Gilson GA-6 Operating Manual

OPERATING MANUAL

GilSonic AutoSiever

GA-6

PHONE: [phone] P.O. Box 200, Lewis Center, Ohio 43035-0200

740-548-7298 E-mail: [e-mail] Product Web Page: www.globalgilson.com

Rev: 01/2019

FAX: [phone]
740-548-5314

Gilson Company, Inc. GilSonic AutoSiever: GA-6

Table of Contents

Page

1.0 Introduction ..........................................................3

1.1 Sonic Sieving to 5µm with 3in Sieves...................................3

1.2 Unique Features.......................................................3

1.3 How it Works ..........................................................3

2.0 Safety Instructions ....................................................4

3.0 Uncrating & Setup..................................................... 4

4.0 Control & Display Functions............................................ 5

4.1 Programmable Control Keypad ........................................5

4.2 Tapping Action Control Buttons........................................5

4.3 Test Phase Indicator Lights.............................................6

4.4 Operating Mode Indicator Lights.......................................6

5.0 Preparing the Sieve Stack Assembly ....................................7

6.0 Establishing Test Sequences ........................................... 8

6.1 Setting Maximum Amplitude ..........................................9

6.2 Establishing Phase Times ..............................................9

7.0 Performing a Test.....................................................10

8.0 Care & Handling of Sieves.............................................10

8.1 Precision Sieves ......................................................10

8.2 Standard Sieves ......................................................10

9.0 Monitoring Performance..............................................10

10.0 Maintenance & Repair ................................................11

10.1 General Repair .......................................................11

10.2 Speaker Replacement ................................................11

10.3 Fuse Replacement....................................................11

10.4 Lamp Replacement...................................................11

11.0 Appendix: Additional Information ....................................12

12.0 Replacement Parts ...................................................13

Page 2

Gilson Company, Inc. GilSonic AutoSiever: GA-6

GilSonic AutoSiever

The speed and accuracy of sonic sieving coupled with microprocessor control make

the AutoSiever the ultimate instrument for laboratory sieving as ne as 5µm.

1.0 INTRODUCTION

1.1 Sonic Sieving to 5µm with 3in Sieves

Useful Range with most Powders

• Wire-woven sieves from No.20 (850µm) to No.635 (20µm)

or precision electroform nickel mesh 150µm to 5µm.

• Electroformed mesh sizes of 150µm and larger are available

for ±2µm precision when needed.

• Larger wire-woven sieves from No.3-1/2 to No.20 are avail-

able for low density materials.

All sieves employ clear acrylic frames to allow viewing of the
sieving process.

1.2 Unique Features

• Electronic controls give exact repeatability of programmed
time and amplitude sequences.

• Amplitude may be set precisely with a digital LED

0-99 even-increment scale. Memory stores up to 10 pro-

grams with instant recall.

pulses per minute. Addition of tapping actions helps clear
blinding of near-sized particles and assists in deagglomerating
samples with electrostatic, hygroscopic, or other adhesion
problems.

The AutoSiever's control panel and ten program memory help
insure exact repeatability of sequences of time and vibration
amplitude, plus user-selection of vertical and horizontal tapping.
Desired maximum amplitude is determined in manual mode by
viewing the action of the largest particles in each sample type.

Each program has timed segments for buildup to desired
maximum amplitude (Time A), hold time at maximum (Time B),
then down-ramp to zero (Time C). Amplitude is displayed on
a 0-99 digital LED scale. Programs vary with sample types and
particle size range. Once in memory, the test sequences can
be rerun on demand to repeat testing of similar samples. All
switch setting as well as time-amplitude sequences are stored
for each of ten program memory slots where they are available
for instant recall and use without resetting any controls.

• Built-in vertical or alternating vertical and horizontal tap­ping helps clear sieves and deagglomerate samples.

• Large digital LED display and 8 LED mode indicators tell
operator at a glance the mode or function in progress.

NOTE: Test times vary with size, density, texture, and

quantity of samples. Five minutes is typical, but sieving
time can be as little as 30 seconds under favorable condi­tions.

1.3 How It Works

The AutoSiever is designed to automatically take full advantage
of the unique capabilities of sonic sieving. Intensity of sieving
action is varied by changing the amplitude of sonic pulses.

Sonic sieving uses a vertically oscillating air column to lift
particles, then carr y them back against mesh openings at 3,600

Page 3

GA-6 Sonic Sieving Action

Flexible

Diaphragm

Sieves

Flexible Wall

Fines Collector

Figure 1.3

Gilson Company, Inc. GilSonic AutoSiever: GA-6

2.0 SAFETY INSTRUCTIONS 3.0 UNCRATING & SETUP

You are responsible for the safe operation of this device, and
maintaining this equipment in compliance with these instruc­tions. You must read and completely understand these operating
and safety instructions before using this machine.

DANGER!: This machine operates on electric current.

Improper operation could result in electric shock, elec­trocution, or an explosion.

1. The GA- 6 AutoSiever is congured to operate on 115V/60Hz

or 230V/50Hz power supplies, as noted in the assembly
instructions. Make sure that the Voltage Selector Switch
on the back of the unit is set to operate with the proper
voltage supply. This unit is NOT explosion-proof.

2. ALWAYS check electrical wiring for loose connections and

for pinched or frayed wiring.

3. ALWAYS use a properly congured three-pronged plug, as

supplied with the unit. Connect the machine to a properly­wired, three-pronged receptacle. Make sure the cord is
routed safely.

After inspecting the shipment for external damage, immediately
unpack the Gilsonic AutoSiever and inspect for concealed
shipping damage. Repor t damage immediately to the shipping
company. Retain all shipping records and packing materials
until proper operation is conrmed.

Place the GilSonic AutoSiever on a stable, level surface at a
convenient working height.

To access the Sieving Chamber (see Figure 3.0), lift the sliding
door and lock the Sieve Stack Assembly (see Figure 5.1) by pulling
down on the Sieve Stack Locking Bars until they snap onto the
top ring of the Fines Collector Holder. Pull the Assembly out to
remove it from the AutoSiever. The Diaphragm and Fines Col­lector are part of the Sieve Stack Assembly, but are packaged
separately for shipping.

On the back of the AutoSiever, nd the Voltage Selector and
insure it is set to match the voltage of your power supply as
shown in Figure 3.1. The 110V and 220V settings will work with
either 50Hz or 60Hz electrical supplies. Connect the supplied
3-wire grounded power cord to the back of the AutoSiever and
plug into a grounded electrical outlet.

4. ALWAYS disconnect and lock-out power supply before

performing maintenance and repairs.

5. NEVER operate this device without having all covers and

case in place.

6. ALWAYS unplug or disconnect machine from the power

source when the unit is not in operation.

Sieving Chamber

Stack

Locking

Ring

Stack

Switch

Horizontal

Tappers

Chamber

Light

Stop

Page 4

Figure 3.0