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4 Installation
WARNING: Electrical Hazard
There is a risk of electrical shock or explosion if the electrical
connections are not correctly carried out, or if there is fault or
damage on the product. Visually inspect equipment for dam-
aged cables, cracked casings or other signs of damage.
Make sure that electrical connections have been correctly
made.
WARNING: Crush Hazard
Risk of automatic restart.
CAUTION: Electrical Hazard
Prevent cables from becoming sharply bent or damaged.
NOTICE:
Leakage into the electrical parts can cause damaged equipment or a
blown fuse. Keep the cable ends dry at all times.
Requirements
These general requirements apply for electrical installation:
• The supply authority must be notified before installing the pump if it
will be connected to the public mains. When the pump is connect-
ed to the public power supply, it may cause flickering of incandes-
cent lamps when started.
• The mains voltage and frequency must agree with the specifications
on the data plate. If the pump can be connected to different voltag-
es, then the connected voltage is specified by a yellow sticker close
to the cable entry.
• The fuses and circuit breakers must have the proper rating, and the
pump overload protection (motor protection breaker) must be con-
nected and set to the rated current according to the data plate and
if applicable the cable chart. The starting current in direct-on-line
start can be up to six times higher than the rated current.
• The fuse rating and the cables must be in accordance with the local
rules and regulations.
• If intermittent operation is prescribed, then the pump must be pro-
vided with monitoring equipment supporting such operation.
• If stated on the data plate, then the motor is convertible between
different voltages.
• The thermal contacts/thermistors must be in use.
Cables
These are the requirements to follow when you install cables:
• The cables must be in good condition, not have any sharp bends,
and not be pinched.
• The cables must not be damaged and must not have indentations
or be embossed (with markings, etc.) at the cable entry.
• The cable entry seal sleeve and washers must conform to the out-
side diameter of the cable.
• The minimum bending radius must not be below the accepted val-
ue.
• If using a cable which has been used before, a short piece must be
peeled off when refitting it so that the cable entry seal sleeve does
not close around the cable at the same point again. If the outer
sheath of the cable is damaged, then replace the cable.
Contact a sales or authorized service representative.
• The voltage drop in long cables must be taken into account. The
drive unit's rated voltage is the voltage measured at the cable con-
nection point in the pump.
®
• For SUBCAB
cables, the twisted pair copper foil must be trimmed.
• All unused conductors must be insulated.
Grounding (earthing)
Grounding (earthing) must be done in compliance with all local codes
and regulations.
DANGER: Electrical Hazard
All electrical equipment must be grounded (earthed). Test
the ground (earth) lead to verify that it is connected correctly
and that the path to ground is continuous.
8
WARNING: Electrical Hazard
If the power cable is jerked loose, then the ground (earth)
conductor must be the last conductor to come loose from its
terminal. Make sure that the ground (earth) conductor is lon-
ger than the phase conductors at both ends of the cable.
WARNING: Electrical Hazard
Risk of electrical shock or burn. You must connect an addi-
tional ground- (earth-) fault protection device to the ground-
ed (earthed) connectors if persons are likely to come into
contact with liquids that are also in contact with the pump or
pumped liquid.
4.2.1 Connect the motor cable to the pump
NOTICE:
Leakage into the electrical parts can cause damaged equipment or a
blown fuse. Keep the end of the motor cable dry at all times.
1. Remove the entry gland screw from the stator housing.
2. Remove the stator housing.
This provides access to the terminal block/closed end splices.
3. Check the data plate to see which connections are required for the
power supply.
4. Arrange the connections on the terminal block/closed end splices
in accordance with the required power supply.
5. Connect the mains leads (L1, L2, L3, and ground (earth) ) according
to applicable cable chart.
The ground (earth) lead must be 50 mm (2.0 in.) longer than the
phase conductors in the junction box of the unit.
6. Make sure that the pump is correctly connected to ground (earth).
7. Make sure that any thermal contacts incorporated in the pump are
properly connected to the terminal block/closed end splices.
8. Install the entry gland screw on the stator housing.
4.2.2 Connect the motor cable to the starter and
monitoring equipment
DANGER: Explosion/Fire Hazard
Special rules apply to installations in explosive or flammable
atmospheres. Do not install the product or any auxiliary
equipment in an explosive zone unless it is rated explosion-
proof or intrinsically-safe. If the product is EN/ATEX-, MSHA-
or FM-approved, then see the specific EX information in the
Safety chapter before taking any further actions.
NOTICE:
Thermal contacts are incorporated in the pump.
NOTICE:
Thermal contacts must never be exposed to voltages higher than
250 V, breaking current maximum 5 A. It is recommended that they are
connected to 24 V over separate fuses to protect other automatic
equipment.
1. If thermal contacts are included in the pump installation, then con-
nect the T1 and T2 control conductors to the monitoring equip-
ment.
2. Connect the mains leads (L1, L2, L3, and ground (earth)) to the start-
er equipment.
For information about the phase sequence and the color codes of
the leads, see Cable charts.
3. Check the functionality of the monitoring equipment:
a) Check that the signals and the tripping function work properly.
b) Check that the relays, lamps, fuses, and connections are intact.
Replace any defective equipment.
GFK-GFV Series Installation, Operation, and Maintenance Manual
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