Karel DS200, Technical Reference And Installation Manual

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DS Series PBX Technical Reference And Installation Guide
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The points, which the authorized technical personnel should pay attention to regarding the
air shutter filter that is located under the DS200 system cabinet, are as follows:
- The air shutter filters that are at the top of the cabinet must be removed from their
place and cleaned every month, and they should be changed every six months.
(These time periods may vary depending on the environmental conditions in the
installation site.)
- Covers of the cabinets must always be kept closed.
- The grids of the ventilation fans that are on top of the cabinet must not be blocked by
putting objects on them.
- Since diameters of the grid holes are quite small in accordance with the EN60950
standard, dust accumulation may block the grids in time. Hence, the technical
personnel in charge should check these grids and if it is necessary, they should turn
off the fans, remove the upper cover after unscrewing it, and clean those grids by
spraying pressurized air or using a brush with hard bristles.
The air vents that are on the top and bottom covers of the DS200S and DS200M systems
must not be blocked by any means, and nothing must be placed on top of the exchanges,
which contains acid, fluid, powder, dust or any other substance that might infiltrate into the
exchange through the air vents.