Putting Into Service And Operation; Repairs - Riester HL 150 Manual Del Usuario

5.

Putting into service and operation

Make all cable connections before turning on the instrument.
Connecting the mains cable
Only use the mains cable supplied to connect the instrument to the supply voltage.
Ensure that the mains voltage indicated on the instrument is correct. Only connect the instrument to an earthed contact electrical socket.
Connecting the fibre optics
Please ensure that the correct adapter (Storz) is fitted to your fibre optics.
You can also purchase the appropriate adapter from us providing details of the manufacturer of the fibre optics (see replacement parts
section 9).
Caution: Parts within the light source can be damaged by using an inappropriate adapter. A false adapter
always leads to light loss.
Connecting the potential compensation lead
Connect the potential compensation connection to the central potential compensation of the operating theatre or the instrument trolley with
a suitable cable.
Important operating information
After switching on the light source and the lamp has started up, the instrument should remain switched on for at least 1/4 hour. A shorter
period considerably reduces the service life! After switching off the light source, it may be switched on again immediately.
Possible maintenance and cooling down periods are not required. After all cables have been connected, switch on the instrument at the
mains switch. The green light inside the switch lights up and the lamp goes on immediately. You may now work with the light
source. Adjust the required brightness with the knob (2). No further adjustments to the instrument are necessary during operation.
6.

Repairs

The information contained in this chapter are only intended for authorised specialist personnel who have received instruction and have a
grasp of the knowledge required and the safety precautions for the repair of electronic instruments.
The manufacturer accepts no liability for repairs and modifications, which are carried out by non-authorised specialist personnel.
Upon request, the manufacturer will provide available circuit diagrams, detailed replacement part lists, descriptive information, adjusting
instructions and other documents, which are of use to the correspondingly qualified personnel of the user who have been authorized
accordingly by the manufacturer for the repair of instrument parts, which are described by the manufacturer as repairable.
The availability of technical documents about the instrument does not in itself represent an authorisation by the manufacturer for techni-
cally trained personnel to open or repair the instrument. Excluded in this respective are the interventions described in the text of these
operating instructions.
Exchanging the mains fuse
The mains fuse is located at the rear of the instrument, on the right of the mains connection in a small fuse compartment.
• Pull out the mains plug!
• Loosen the fuse compartment by freeing the clips on both sides of the compartment with a pointed object and pull the
compartment out.
• Remove the fuses.
• Check the fuses
• Burnt out fuses can be recognized by blackening of the glass bulb, a visible break in the fuse wire or, if appropriate, by
measuring the continuity of the fuses with an ohmmeter.
• Replace the respective fuses.
• Put the fuse compartment back into the instrument
Now put the instrument back into operation. If you have replaced a defective fuse with a new one and it burns out again, this points to a
fault in the instrument. In such cases, send the instrument to us for checking.
Exchanging the lamp
Once the service life of a lamp has been reached, it has to be exchanged with a new one. The lamp is placed under a particularly heavy
load when the light source is switched on and off. For this reason, it also tends to burn out when the light source is switched on and off.
In order to exchange the lamp, proceed as follows:
• Pull out the mains plug!
• Put the light source on its head on a soft cloth or something similar.
• Loosen the tightening screws at the base of the instrument and remove the base plate.
• If the lamp has just been in operation, it will still be very hot.
• Leave the lamp to cool down before continuing.
• Pull the lamp upwards out of the fixture.
• Carefully pull off the connector from the lamp.
• Now push the connector onto the new lamp.
• Replace the new lamp back into the fixture and push it down until it snaps into place. Ensure that the small „lug" on the reflector
sits properly in the respective guide.
• Put the lid back onto the instrument and close it with the screws. Pay particular attention that the earth cable of the lid has not
become loose.
• Switch on the light source and check correct functioning.
When exchanging the lamp, the following work should also be carried out:
Remove dust from the inside of the casing and the fan blades. Check and clean, if appropriate, the heat-absorbing filter (openings on the
side of the casing) with a soft cloth or lens tissue and a little alcohol.
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