Vertiv™ | Liebert® LDMF™ Distribution Monitoring User Manual | 1
IMPORTANT SAFETY INSTRUCTIONS
ELECTROMAGNETIC COMPATIBILITY—The Liebert LDMF as a functional component of a
power distribution and supply product complies with the limits for a Class A Digital Device,
pursuant to Part 15 of FCC rules. Operation is subject to the following two conditions:
• This device must not cause harmful interference, and
• This device must accept any interference received, including interference that may cause undesired
operation.
Operating this device in a residential area is likely to cause harmful interference that users must
correct at their own expense.
Liebert LDMF as a functional component of a power distribution and supply product complies
with the requirements of EMC Directive 2004/108/EC and the published technical standards.
Continued compliance requires installation in accordance with these instructions and use of
accessories approved by Vertiv.
WARNING
As with all types of electrical equipment, dangerous voltages exist within the equipment
where the Liebert LDMF Distribution Monitor components are installed. For maximum
safety, ensure power is removed and circuit breakers/disconnects are tagged/locked out
per all applicable national, state and local electrical codes prior to working inside
equipment.
The area around the equipment must be free of any debris or standing water.
All power and control wiring must be installed by a qualified electrician in accordance with
the NEC and all applicable national, state and local codes.
ONLY qualified service personnel should perform maintenance and/or service on the
Liebert LDMF system. When performing maintenance and/or service on any component,
verify test equipment is insulated and has been inspected prior to use.
To avoid damage to the circuit boards, personnel handling these components should be
wearing an electrostatic discharge strap or other approved protective device.
When replacing or installing a solid core Current Transformer (CT), power must be
removed from equipment to prevent damage to the CT and/or circuit board. If the CT is a
split-core design, follow proper electrical safety procedures and ensure the CT wires are
connected to the applicable burdening circuit before attaching the CT around the
conductor.
These safety precautions are to be used in conjunction with NEC and local/state electrical
code.
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