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Replacing the Y-Axis Scale Servicing In structions HS-50 01/99 Issue 18 2 Special safety instructio ns when working in the vicinity of po werful magn etic fields RISK T O HEAR T P ACE-MA KER W EARER S 2 The perm anent ma…

Servicing Instructions HS-50 Replacing theY-Axis Scale

01/99 Issue

1 Points to note before starting servicing work

à End all placement operations on the placement system.

à Undock the component changeover tables (see section 8.1 of the Service Manual)

à Shut down the WINDOWS NT operating system correctly, otherwise you may experience pro-

blems when restarting the placement system or you could loose data.

à Switch the placement system off at the main switch.

à Disconnect the placement system from the power supply.

à Secure the placement system to prevent it being switched on again and put up a sign to indi-

cate that servicing work is in progress (see section 2, Operational Safety of the Service Ma-

nual).

à Open the protective covers and move the head into a comfortable working position.

WARNING

To avoid damaging the placement head, ALWAYS observe the following points when moving

the gantry: 1

– NEVER move the gantry by pushing with your hands against the placement head.

– NEVER move the gantry by pushing with your hands against or pulling the recessed grip of

the placement head. The placement head may lose its settings or be damaged on account

of the high braking force of the y gantry drive.

– NEVER push the gantry while the z axis is lowered.

– Take hold of the cast iron part of the x axis and then move the gantry.

Replacing the Y-Axis Scale Servicing Instructions HS-50

01/99 Issue

2 Special safety instructions when working in the

vicinity of powerful magnetic fields

RISK TO HEART PACE-MAKER WEARERS 2

The permanent magnets of they axis have an extremely powerful magnetic field. Personnel wear-

ing heart pace-makers are NOT permitted to stand in the vicinity of permanent magnets (see

item1and2inFig.2-1). 2

CAUTION POWERFUL MAGNETIC FIELD 2

à Do not wear watches in the vicinity of permanent magnets since they can be damaged.

à Do not bring magnetic data media, check or credit cards near permanent magnets - the data

on the data media may be erased by the magnetic field of the permanent magnets.

WARNING RISK OF CRUSHING 2

Do not approach permanent magnets when carrying metal objects made of iron, steel or nickel.

The powerful force of attraction may cause fingers to be crushed. 2

Servicing Instructions HS-50 Replacing theY-Axis Scale

01/99 Issue

Fig. 2 - 1 Position of the permanent magnets of the y axis linear drives

KeytoFig.2-1

1A, 1B, 1C, 1D Permanent magnets for the y axis linear drive for main gantries 1 and 4 2

2A, 2B, 2C, 2D Permanent magnets for the y axis linear drive for main gantries 2 and 3 2

T Transport direction 2