VACUUBRAND MZ 2C EX +IK+EK - Manual (Page 24)

page 24 of 75
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999128 / 29/04/2014
• The gas outlet must not be blocked. The exhaust pipeline has always to be free
and pressureless to enable an unhindered discharge of gases.
• If necessary connect the exhaust to a suitable treatment plant to prevent the dis-
charge of dangerous gases and vapours to the surrounding atmosphere.
• Attention: Install hoses of the cooling system in a way to avoid flow / dropping of
condensed water onto the pumping unit (especially cables and electronic parts).
• Ensure that the coolant outlet pipeline is always free and that it cannot get
blocked.
• Install an optional coolant valve always in the supply line of the vapour condenser
only.
Connection of the mains cable
☞
Electrical connection of the pump must be performed only by a suitable trained
and supervised personnel.
☞ The motor cable for pumps in 230V version contains wires colour coded as fol-
lows: green or green and yellow: earth; blue or white: neutral (N); brown or black:
live (L).
☞ Provide a fuse for the mains cable (L and N) according to the current draw of the
motor, see ”Technical data”.
☞ The earth connection of the device (potential equalization) has to be performed
only using the green or green/yellow earth connection wire. Connect the earth
connection wire of the device to the earth connection of the power supply line and
the potential equalization point of the environment of the device.
Attention: Never use the antistatic connection at the housing of the device to
connect the device to ground, use only the green or green and yellow connection
wire of the motor. Use the antistatic connection at the housing only to perform an
antistatic connection of other non-electronic devices and components, e. g. inlet
and outlet vacuum hoses or something similar. Never lead away short-circuit cur-
rents using this connection. External electric devices have to be connected at the
potential equalization point of the environment separately and independent of this
device.
☞ In case of power failure unintentional venting of the system is possible. Adopt
suitable measures if this might lead to a dangerous situation.
Inlet
☞
Connection lines at the pump inlet have to be performed conductive grounded
and gas tight (designation of the pump connections see figures).
☞ Particles and dust must not be aspirated, the user has to provide appropriate
filters if necessary. The user must ensure the suitability concerning gas flow,
chemical resistance and safeness against clogging prior to use.
☞ If there is a danger of deposits in the pump chamber (check inlet and outlet of the
pump) control the pump chamber regularly and clean if necessary.
☞ If there is a risk of ignition of gases or gas mixtures before or behind the pump the
user has to provide suitable safety devices against incoming of flames according
to EN 12874. The user must ensure the suitability concerning gas flow, chemical
resistance and safeness against clogging prior to use.
Connection of the inert gas purge
☞
Connect the inert gas connections at the gas ballast and the crankcase not serial
but parallel.
☞ Inert gas connection lines (inlet and outlet) have to be performed conductive
grounded and gas tight (designation of the pump connections see figures).
☞ We recommend an inert gas purge of ≥ 1 l per minute.