6.7 Electrical connection
Electrical connection must be carried out only
by a qualified electrician in accordance with
local regulations.
Follow all safety standards.
The unit must be always earthed, also with a non-
metallic delivery pipe.
Make sure the frequency and mains voltage correspond
with the name plate data.
For use in swimming pools (not when persons are in
the pool), garden ponds and similar places, a residual
current device with I∆N not exceeding 30 mA must be
installed in the supply circuit.
Install a device for disconnection from the mains
(switch) with a contact separation of at least 3 mm on
all poles.
When extension cables are used, make sure the cable
wires are of adequate size to avoid voltage drops and
that the connection stays dry.
6.7.1. Single-phase pumps GXRM, GXVM
Supplied with incorporated capacitor and thermal
protector, with power cable type H07 RN8-F, with
plug and float switch.
Connect the plug to a socket with an earth lead.
6.7.2. Three-phase pumps GXR, GXV
Cable without plug
.
Install in the control box an overload-protective device
with curve D in accordance with the name-plate current.
With three-phase pumps, when the water level is not
under direct visible control, install a float switch connec-
ted to the control box and to set the water levels to stop
and automatically start the pump.
7 STARTUP AND OPERATION
7.1 Preliminary checks before start-up of the
pump
Do not start-up the device in case of damaged parts.
7.2 First starting
With a three-phase power supply make sure the
direction of rotation is correct.
Before installation, momentarily start the motor to check
through the suction opening that the rotation of the impel-
ler is as shown by the arrow on the pump. Otherwise
disconnect electrical power and reverse the connections
of two phases in the control box.
Operation with wrong direction of rotation will cause
vibration and loss of delivery capacity.
Reverse rotation can also demage the mechanical seal.
When in doubt, take the pump out of the water and check
rotation of the impeller by sight.
Never introduce fingers in the suction
opening
unless it is absolutely certain the
electric power has been disconnected (that the
pump cannot be accidentally switched on) and
the impeller has stopped rotating completely.
The motors with supply current directly switched
by thermally sensitive switches can start automati-
cally.
Never take the pump out of the water while the pump is
still operating.
Avoid running dry.
Construction with float switch:
the float switch connec-
ted directly to the pump controls starting and stopping.
Check that the float switch is free from any obstacle.
Construction without float switch:
start the pump
only if immersed in the liquid to be raised (see h max
paragraph 12.1).
The Single-phase motor will stop if operation is prolon-
ged with water at a temperature above 50 °C.
When the windings cool down, the thermal protector
enables restarting.
7.3 Switch off of the pump
The appliance must be switch off every time
there are faults. (see troubleshooting).
The product is designed for a continuous duty, the
switch off is performed by disconnecting the power
supply by means the expected disconnecting devi-
ces. (see paragraph "6.8 Electrical connection").
8 MAINTENANCE
Before any operations it's necessary to disconnect
the power supply.
If required ask to an electrician or to an expert techni-
cian.
Every maintenance operations, cleaning or
reparation executed with the electrical system
under voltage, it could cause serious injuries
to people.
A possible replacement of the cable or the level
switch must be carried out by an authorised
Calpeda service workshop. .
In case of extraordinary maintenance, or maintenan-
ce operations that require part-removing, the opera-
tor must be a qualified technician able to read sche-
mes and drawings.
It is suggest to register all maintenance operation
executed.
OFF
M
1
marrone
brown
braun
marron
marrón
rödbrun
bruin
KáöÝ
êîðè÷
marrone
brown
braun
marron
marrón
rödbrun
bruin
KáöÝ
êîðè÷
verde/giallo
green/yellow
grün/gelb
vert/jaune
verde/gualdo
grön/gul
groen/geel
ÐñÜóéíï/êßôñéíï
æåë./æåëò
blu
blue
blau
bleu
azul
blå
blauw
μπλε
синий
blu
blue
blau
bleu
azul
blå
blauw
μπλε
синий
blu
blue
blau
bleu
azul
blå
blauw
μπλε
синий
4.67.380
nero
black
schwarz
noir
negro
svart
zwart
μαύρο
черный
rosso
red
rot
rouge
rojo
röd
rood
κόκκινο
красный
bianco
white
weiss
blanc
blanco
vit
wit
λευκό
белый
verde/giallo
green/yellow
grün/gelb
vert/jaune
verde/gualdo
grön/gul
groen/geel
ÐñÜóéíï/êßôñéíï
æåë./æåëò
ON
OFF
GB
GXR, GXV Rev. 8 - Operating Instructions
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