Newport IsoStation Manual de usuario
IsoStation™Vibration
Isolated Workstation
I
NSTRUCTION
M
ANUAL
Warranty
Newport Corporation warrants the frame to be free from defects in material
and workmanship for a period of one year from the date of shipment and
isolators for a period of two years from date of shipment. In addition, the
laminated honeycomb tops have a lifetime performance and delamination
warranty under normal use and proper handling. If found to be defective
during the warranty period, the product will either be repaired or replaced
at Newport’s option.
To exercise this warranty, write or call your local Newport representative or
contact Newport headquarters in Irvine, California. You will be given
prompt assistance and return instructions.
Repaired or replaced products are warranted for the balance of the original
warranty period or 90 days, whichever is longer.
This warranty does not apply to defects resulting from modifications or
improper use of the system or its component parts.
This warranty is in lieu of all other warranties, expressed or implied,
including any implied warranty of merchantability or fitness for a particular
use. Newport Corporation shall not be liable for any indirect, special, or
consequential damages.
©1997, Newport Corporation
Irvine, California, U.S.A.
Part No. 21413-01, Rev. UA
IN-08951 (03-00)
ii
iii
Table of Contents
Warranty .................................................................................................................. ii
Table of Contents .................................................................................................. iii
List of Figures ........................................................................................................ iv
Section 1 – General Information
1.1 Introduction .............................................................................................. 1
1.2 Getting Started .......................................................................................... 1
1.3 Unpacking and Inspection ....................................................................... 1
1.4 Safety Terms ............................................................................................. 1
1.5 Workstation Placement ........................................................................... 3
1.6 Warranty Information .............................................................................. 3
Section 2 – Assembly
2.1 Loose Assembly of IsoStation Frame and Air System.......................... 4
2.1.1 Frame Assembly ............................................................................... 4
2.1.2 Air System Assembly ....................................................................... 5
2.1.3 Installing the Table Top ................................................................... 6
2.2 Squaring and Leveling the Frame ........................................................... 6
2.3 Isolating the Table Top ............................................................................ 7
2.4 Installing Accessories ............................................................................ 10
Section 3 – Operation
3.1 Principles of Operation .......................................................................... 15
3.2 Performance Adjustments ..................................................................... 15
3.3 Maintenance ............................................................................................ 16
3.3.1 Cleaning ........................................................................................... 16
Section 4 – Troubleshooting
4.1 Poor Isolation Performance .................................................................. 17
4.1.1 Table Top Does Not Lift Up (Float) .............................................. 17
4.1.2 Other Causes of Poor Isolation ..................................................... 17
4.2 Oscillations.............................................................................................. 17
4.3 Releveling the System ............................................................................ 17
4.4 Water in the Air Supply ......................................................................... 17
Section 5 – Factory Service
5.1 Obtaining Service ................................................................................... 18
5.2 Service Form ........................................................................................... 19
iv
List of Figures
Figure Title Page
1.1 Assembly Orientation....................................................................... 2
2.1 Leveling Pad Adjustment .................................................................4
2.2 Caster Installation .............................................................................5
2.3 Air Regulator/Filter (ARF) ................................................................6
2.4 Air System Diagram ..........................................................................7
2.5 Leveling Arm Orientation ................................................................ 7
2.6 Leveling Valve .................................................................................... 8
2.7 Installing Isolator Modules ..............................................................9
2.8 Workstation Diagram ......................................................................11
2.9 Ground Strap Attachment .............................................................. 14
3.1 Newport Laminar Flow Damping Isolator Design ....................... 16
1
Section 1
General Information
The IsoStation Vibration Isolated Workstation provides an ideal working
platform for vibration influenced devices such as interferometers, micro-
scopes, and balances. Sensitive instruments such as these will show
significant improvements in resolution and repeatability when isolated from
floor motion by the IsoStation pneumatic suspension system. This versatile
workstation is available in a broad range of sizes, working surfaces, isolator
capability, and accessory options.
