3
SAFETY
DEFINITIONS
CHASSIS GROUND Symbol
CAUTION: A condition that has the potential to cause
damage to property or instrument.
WARNING: A condition that has the potential to cause
bodily harm or death.
CAUTIONS
The LDTC LAB instrument has no user-serviceable
parts. Other than the fuses, the LDTC LAB instrument
is not designed to be maintained by the user nor does
it contain any parts that can be repaired by the user.
All maintenance and repairs must be performed by
Wavelength or the warranty will be void.
Use a soft cloth to remove dust from the LDTC LAB
instrument. Do not expose the LDTC LAB instrument to
any liquids, sprays, or solvents. To avoid electrical shock,
unplug the power cord before cleaning the instrument.
Before connecting to the power source, make sure the
correct cables for your area are set.
WARNINGS
Position the LDTC LAB instrument so that access to the
Main Power On/Off switch on the back panel is easily
accessed.
Do not use the LDTC LAB instrument if there is evidence
of damage from shipping; damaged equipment can
present significant safety hazards. If you suspect the
LDTC LAB instrument is damaged, contact Wavelength
technical support before attempting to operate the
instrument.
To avoid electrical shock, use the recommended earth-
grounded power cables and properly earth-grounded,
3-prong receptacles only. Failure to follow this precaution
can result in severe injury.
The instrument may not be operated at measuring
category II, III, and IV mains power circuits. In accordance
with EN 601010-1:2010, the instrument has been
designed without a rated measuring category and may
only be used at direct voltage circuits with up to 240 VAC
without transient overvoltages
Operating safety is no longer assured in the event of
modification or alteration. The instrument may only
be opened by authorized service technicians. Never
operate the instrument at a higher voltage than specified
in the technical data. The instrument may otherwise be
destroyed or permanently damaged.
To avoid injury, do not tell the engineers how to do their
jobs. Let them muddle through until they decide to read
the User Guide.
GENERAL
• Observe all Cautions and Warnings both in the User Guide and
on the instrument.
• This instrument is designed to be safe to at least the following
conditions: indoor use, 6500 ft (2000 m), 80% maximum
relative humidity for temperatures up to 31ºC and decreasing
linearly to 50% relative humidity at 50ºC, transient overvoltages
to Overvoltage Category 2, and environmental conditions to
Pollution Degree 2.
•
Use the LDTC LAB instrument as specified in this guide. If not,
the protection provided by this instrument may be impaired and
the warranty will be voided.
• The LDTC LAB instrument is intended to be used to control
thermoelectrics, resistive heaters, laser diodes and other similar
equipment. Please contact Wavelength Electronics for other
possible applications.
• The LDTC LAB instrument must not be operated in explosion
endangered environments.
• The equipment is not protected against liquid spills. Do not
install where chemicals are used or where liquids could be
spilled into the unit.
• The safety of any system that incorporates the use of the LDTC
LAB series instrument is the sole responsibility of the system
assembler. This includes assembly, mounting, location, special
ambient or application conditions, and connections within the
system.
•
Operating outside of the conditions specified in the User Guide
are not recommended for safety reasons.
• Proper setup in the end user’s environment includes:
»
Adequately sized thermoelectric and heatsink to properly
manage the heat dissipated by the load.
»
Securely mounted temperature sensor for accurate
temperature control.
»
Correct connection of the thermoelectric and laser.
»
Use of the ACTIVE LOCK connection to protect the load.
POWER CORDS
• The power cord acts as the power disconnecting device between
the AC mains and LDTC LAB instrument.
• This equipment is grounded through the AC power cord
grounding conductor.
• Use only the earth-grounded power cords that are
recommended in this user guide.
• Route power cords and other cables so that they cannot be
damaged.
• Position the LDTC LAB instrument in a location that makes it
easy to quickly disconnect the power cord.
•
To avoid fire hazard, use only the specified power cords with the
correct grounding, voltage, and current ratings.
FUSES
• Disconnect the power to the LDTC LAB instrument before
changing the fuses.
• To prevent damage to the LDTC LAB instrument when replacing
fuses, locate and correct the problem that caused the fuse to
blow before re-applying power.
•
To avoid fire hazard, use only the specified fuse with the correct
type number, voltage, and current ratings, and use only the
recommended replacement parts.
