Installation Site Requirements - Bühler technologies GL 1 Guía Rápida

GL 1-3
3 Use in explosive atmosphere areas
Intended Use
The receptacles may be used in explosive atmosphere areas
zone 1 and 2. Explosion groups IIA and IIB are approved. The
receptacles have no innate ignition source and do not fall un-
der Directive 2014/34/EU and therefore do not bear the CE
mark.
The ambient temperatures must not be below > 0 °C or above
60 °C.
The maximum surface temperature is directly affected by the
temperature of the medium introduced. The medium intro-
duced must not exceed the maximum temperature of 80 °C.
Continuous temperature monitoring must be used if there is
a risk of exceeding the max. temperature limit.
When operating the GL 3 with level switch, these must be in-
herently safe according to EN 60079-11. Please observe EN
60079-14 during assembly and installation!
Depending on the process conditions, pressure or flow sensors
may be required for continuous monitoring.
Safety instructions
The following safety notices must absolutely be followed
when operating the receptacles in an area with explosive at-
mosphere. Failure to do so can result in an explosion hazard.
• Only perform installation-, removal- and maintenance
work in non-explosive atmosphere.
• Protect the receptacles from mechanical impact. If neces-
sary, install a cover which can withstand at least 4 joule.
• Protect the receptacle from vibration, or avoid vibration. If
necessary, mechanically brace supply and discharge lines.
• Observe all limits, operating parameters, etc. specified in
these operating instructions and the data sheet.
• Maintenance and cleaning instructions must be followed.
• If necessary, install a pre-filtration to prevent adverse ef-
fects of larger solid particles on the receptacle capacity.
• Only use media compatible with the receptacle materials.
• Damaged receptacle components must be replaced.
Operation and Control
DANGER
Risk of explosive gasses leaking and crossing zones
Check the receptacle is tight prior to operation.
Inadequately sealed receptacles can leak. Gas may leak or the
ambient atmosphere be drawn in. Use a suitable method for
the leakage test, appropriate for the application.
DANGER
Explosion hazard
To use the GL 3 in an explosive atmosphere with level switch,
the level switch and controller must be ignition protection
class intrinsically safe "i". The use of non-intrinsically safe
components may result in ignition in explosive atmospheres.
Also note the specifications under EN 60079-14 in this respect.
BX440020 ◦ 11/2016
Maintenance
Please note the following instructions. Failure to do so may
result in explosive gasses escaping and crossing zones.
• Check the receptacle for leaks following any maintenance
and at the intervals specified in the maintenance sched-
ule. Inadequately sealed receptacles can leak. Gas may
leak or the ambient atmosphere be drawn in. Use a suit-
able method for the leakage test, appropriate for the ap-
plication.
• There must be no internal or external Ex atmosphere
when performing maintenance. If necessary, flush the re-
ceptacle with inert gas. Switch off pumps on the gas cir-
cuit and close supply and discharge lines.
Cleaning
Regularly remove any dust deposits on the receptacle.
Clean the outside of the receptacle using only a clean, damp
cloth (do not use cleaners containing solvents).
DANGER
Spark formation due to electrostatic discharge (explo-
sion hazard)
Only clean the receptacle with a clean, damp cloth.
Connecting a level switch (GL 3)
The level switch for the GL 3 must be operated inherently safe
with a controller type-examination tested for Zone 1 or 2. The
inherently safe circuit must comply with Ex ib or Ex ic depend-
ing on the zone.
The circuit values for the level switch are:
U = 30 V
i
I = 50 mA
i
The electric circuit must not exceed these limits!
4 Transport and storage
Only transport the product inside the original packaging or a
suitable alternative.
The equipment must be protected from moisture and heat
when not in use. It must be stored in a covered, dry, dust-free
room at room temperature.
5 Installation and connection

5.1 Installation site requirements

The front panel must be prepared according to the drawings
in the data sheets.
The receptacle should be installed in a way so it can be emp-
tied or removed. If the receptacle protrudes from a contour,
please note this poses a risk of damage.
The maximum permissible pressure is 2 bar (29 PSI).
5.2 Connecting the condensate line
Please note the correct position of the seal when connecting
the line (see image). The seal consists of a silicone ring with a
PTFE sleeve. The PTFE side must face the glass thread. Pay at-
tention to leaks!
Bühler Technologies GmbH 7