Special care was taken to ensure excellent performance in the 20-50 Hz floor
vibration frequency range corresponding to dominant ambient vibration
frequencies common to multi-floor buildings. The modular pneumatic
isolators provide excellent protection against both vertical and horizontal
floor motions.
These workstations integrate Newport’s rigid, laminated honeycomb panel
technology and pneumatic isolation systems to provide a mounting plat-
form which is rigid, yet thin and lightweight. The system accommodates
high-center of-gravity loads with exceptional stability. Equipped with
optional casters, the system is easy to move without heavy equipment and
may be safely lifted by building elevators.
It is possible to tailor the system to a wide variety of applications using the
range of sizes and available working surfaces.
Please read and understand this instruction manual thoroughly before
beginning the assembly of the IsoStation workstation. The components
have been partially assembled at the factory and only require final assem-
bly and performance adjustment tasks. A bubble level is provided to aid in
leveling the system.
IsoStation components have been packed in labeled boxes. Make sure the
total number of delivered crates equals the total number listed on the
shipping documentation. Go over the assembly orientation diagram (Figure
1.1) while unpacking and verify the presence of all ordered parts. Carefully
inspect all components for any damage that may have occurred during
shipping. Report any such damage to the shipping agent at once.
The following safety terms are used in this manual:
The Warning term used in the text indicates dangers that could result in
personal injury.
The Caution term indicates situations that may result in damage to the
IsoStation components.
Getting Started
Introduction
1.1
1.2
Unpacking and
Inspection
1.3
Safety Terms
1.4
2
Figure 1.1 — Assembly Orientation
Support Ring with Armrests
The support ring encircles the top, providing
a mounting surface for shelves and support
ring mounts. Two armrests are included
with the support ring.
Sliding Shelves
Available in 6, 10, 14 and 21-inch
widths, these durable laminated
shelves rest on the optional support
ring. Be sure to order one for a handy
place to keep essential tools, samples
or documents close at hand. Or, for
maximum shelf space, order two —
one on each side of your system.
Equipment Shelves
One or two equipment shelves attach to the optional support
ring, providing extra storage space without transmitting
vibrations to the work surface.
Support Ring Mounts
Mounts may be moved any-
where around the support
frame for secure attachment
for virtually any type of spe-
cial equipment. A generous
array of tapped holes on the
top and side surfaces per-
mits secure mounting. Many
customers order an extra
mount for last-minute equip-
ment additions.
Instrument Rack
Standard 19-inch rack-mounted electron-
ics modules can be integrated into the
workstation with the instrument rack ac-
cessory. The rack is constructed of welded
heavy-gauge steel for stability and rug-
gedness. For additional isolation from
vibrations transmitted through control,
signal and power cables, the Cable Man-
ager accessory is recommended.
Casters
With these heavy-duty cast-
ers, a workstation can be
quickly and easily moved by
one person. IsoStation is also
compact enough to fit in most
elevators.
Front Support Bar
Includes two armrests for comfort-
able all-day operation of equip-
ment. Also allows attachment of
movable support ring mount.
[Note: Back support bar without
armrests also available.]
3
To ensure optimal performance carefully consider placement of your
workstation. Try to locate the unit on as level a surface as possible. Place-
ment on an uneven floor may make proper frame leveling more difficult. If
the unit will be located on floors other than the ground floor, attempt to
place it near primary vertical building structures such as exterior walls or
support columns. This will minimize the possibility of lower frequency floor
motion affecting the isolation performance. It is also advisable to avoid
locations adjacent to major sources of floor vibration such as operating
machinery.
WARNING
If installation site is susceptible to earthquakes it is recommended
that the legs be securely fastened to either the floor or an adjacent
wall. A support ring or support bars are also required to provide
earthquake table top restraint.
