1.9.2 General
This product is a Safety Class 1 instrument (all units except CoBrite DX1, provided with a
protective earth terminal). The protective features of this product may be impaired if it is used in
a manner not specified in the operation instructions.
1.9.3 Environment Conditions
This instrument is intended for indoor use in an installation category II, pollution degree 2
environments. It is designed to operate at a maximum relative humidity of 95% and at altitudes
of up to 2000 meters.
Refer to the specification tables for the ac mains voltage requirements and ambient operating
temperature range.
Note: Before connecting electrical power to the unit, make sure the unit could
acclimatize to ambient temperature for at least 2 hours to avoid damage by i.e.
condensed humidity on electrical parts inside the unit.
1.9.4 Fuse Replacement
For continued protection against the possibility of fire, replace the fuse only with a fuse of the
specified voltage, current and type ratings.
1.9.5 Before Applying Power
Verify that all safety precautions are taken. The power cable inlet of the instrument serves as a
device to disconnect from the mains in case of hazard. The instrument must be positioned so
that the operator can easily access the power cable inlet. When the instrument is rack mounted
the rack must be provided with an easily accessible mains switch.
1.9.6 Maximum ratings
ALWAYS operate the unit within the maximum ratings. Ignoring these limits may result in
permanent damage to the unit and loss of warranty.
1.9.7 Ground the Instrument
(this section does not apply to DX1 type chassis)
To minimize shock hazard, the instrument chassis and cover must be connected to an electrical
protective earth ground. The instrument must be connected to the ac power mains through a
grounded power cable, with the ground wire firmly connected to an electrical ground (safety
ground) at the power outlet. Any interruption of the protective (grounding) conductor or
disconnection of the protective earth terminal will cause a potential shock hazard that could
result in personal injury.
1.9.8 Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable gases or fumes.
1.9.9 Do Not Remove the Instrument Cover
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must be made only by qualified personnel.
Instruments that appear damaged or defective should be made inoperative and secured against
unintended operation until they can be repaired by qualified service personnel.
Opening the instrument will result in loss of all warranty given for the instrument and may exhibit
lethal health risks.
Keep away from live circuits inside the equipment. Operating personnel must not remove
equipment covers. Only factory authorized service personnel or other qualified service
personnel may remove equipment covers for internal subassembly or component replacement
or any internal adjustment. Do not install substitute parts or perform any unauthorized
modification of the equipment or the warranty may be voided.
1.9.10 Ventilation
Keep a space of 30 cm or more between the rear side of the device and any other objects such
as walls to guarantee sufficient cooling of the device.
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