Cautionary Notes / Power Supply; Power Supply - Mettler Toledo AL54 Bedienungsanleitung

Preparations for weighing below the balance
To carry out weighing operations below the balance, get rid of the special cover on the underside of the balance. (Note: never put
the balance without the protective cover over its cone down on its head, only on its side!). This exposes the opening for the
hanger, making weighing below the balance possible.

2.3 Cautionary notes / Power supply

2.3.1 Power supply

Notes
To achieve accurate results with analytical balances (AL), they must be left switched on for at least 60 minutes to reach operating
temperature before carrying out the first weighing operation.
2.3.2 Battery operation (compact models only)
Models in the compact (PL-S) line of balances can also be operated independently of the AC power supply by using their batteries.
To do this, always fit the protective cover over the weighing cell cone first, then open the cover of the battery compartment on
the underside of the balance and insert the batteries.
Caution: ensure correct polarity (as specified inside the battery compartment).
Close battery compartment again.
Recommended battery type: AA (LR6) 1.5 V alkali-manganese.
NiMH (nickel-metal hydride) rechargeable batteries, which are recharged in an external battery charger, can be also be used. The
intervals between recharging are not as long as the service life of a nonrechargeable battery.
Antitheft device
Models in the L/L-S balance line are provided with a lug for attaching an antitheft
device (see optional equipment in Section 6.4).
• L/L-S balances must not be operated in hazardous areas with the standard-
supply AC adapter.
• Before connecting the AC adapter, verify that the voltage printed on it corresponds
to the local AC power supply voltage. If this is not the case, please contact your
local METTLER TOLEDO dealer.
• Only use these balances in a dry environment.
• For use with CSA Certified (or equivalent approved) power source, which must
have a limited and SELV circuit output.
Power supply
➞ Plug the AC adapter into the AC adapter socket on the balance, and connect to the
power supply.
➞ The balance performs a self-test. This test is finished when "OFF" appears.
➞ Press the «On» key briefly: the balance is in operational readiness. Before any
work is performed with the balance, it must be adjusted (Section 2.4).
When the balance is operating on its batteries, the border around the battery symbol
in the display lights up. The number of segments that are lit is an indicator of battery
condition (3 = fully charged, 0 = discharged). When the batteries are almost
completely discharged, the last segment flashes.
Startup
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