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3
Cautionary notes regarding installation
No changes whatsoever may be made to the scale or the power supply unit.
Service work and repairs must be carried out only by personnel authorized by METTLER
TOLEDO.
Check that the scale and power supply unit are in perfect condition with regard to safety
before putting into operation for the first time and at least after every 3 years of service.
4
Installation on the scale
In all installation work, refer to the appropriate control drawing:
– Installation drawing PS-EX1 21201489 / 230 V according to CENELEC
– Control drawing 21201484A for USA
– Installation drawing 21202517A for Canada
4.1 Attaching power cable to the scale
2
1
Perform the installation only as de-
scribed in these instructions and in the
appropriate control drawing.
It is essential to comply with national
regulations regarding grounding and
connection to the power supply.
• Turn the scale on its side so that the
connection socket (1) on the bottom is
accessible.
• Route the blue cable from the PS-EX1
Power Supply Unit to the scale and plug
connector into the scale.
• Use a grounding cable (cross-section
≥ 1 mm
2
) to connect the grounding
screw (2) to the nearest connection of the
grounding system of the building electri-
cal installation.
• Turn the scale back to the upright posi-
tion.
6
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