GE GM-1 Manuel d'utilisateur télécharger pdf

i 56-2853-00 AE, 2002-12 • p1

instructions

Gradient Mixer GM-1

1. Introduction

The Gradient Mixer GM-1 (120 V, Code No. 19-0495-01,

230 V Code No. 19-0485-01) consists of two identical

reservoirs mounted on a base plate; connection between the

reservoirs is made via a valve. Mounted above the mixing

reservoir is a motor unit which drives a stirrer blade. The

outlet from the mixing reservoir to the column is fitted with

a flow control valve, FCV-1. The Gradient Mixer is

conveniently supported on a laboratory stand. Capillary

tubing, 2 m, is also supplied.

2. Safety

Warning!

When using hazardous chemicals, all suitable protective

measures such as protective glasses, must be taken.

3. Unpacking

Unpack the equipment carefully and check the contents of

the carton against the packing list.

4. Description

THE BASE PLATE (11)* is a precision machined

polypropylene block on which the reservoir cylinders (7) are

mounted.

Sealing between the base plate and the cylinders is provided

by O-rings (8).

THE RESERVOIR CYLINDERS (7) are straight

polymethylpentene tubes threaded at one end and with air

inlets at the other end. Each cylinder has a capacity of 300 ml

and is graduated to 250 ml at 25 ml intervals to give a rapid

check of the volume of liquid remaining in the reservoirs.

The mixing reservoir carries the motor unit (1, 2) and the

other reservoir is fitted with a snap-on lid (3).

THE MOTOR UNIT (1, 2) consists of a fully encapsulated

low speed 250 or 300 rpm synchronous motor mounted in

polypropylene housing. A phasing condensor ensures that

the direction of stirring is always the same and that the

stirrer blade (6) lifts the liquid entering the mixing reservoir.

The motor unit is supplied for operation from 100–120 or

220–240 V AC, 50 or 60 Hz.

THE STIRRER BLADE (6) is secured to the motor axle by a

nylon screw (5). It is unnecessary to remove the screw to

release the stirrer blade.

THE CONTROL VALVE (12) regulates the flow of liquid

between the two reservoirs. It is fully open when screwed out

one complete revolution from the closed position.

THE FLOW CONTROL VALVE (18) is a needle valve

designed for shut-off as well as flow control. The valve

nipple accepts capillary tubing 1.6–1.9 mm o.d. Eluent flow

is regulated with the large knob (A). The line on this knob

and the markings on the valve housing can be used as a flow

rate guide. The valve can thus be opened to a previously

determined position to obtain a given flow rate. To obtain

reproducible flow rates the valve should always be returned

to the shut position before setting.

THE STAND MOUNT (21) may be used to support the

Gradient Mixer on a laboratory stand. When not required,

it may be removed from the base plate (11) by unscrewing

the retaining knob (20).

5. Installation

Connection of tubing to the flow control valve

1. Cut the tubing cleanly at a 45° angle.

2. Remove the screw cap and slip it over the tubing.

3. Remove the rubber cone with the help of the metal

stopper.

4. Push the tubing through the rubber cone until it projects

about 1 cm.

5. Seat the tubing in the nipple. Slide the cone along the

tubing, into the nipple.

6. Finger tighten the screw cap.

* Numbers refer to the enclosed Spare Parts drawing.

1 2 3 4

Résumé du contenu

Page 1 - Gradient Mixer GM-1

i 56-2853-00 AE, 2002-12 • p1instructions Gradient Mixer GM-11. IntroductionThe Gradient Mixer GM-1 (120 V, Code No. 19-0495-01,230 V Code No. 1

Page 2 - 8. Technical specification

i 56-2853-00 AE, 2002-12 • p2Dismantling the Gradient MixerThe reservoir cylinders (7), control valve (12) and flowcontrol valve (18) may be remove

Page 3 - 9. Spare parts

i 56-2853-00 AE, 2002-12 • p3DetaiI No. Designation Code No. Material No. per pack 1 Motor unit (complete with 18-1121-66 A* 1detail Nos. 3, 4, 5)

Page 4

i 56-2853-00 AE, 2002-12 • p4to order:Asia Pacific Tel: +852 2811 8693 Fax: +852 2811 5251 Australasia Tel: +61 2 9899 0999 Fax: +61 2 9899 7511 Au

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GE GM-1 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Mélangeurs GE GM-1. GE GM-1 User's Manual Manuel d'utilisatio

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