Operating Manual

YM5 Permanent Magnet Yoke

Faraday Road, South Dorcan Industrial Estate, Swindon, SN3 5HE, UKTelephone: + 44 (0)1793 524566 Fax: +44 (0)1793 490459 Email: sales.eu@magnaflux.com Web: eu.magnaflux.com

Bahnhofstr 94-98, 73457 Essingen, Deutschland Telephone: +49 (0) 7365 81-0 Fax: +49 (0) 7365 81-449 Email: sales.de@magnaflux.com Web: eu.magnaflux.com/de

3.2 ACCESSORIES

Yoke Test Weight (18kg)Part number: 026T018A

YM5 Recharging UnitIf it is not convenient to return your YM5 Yoke to Magnaflux for re-magnetising, we have a specially-designed fixture which allows you to re-magnetise it yourself.The unit is simple to operate, using a battery, discharging through coils which have the poles of the YM5 Yoke within them.

YM5 Yoke recharging unit (batteries NOT included) - Part number: 007E100 YM5 Yoke recharging unit, including batteries - Part number: 07E100B

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3. RECOMMENDED PRODUCTS

3.1 CHEMICAL CONSUMABLES

PREPARED INKSFlash point

(PMCC)Viscosity(mm2/s)

Density (g/cm3)

Particle size (µm)

Settlement volume

OIL-BASED (high-flash, low-odour kerosene base)

410HF 93 oC 3.45 0.81 7 - 25 0.12% V/V

14HF 93 oC 3.45 0.81 2 - 25 0.25% V/V

7HF 93 oC 3.45 0.81 0.6 - 2.5 2.5% V/V

WATER-BASED

WB-12 N/A N/A 1.2 7 - 9 0.1 - 0.4 ml

MF-655 WB N/A N/A 1.1 3 - 5 0.13 - 0.21 ml

DRY POWDERSMAGNAVIS dry powders have closely-controlled particle size and shape, and come in a range of colours to give the best possible contrast on a wide variety of finishes. For best results, the powder should be cloud-applied near the surface while the current is flowing.

Maximum working temperatures:MAGNAVIS® 1 Grey 315 oCMAGNAVIS® 8A Red 175 oC

CONTRAST PAINTUse MAGNAVIS® WCP-2 White Contrast Paint when the contrast between the test surface and the ink/powder is not clear enough for inspection. Apply a thin coating for WCP-2 to the surface prior to testing.

SPECIFICATIONSMAGNAGLO and MAGNAVIS concentrates, prepared inks and dry powders meet the requirements of ASTM E1444. Our oil-suspended inks and concentrates meet AMS specifications, plus appropriate industrial and Government specifications, Certifications are available on request.

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Certificate of Conformity

YM5 Serial Number:

Date of Manufacture:

Certified that the above item conforms to and meets the require-ments of the following:

Specifications

ASME V ART7EN-ISO 9934-3MIL-STD-271F(SH)

Certificate is issued under the auspices of the Equipment Product Manager:

Magnaflux (A Division of ITW Ltd),Faraday Road, South Dorcan Industrial Estate, Swindon, SN3 5HE, UK

Tel: +44 (0)1793 524566 Fax: +44 (0)1793 490459 Email: sales.eu@magnaflux.com www.eu.magnaflux.com

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Item Description Part number Quantity

1 Contacts 6975A3 2

2 Magnet 001M003 2

3 Arm 14187A3 2

4 Handle 6976A3 2

5 Spring, disc type 010S024 12

6 Retainer 14185A3 2

7 Keeper bar 6493A3 1

WARNING: DO NOT REPLACE ANY PARTS WITH ANYTHING OTHER THAN THOSE RECOMMENDED BY MAGNAFLUX.

2.1 PARTS LIST1. OPERATING THE YM5 YOKE1. Place the Yoke on the workpiece perpendicular to the direction of the cracks. The double-jointed articulated legs can be moved in two directions at each joint, and the pole pieces rotate.

2. Adjust the spacing between the legs to between 25 and 250mm. If the part is an irregular shape, contour the feet to ensure a good flat contact point.

3. Apply the inspection medium (wet or dry). Surface crack indications will form immediately.

4. Repeat as required, moving the Yoke over the part. Each placement of the Yoke will find cracks in a 150 x 150mm area.

Magnetic contact exists only between the Yoke and the test piece, so arcing on the part itself is impossible. However, to avoid potential damage, care must be taken when presenting the Yoke to the workpiece.

You can check the strength of the Yoke by applying inspection medium to the keeper bar,which has artificial defects. Only remove the keeper bar to carry out inspection work.

IMPORTANT NOTE: If you take the YM5 apart, it will lose its magnetic strength.

2. TECHNICAL SPECIFICATION

Magnet elements Magloy 1Field strength with poles together 230 oC

Supplied with a keeper bar Yes

Typical weight 3 kg

Lifting power Not less than 18 kg