Newport IsoStation Manuel utilisateur

IsoStation™Vibration

Isolated Workstation

NSTRUCTION

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.

Irvine, California, U.S.A.

Part No. 21413-01, Rev. UA

IN-08951 (03-00)

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

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

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

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.]

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

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

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.

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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