Metrohm 827 pH lab - Manual (Page 13)

1 Introduction
826/827 pH meter, Instructions for Use
5
1.4 Safety information
Warning!
This instrument should only be used in accordance with the informa-
tion given in these installation instructions.
1.4.1 Electrical safety
Please observe the following guidelines:
•
Only qualified Metrohm technicians should carry out service work
on electronic components.
• Open the housing only in order to change the batteries. There are
no components inside the housing that the user can service or ex-
change. The changing of the batteries is described in Section 8.4.
Electrical safety when handling the pH meter is guaranteed within the
framework of the IEC 61010-1 Standard. The following points must be
observed:
Danger!
Please make sure that the external power supply is always kept dry.
Protect it against direct liquid contact.
Warning!
Electronic components are sensitive to electrostatic charges and can
be destroyed by a discharge. Always switch off the pH meter before
making or breaking electrical connections on the rear panel of the in-
strument.
1.4.2 General handling rules
Handling solutions
Warning!
When working with water or other solutions in the immediate vicinity of
the pH meter please avoid excessive liquid splashes on the instru-
ment housing or power supply. Any such splashes must be removed
as quickly as possible in order to prevent the liquid from entering the
instrument or the power supply.
Do not clean the plexiglass display with organic solvents like e. g.
acetone.