Homa CTP 50 M, Оригинальное руководство пользователя

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3.4. Explosive enviroments
For operation of the pumps in explosive enviroments
only models with explosion-proof motors (Ex model) must
be used.
It is important to take notice of „Installation and Op-
eration Instruction Manual of the explosion classification
(Ex-class) of the submersible pump.
For each individual installation the explosion classifi-
cation (Ex-class) of the pump must be approved by the
local authorities.
4. Warranty
Our warranty only covers pumps which are installed and
operated in accordance with these installation and opera-
tion instructions and accepted codes of good practice and
being used for the applications mentoined in these instruc-
tions.
5. Transport and Storage
Never use the cable or the discharge hose/pipe to lift,
lower, transport or attach the pump. Always use the han-
dle or a rope or a chain attached to the handle.
The pump may be transported and stored in vertical
or horizontal position. Make sure that it cannot roll or fall
over. For longer periods of storage, the pump should be
protected against moisture, frost or heat.
6. Electrical Connection
Before operation, an expert check must secure that
the required electrical protection measures exist. The
connection to ground, earthing, isolating transformer, fault
current breaker or fault voltags circuit must correspond to
the guidelines set forth by the responsible power plant.
The voltage required in the technical data sheet
must correspond to the existing line voltage.
Submersible pumps used outside of buildings must
have a cable with a minimum length of 10m.
Make sure that the electrical pin-and-socket connec-
tions are installed flood- and moisture-safe. Before start-
ing operation check the cable and the plug against dam-
ages.
The end of the pump power supply cable must not be
submerged in order to prevent water from penetrating
through the cable into the motor.
The normal separate motor starter/control box of
standard as well as of explosion proof pumps must
not be installed in explosive enviroments.
6.1. Connection of 1 Ph-Motors
TP 50, TP 53 and TP 70 pumps with 1Ph-motors are sup-
plied with or must be connected to a seperate control box
with motor starter and operating capacitor. If any other
then an original HOMA control unit is used, make sure
that the thermal relay in the motor starter is set according
to the nominal current consumption of the pump motor
(see data on pump label). For capacitor sizes, see table
below:
Pump type
Operating capacitor
μ
F
V
AC
TP 50, TP 53
2pole up to 0,8 kW (P
2
)
25 450
TP 50, TP 53
2pole above 1,0 kW (P
2
)
30 450
TP 50, TP 53
4pole up to 0,9 kW (P
2
)
40 450
TP 70, up 1,1 kW (P
2
) 40 450
6.2. Connection of 3 Ph-Motors
TP 50, TP 53 and TP 70 pumps with 3Ph-motors are sup-
plied with or must be connected to a separate control box
with motor starter and operating capacitor, available from
the HOMA accessory program. If any other than an origi-
nal control unit is used, make sure that the thermal relay
in the motor starter is set according to the nominal current
consumption of the pump motor (see data on pump
la-
bel).
Motor-Start
The pump motors are designed either for DOL- or Star-
delta-start (check the designation on the pump label).
Standard motors < 4 kW are designed for direct-on-line
(DOL) start. All motors with 400 V voltage indication on
the pump label have their motor windings internally star-
connected for operation at 400 V / 3 Ph power supply.
The motor cable wires indicated U, V, W must be con-
nected to the power supply wires indicated L1, L2, L3
through the motor starter.
Standard motors from 4 kW are prepared for star-delta
start. This means that each end of each of the stator wind-
ings is connected to one pump cable wire. The wires are
marked U1/U2, V1/V2 and W1/W2. For star-delta start,
the pump must be connected to an appropriate starter.
If a motor, wich is prepared for star-delta start as de-
scribed above, is supposed to operate with direct-on-line
(DOL) start at 400V/3Ph power supply, the pump cable
wires must be delta-connected in the starter box.
Not the types TP50 M50/…V50 and TP70 V50.
6.3. Temperature Sensors
The explosion proof models have a set of temperature
sensore built in the stator windings. The contact of these
sensors opens in case of overtemperature and switches
off the motor power supply. Standard models of TP pumps
with temperature sensors are available upon request.
Standard models of 1Ph-motors have the sensors (built in
upon request) internally connected, so that no external
connection to the control box is necessary. When the mo-
tor cools, it is switched on again automatically.
Standard models of all 3Ph-motors have the sensors (built
in upon request) connected to the motor power supply ca-
ble, the wire ends marked T
1
and T
3
. They must be con-
nected to the safety circuit of the control box in order to
provide an automatic re-start of the motor, when the mo-
tors cools.