Safety Instructions - Mettler Toledo DCC1000e Handbuch

1 Safety Instructions

This manual includes safety information with the following designations and formats.
Definition of equipment and documentation symbols and designations
WARNING: RISK OF ELECTRICAL SHOCK.
CAUTION: Possible instrument damage or malfunction.
NOTE: Important operating information.
On the instrument indicates: There is alternating current present.
The following is a list of general safety instructions and warnings. Failure to adhere to these
instructions can result in damage to the equipment and/or personal injury to the operator.
– Follow all warnings, cautions, and instructions indicated on and supplied with this product.
– Install equipment as specified in this instruction manual. Follow appropriate local and
national codes.
– Use only factory documented components for repair. Tampering or unauthorized
substitution of parts and procedures can affect the performance and cause unsafe
operation of your process as well as void factory warranties.
– Protective covers must be in place unless qualified personnel are performing maintenance.
Do not touch components under the protective cover until boiler reaches ambient temperature.
– If this equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment against hazards may be impaired.
WARNINGS:
– Installation of cable connections and servicing of this product require access to
shock hazard voltage levels.
Main power must employ a switch or circuit breaker as the disconnecting device
for the equipment. The breaker should be properly labeled and easily accessible
for system isolation by service personnel. The circuit breaker shall have a maxi-
mum of 20 amp rating.
– Electrical installation must be in accordance with the National Electrical Code
and/or any other applicable national or local codes.
– Safety and performance require that this instrument be connected and properly
grounded through a three-wire power source.
– PROCESS UPSETS: Because process and safety conditions may depend on con-
sistent operation of this equipment, provide appropriate means to maintain oper-
ation during maintenance, replacement, or equipment calibration.
When replacing fuses use only the specified replacement type.
NOTE: The M800 transmitter relays will always de-energize on loss of power,
equivalent to normal state, regardless of relay state setting for powered operation.
Configure any control system using these relays with fail-safe logic accordingly.
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