Warranty information may be found on page ii. Should it be necessary to
exercise the warranty, contact your Newport representative to determine
the correct course of action. Newport Corporation maintains offices in the
United States and worldwide. Check the back cover of this manual for the
addresses and phone numbers of these offices.
Workstation
Placement
1.5
1.6 Warranty
Information
4
Section 2
Assembly
2.1.1 Frame Assembly
A. Typically, all IsoStation frames are fully assembled and tested at the
factory. If this is true in your case please disregard Sections 2.1.1 and
2.1.2. In some instances, overseas shipping will result in a partially
unassembled frame. In this case you should follow the procedures
outlined below.
B. Adjust the leveling pads on the bottoms of the legs (Figure 2.1).
Rotate the pads until the bottom of the pad extends 2 inches from the
bottom of the frame.
Jam nut
Height adjust nut
2.00"
(50mm)
Figure 2.1 — Leveling Pad Adjustment
C. If casters have been ordered, fasten them to the frame assemblies at
the pre-drilled and tapped locations on the lower cross members
(Figure 2.2), placing the 1 1/2 inch spacers between the caster and the
frame. Transferring the load to the casters is accomplished by simply
retracting the leveling pads into the legs once assembly is completed.
After the workstation has been moved to the desired location, re-
extend the leveling pads to lift the casters off the floor. Do not use the
IsoStation with the casters in contact with the floor.
Loose Assembly of
IsoStation Frame and
Air System
2.1
5
1-1/2" thick
spacer
Lower horizontal
leg brace
Caster
5/16"-18x2.0 hex bolt
5/16 lock washer
Figure 2.2 — Caster Installation
D. Layout the right and left leg assemblies along with the rear brace as
shown in Figure 1.1.
E. Assemble the leg units to the rear brace leaving the bolts slightly
loose. If armrest support bars are included, install them to the leg
assemblies. Make sure to consider the desired working height of the
armrest and/or shelf with respect to the table top surface and posi-
tion the support bars accordingly, also leaving the bolts slightly
loose.
2.1.2 Air System Assembly
The IsoStation workstation is shipped with the air regulator/filter (ARF),
Figure 2.3, and leveling valves installed on the leg assemblies.
A. Using the white tubing provided connect the inlet fitting on the right
leg assembly valve (single valve) to the “T” fitting on the left leg
assembly (see Figure 2.4). To connect the tubing to the fittings, insert
and firmly press the tubing into the fitting. ( Warning: Do not attempt
to disconnect the tubing once the system is pressurized.) Route the
tubing along the rear brace and secure it in position using the stick-on
tubing clips.
B. Turn the ARF control knob counterclockwise all the way to the “OFF”
position.
C. Use the translucent tubing provided to connect the ARF inlet to the
air supply.
6
Pressure
gauge
Filter
canister
Control
Knob
Top View Front View
Drain Valve
Figure 2.3 — ARF
2.1.3 Installing the Table Top
Lift the table top and carefully set it on the frame. Use a ruler to ensure that
the top is approximately centered on the frame.
WARNING
The table top can weigh as much as 250 lb (114 kg). It is important
to ensure that adequate personnel is available when installing the
table top or employ the use of a forklift or hoist.
For optimum performance the IsoStation frame must be assembled so that
the tops of the four legs are coplanar. If not, isolator travel may be limited.
A. Adjust the four leveling pads (Figure 2.1) until the table top contacts
evenly on all four of the legs and does not rock when pressed down
on at any of the four corners.
B. Tighten all frame and armrest support bolts.
C. Level the table top using the standard bubble level provided, or
equivalent, making any necessary further adjustments to the four
leveling pads.
D. Recheck that neither the frame nor the top can be rocked.
After the table top has been installed, but before the isolators have been
pressurized, remove the two Philips-head screws located on the sides of
each isolator.
Whenever the table top is removed, for example when the workstation is
transported to another location, reinstall the screws. Moving the workstation
with the table top installed does not require reinstallation of the screws.
2.2 Squaring and
Leveling the Frame
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