Electrical System; Rotation Control; Level Control; Operation In Potentially Explosive Areas - Wilo EMU FA+T Einbau- Und Betriebsanleitung

COMMISSIONING

• Electrical engineering and mechanical adjust-
ments must be made by qualified personnel.
• The pump is suitable for use under the specified
operating conditions.
• The work area of the pump is not a recreational
area and is to be kept free of people! No persons
are allowed in the work area during start-up or
operation.
• When working in pump chambers, a second per-
son must be present for safety reasons. Adequate
ventilation must be ensured if there is danger of
poisonous gases forming.

6.1. Electrical system

Connect the pump and install the power supply
cables as described in the 'Installation' section
and in accordance with the VDE guidelines and
applicable national regulations.
The pump must be properly protected and
earthed.
Observe the direction of rotation. If the direction
of rotation is incorrect, the pump will not perform
as specified and may be damaged.
Make sure all monitoring devices are connected
and have been tested.
ELECTRICAL hazard!
Electrical current can cause fatal injuries if not
handled correctly! All pumps with free cable
ends (i.e. without plugs) must be connected
by a qualified electrician.

6.2. Rotation control

The pump is checked and adjusted in the factory
to ensure that the direction of rotation is correct.
The connection must be made according to the
wiring labels.
A test run must be performed under general op-
erating conditions!
6.2.1. Checking the direction of rotation
The direction of rotation must be checked with a
rotating field tester by a local electrician. For the
correct direction of rotation, a clockwise rotating
field must be available.
The pump is not approved for operation with a
counter-clockwise rotating field!
6.2.2. If the direction of rotation is incorrect
If the direction of rotation is incorrect for direct
start motors, 2 phases must be swapped. In the
case of star-delta motors, the connections of two
windings must be swapped, e.g. U1 with V1 and
U2 with V2.

6.3. Level control

The level control device is to be checked to en-
sure it is installed properly and the settings of the
switching points are to be inspected. For the re-
quired information please refer to the installation
and operating instructions for the level control
device, as well as the consulting documentation.
Installation and operating instructions Wilo-EMU FA + T-Motor

6.4. Operation in potentially explosive areas

If the pump is labelled accordingly, it can be used
inside potentially explosive areas.
RISK of fatal injury due to explosive atmos-
phere!
Pumps without Ex labelling may not be used
in potentially explosive areas! There is a risk
of fatal injury due to explosion! Check your
pump before use to verify that it has corre-
sponding approval:
• Ex symbol
• Ex classification, e.g. II 2G EEx d IIB T4
• Also note the additional information in the
appendix!
6.5. Commissioning
Minor oil leakage in the mechanical shaft seal on
delivery is no cause for concern. However, it must
be removed prior to submersion in the fluid.
Keep out of the pump's work area. No persons
are allowed in the work area during start-up or
operation.
WARNING: Danger of crushing!
In portable installations, the pump can fall
over when it is switched on or during opera-
tion. Make sure that the pump is positioned
on a firm bearing surface and that the pump
support foot is mounted correctly.
If the pump falls over, it must be switched off
before setting it up again.
In the version with a plug, note the plug's IP pro-
tection class.
6.5.1. Before switching on
DANGER of fatal injuries from explosions
If the slide valves on the suction and pres-
sure sides are closed during operation, the
fluid in the hydraulics housing is heated up by
the pumping movement. This heating creates
strong pressure in the hydraulics housing. The
pressure can result in the pump exploding.
Before switching on the unit, ensure that all
the slide valves are open and open any closed
slide valves.
Check the following:
• Cable guidance – no loops, slightly taut
• Check the temperature of the fluid and the im-
mersion depth – see technical data
• The pump sump is to be cleaned of any coarse
contaminants, especially of solids such as sand/
grit, metal and stone
• Clean the pipe system on the pressure side
• Open all slide valves on the pressure side
• The fluid must be present at least up to the suc-
tion opening of the hydraulics housing.
• The pipe system must be vented by suitable
venting devices in the system.
• Check to ensure all accessories are properly fitted
English
61