Important Safety Instructions; User Responsibility; Mains Connection Grounding; Speaker Output Hazard - Lab.gruppen PLM series Operation Manual

3. Warnings

3.2 Important Safety Instructions

Before using your PLM, be sure to carefully read the applicable items of this Operation Manual and
the Safety Instructions.
1. Keep this manual for future reference.
2. Heed all warnings.
3. Follow all instructions.
4. Do not use this unit near water.
5. Do not spill water or other liquids into or on the unit. Do not operate the unit while wet or standing in liquid.
6. Clean only with dry cloth.
7. Do not block the air intake or exhaust ports. Install the unit in accordance with the instructions.
8. Do not operate the unit near heat producing devices such as radiators, heat registers, stoves or other apparatus that produce heat.
Always operate the unit with the chassis ground wire connected to the electrical safety earth. Do not defeat the safety purpose of
a grounding-type plug. A grounding-type plug has two pins and a third grounding prong. The third prong is provided for your safety.
If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
9. Connect only to AC power outlets rated 100-120 V or 200-240 V, 50-60 Hz as dictated by the unit's voltage configuration.
10. Do not use this unit if the power cord is broken or frayed. Protect the power cord from being walked upon or pinched, particularly
at the plug and the point where it exits from the apparatus.
11. Only use accessories specified by the manufacturer.
12. The unit is intended to use in a 19" rack. Follow the mounting instructions. When a rack on wheels is used, use caution when
moving the loaded rack to avoid injury from tipping over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Do not connect the unit's outputs in parallel or series with any other unit's output. Do not connect the unit's output to any other
voltage source, such as battery, mains source, or power supply, regardless of whether the unit is turned on or off.
15. Do not run any of the unit's outputs back into another channel's input.
16. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way such
as:
▸ Power-supply cord or plug is damaged.
▸ Liquid has been spilled into the unit
▸ An object has fallen into the unit
▸ The unit has been exposed to rain or moisture
▸ The unit does not operate normally
▸ The unit was dropped or the chassis is damaged
▸ Do not remove top or bottom covers. Removal of the covers will expose hazardous voltages. There are no user serviceable parts
inside and removal may void the warranty.
17. An experienced user shall always supervise this professional audio equipment, especially if inexperienced adults or minors are
using the equipment.
18. The mains plug is used as the disconnect device and shall remain readily accessible. If the mains plug is not readily accessible due
to mounting in a 19" rack, then the mains plug for the entire rack must be readily accessible.
19. The US National Differencescl.16.3 requires that network cables must be flame rated VW-1.

3.3 User Responsibility

3.3.1 Mains connection grounding

Your PLM must be connected to a grounded socket outlet.

3.3.2 Speaker output hazard

PLMs are capable of producing hazardous output voltages. To avoid electrical shock, do not touch any
exposed speaker wiring while the PLM is operating. The external wiring connected to the speaker
terminals shall be installed by a qualified person, or ready-made leads or cords of appropriate capacity shall
be used.
As the power output channels produce high voltage, do not connect or disconnect speaker cables
when the mains power is on.
8
PLM Series Operation Manual rev 1.1.3