VTM-2400 Installation and Operation Handbook
iii
Operator’s Safety Summary
WARNING: These instructions are for use by qualified personnel only. To reduce
the risk of electric shock, do not perform this installation or any servicing unless you
are qualified to do so. Refer all servicing to qualified service personnel.
Ensuring Safety
The unit should not be exposed to dripping or splashing, and no objects filled with liquids,
such as vases, shall be placed on the unit.
When the unit is to be permanently cabled, connect the protective ground conductor
before
making any other connections.
Operate built-in units only when they are properly fitted into the system.
For permanently cabled units without built-in fuses, automatic switches, or similar
protective facilities, the AC supply line must be fitted with fuses rated to the units.
Before switching on the unit, ensure that the operating voltage set at the unit matches
the line voltage, if appropriate. If a different operating voltage is to be set, use a fuse with
the appropriate rating. Refer to the Installation Instructions.
Units of Protection Class I with an AC supply cable and plug that can be disconnected
must be operated only from a power socket with protective ground contact:
−
Do not use an extension cable—it can render the protective ground connection
ineffective.
−
Do not intentionally interrupt the protective ground conductor.
−
Do not break the protective ground conductor inside or outside the unit or loosen the
protective ground connection; such actions can cause the unit to become electrically
hazardous.
Before opening the unit, isolate it from the AC supply, and then ensure that
−
Adjustments, part replacements, maintenance, and repairs are carried out by
qualified personnel only.
−
Safety regulations and rules are observed to prevent accidents.
−
Only original parts are used to replace parts relevant to safety (for example, the
power on/off switches, power transformers, and fuses).
Replaceable fuses can be hazardous when live. Before replacing a fuse, disconnect the AC
power source.
