install the
regulator in the air line.
The inlet and outlet connections are la eled on the un-
derside of the regulator with the arrows pointing in the
direction of the flow. Tighten connections securely.
Avoid undersized fittings that will limit the flow through
the regulator and cause a pressure drop downstream.
For more information, see Figure 1. “Outline Dimen-
sions”.
N TE: Oil free air must e applied to the
regulator. Use a filter to remove dirt and
entrained liquid in the air line ahead of the
regulator. If an air line lu ricator is used, it
MUST e located downstream of the
regulator, to avoid interference with
regulator performance.
Flow
Process
Vacuum Pump
OUT
IN
IS-1000017
Litho in USA
Rev 0108
Maintenance
To clean the Model 10V, use the following
procedures:
1. Before assem ly, shut off the valve that is
supplying air to the regulator. This is to prevent
air from escaping. It is not necessary to
remove the regulator from the air line.
2. Remove the two Screws from the ottom of the
unit.
3. Pull out the Inner Valve Assem ly. Wash the
Seat on the Inner Valve Assem ly carefully.
4. Wipe off any particles that may e attached to
ru er Seat Ring in Body.
5. Replace the assem ly carefully.
6. Keep the vent hole in the Bonnet clear for proper
regulator operation. Lu ricate the adjusting
screw with Molycote “G”.
Figure 2. Model 17 Installation Diagram
N TE: Avoid such solvents as acetone,
carbon tetrachloride and
trichorethylene.
Trouble-Shooting
Problem Solution
Leakage Body Screws
Tightness.
Diaphragms.
Valve Seal Ring
Chatter lu rication.
LEGAL N TICE
The information set forth in the foregoing Installation, Operation and Maintenance Instructions shall not e modified or amended in any respect without prior
written consent of Fairchild Industrial Products Company. In addition, the information set forth herein shall e furnished with each product sold incorporating
Fairchild's unit as a component thereof.