
Instruction Manual
Page 11 of 40
Issue: 2.1
N:\Engineering\Manuals\Pump Unit E2-30 & 40 R2.1.doc
Installation – Section 3.1 - General
The E2-30 & E2-40 Pump Units are designed for location in Zone 1 Hazardous
areas, ATEX Category 2. Electrical connections must be in accordance with Local
regulations for installation in Hazardous areas.
It is recommended that a Local Control Box is positioned in close proximity to the
pump, as a convenient local Start / Stop facility and Junction box. The main Pump
Control Panel must be positioned within an Electrically Safe Area.
A Pressure switch (and/or Pressure relief valve) must be connected to the outlet
manifold port and set to stop the pump (or relieve the fluid pressure) in the event of
the system overpressure e.g. blocked paint filter. This is necessary to protect the
Pump mechanics from overload. An adapter to mount a pressure switch and
pressure sensor is available, see accessories.
It is recommended that the switch setting is set to 1 bar (14.5 psi) above the
maximum required pressure. The maximum Pressure setting the pressure switch
should be set to is 19 bar (275 psi) and 14 bar (203 psi) respectively.
The pressure switch must be fitted and functioning correctly before the pump is put
into use otherwise Pump warranty may be invalidated.
The Pressure Switch is classified as simple apparatus and as such should be
electrically connected as part of an intrinsically safe electrical circuit.
The pressure switch should be wired as a Normally Closed contact (fail safe) and be
hard wired to stop the motor on operation, to minimise response time.
Electric Motor
Motor must be wired to provide a clockwise direction of the cam.
Electric Motors for hazardous areas are specially designed to comply with official
regulations concerning the risk of explosion. If improperly used, badly connected, or
altered no matter how minor, their reliability could be in doubt.
Standards relating to the connection and use of electrical apparatus in hazardous
areas must be taken into consideration. Only trained personnel familiar with these
standards should handle this type of apparatus.
The Pump Frame must be
wired to a suitable earth
ground to ensure that there is
no possibility of static build up