Symbols Used; Safety Information On The Product; Definition Of Terms; Intended Area Of Use - GEM 620 Series Installation, Operating And Maintenance Instructions

2.3

Symbols used

Danger - hot surfaces!
Danger - corrosive materials!
Danger from spring pressure!
Hand: indicates general information
and recommendations.
Bullet point: indicates the tasks to
G
be performed.
Arrow: indicates the response(s) to
®
tasks.
Enumeration sign

2.4 Safety information on the
product
Antrieb steht unter Federdruck
Actuator under spring pressure
Actionneur sous pression par ressort
1 Actuator under spring
pressure.
Only open the actuator
G
under a press.
The adhesive label on the product is printed
in German, English and French as supplied.
If the product is used in a country where a
diff erent language is spoken, a label in the
corresponding language must be attached.
Missing or illegible adhesive labels on the
product must be attached or replaced (see
chapter 7.2 "Delivery and performance").
If the adhesive label is required in other, not
enclosed, languages, it must be produced
and attached by the customer on his own
responsibility.
3

Definition of terms

Working medium
The medium that flows through the valve.
Control medium
The medium with which increasing or
decreasing pressure causes the valve to be
actuated and operated.
Control function
The possible actuation functions of the
valve.
4

Intended area of use

The GEMÜ 620 diaphragm valve is

designed for installation in piping
systems. It controls a fl owing medium
by being closed or opened by a control
medium.
The valve may only be used providing

the product technical criteria are
complied with (see chapter 5
"Technical Data").
Do not paint the bolts and plastic parts of

the valve!
1
Use the valve only for the intended
purpose!
® Otherwise the manufacturer liability and
guarantee will be void.
Use the valve only in accordance with
G
the operating conditions specifi ed in
the contract documentation and in the
installation, operating and maintenance
instructions.
The valve may only be used in
G
potentially explosive zones confi rmed
in the declaration of conformity (ATEX).
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WARNING
620