www.schischek.com
Schischek GmbH Germany, Mühlsteig 45, Gewerbegebiet Süd 5, 90579 Langenzenn, Tel. +49 (0)9101 9081-0, Fax +49 (0)9101 9081-77, E-Mail [email protected]
E X P L O S I O N P R O O F
A. Installation, commissioning, maintenance
The cable of the actuator must be installed in a fixed position and protected against
mechanical and thermical damage. In acc. with operation ExMax actuators are
maintenance free. Nevertheless maintenace must comply with regional standards, rules
and regulations. The flameproof enclosure is protected against mechanical shock in acc.
with EN 60079 by the housing of the actuator
The actuators must not be opened by the customer. For outdoor installation a protective
housing against rain, snow and sun should be applied to the actuator, as well as a
constant supply at terminal 1 and 2 for the integral heater. For electrical connection
inside hazardous areas an Ex-e terminal box is requested (e.g. type ExBox).
Attention: If the actuator is put out of operation all Ex-rules and regulation must be
applied.
Example: you have to cut the supply voltage before opening an Ex-e terminal box
B. Shaft connection, selection of running time, heater
ExMax actuators are equipped with a direct coupling double squared shaft connection
of 16 × 16 mm. The housing of the actuator is axially symmetrically built to select
open/close direction of the spring return function by left/right mounting.
In acc. to the actuator type 5 different motor running times can be selected on site. The
integral heater is for ambient temperatures down to -40°C.
C. 3-pos control mode
See extra information „EL-M“.
D. Spring return
Spring return function works if the supply voltage (terminal 1 or 2) is cut. In the event of
an electrical interruption, the spring returns to its end position.
E. Operation at an ambient temperature below -20°C
See extra information „EL-M“.
F. Excess temperature
In acc. to the ATEX rules and regulations Ex actuators must be protected against excess
temperature. An internal thermostat guarantees the temperature class in the event of
failure. If this thermostat is working the actuator must be sent to the factory.
ExMax actuators are equipped with an additional temperature sensor to stop the actuator
before reaching this max. temperature. In this case the failure must be eliminated immedia-
tely on site.
G. Loss of voltage
In switch position 0, 1 and 5, 6 (motor running time 40, 60 sec.) and after voltage interrupts
moves the actuator (type 50.75 and -100, -150 /-S) in OFF position then the actuators
works regarding control signal.
H. Synchronous mode
To link two or more actuators together is not permitted.
Details see extra information „ME-M“.
Details see extra information „ME-M“.
ExSwitch is an accessory to ExMax actuators, fixing
directly onto the actuator. ExSwitch are aux. switches
with with 2 potential free contacts, adustable on site. The
electrical wiring needs an Ex-e terminal box.
For electrical connection of an ExMax-.. inside the
hazardous area an Ex-e terminal box is required.
ExBox-3P for ExMax-.. actuators.
ExBox-Y/S for ExMax-… integral aux. switches.
To adapt the ExBox direct to the actuator housing an
additional accessory type MKK-M is required.
Important information for installation and operation
Mounting of quarter turn valves
Mounting on air dampers with double squared shaft connection
ExSwitch – adaptable external Ex-d aux. switches
ExBox – adaptable Ex-e terminal box
Extra information „EL-M“ (see additional data sheet)
extra technical information, versions of circuit diagrams and failure indication
Extra information „ME-M“ (see additional data sheet)
extra technical information, dimensions, installation instruction and illustration
Mounting instructions and important information for operation and installation
D.EM-01.03-M-en-3P
24-may-2011
ExMax-50…150 ExMax-30…60-F
Special makes
ExMax-…-S/SF
ExMax-…-CTM
