SFA Sanipump ZFS 71 Manual De Instalación E Usuario página 18

EN
MAINS
1~ 230 V/50 Hz
L1 N
Fuse
Motor
protection
Motor
relay
Motor capacitor
U1 U2
1 2
Z1
3
M
1~
230 V
50 Hz
Three-phase model:
The wires of the seven-wire connection cable of the pumps (three-
phase model) are marked as follows:
Green/Yellow PE
1 U1
2 V1
3 W1
4 TB1
5 TB2
6 TB3
Wiring diagrams three phase AC motor:
MAINS
3~ 400 V/50 Hz
L1 L2 L3
Fuse
Motor
protection
Motor
relay
U1 V1 W1
1 2 3
M
3~
400 V
50 Hz
Thermal winding protection
Clipping
Control loop
circuit
TB1 TB2 TB3
4 5 6
Green/Yellow
PE conductor
Ground wire (earthing)
Three windings, star connection
Second contact control loop
Shared contact control loop and clip-
ping circuit
Second contact clipping circuit
Thermal winding protection
Control circuit Clipping circuit
TB1 TB2 TB3
4 5 6
Green/Yellow
PE conductor
Connection of the thermal winding cover
- Control loop : T1 and T2 must be connected in a switching device
in such a way, that the following function is guaranteed: When the
temperature sensors respond, the pump is switched off until the
temperature has dropped again. Now the pump is switched on again.
- Clipping circuit : T2 and T3 must be connected in a switching de-
vice in such a way, that the following function is guaranteed: When
the temperature sensors respond, (failure of the control loop), the
pump is switched off and can be restarted by hand solely. The pump
may only be restarted after an error analysis has been conducted
and the cause of malfunction has been eliminated.
4.2 FITTING AND HYDRAULIC CONNECTION
NOTICE
Moving parts.
Risk of pinching, cutting or amputating fingers or other
body parts.
 The pump installation must not allow access to mo-
ving parts.
 The protection against accidental contact of moving
parts (e.g. coupling) must not be removed during ope-
ration of the machine.
 Keep away from moving parts.
NOTICE
 The waste water pump must be protected effectively
against the suction of air.
 Do not mount pumps in dry installation, since a mi-
nimum water level up to the bottom edge of the motor
housing is prescribed by the guideline on protection
against explosion.
Example of installation in annex.
4.2.1 Installation with supporting ring:
- Mount supporting ring to intake flange of the pump and install
pump. Ensure stability of the pump.
- Connect pressure side by means of flange DN 50.
- If a hose is to be laid on the pressure side, kinks are to be avoided.
- Avoid kinks during the laying of the supply cable. Lay supply cable
without tensile loading and without causing chafe marks.
4.2.2 Installation for shaft fitting:
- Position pipe clamp on inner rim of the shaft and loosely fix it with
two screws.
- Sound out position of guide pipe frame for coupling pedestal, ad-
just coupling pedestal on shaft bottom and mount it with the heavy-
duty dowels which are included in the delivery.
- Install pressure pipe and valves in a tension-free manner.
- Slip the guide pipe on the coupling pedestal, shorten it to correct
length, slip on pipe clamp and tighten it for good.
- Mount coupling element and lowering chain to the pump, lower
pump with the chain (insert guide pipe into coupling element) and
couple it, hang the chain up on the pipe clamp so that it is ready to
hand.
- Lay supply cable. Avoid kinks and lay supply cable without tensile
loading and without causing chafe marks.
4.3 LEVEL CONTROL SYSTEM
The pumps Sanipump ZFS 71 have to be controlled by means of a le-
vel control in such a way, that a decline of the water level beneath the
minimum allowable level (bottom line of motor housing) is avoided
at all costs.
Avoid dry running without pumped fluid.
The level control can be effected by means of a floating switch, elec-
tropneumatically (press switch) or by means of other applicable me-
thods. The switching point of the pump should be set in such a way,
that the pump is entirely submersed under water.
If the level control is effected via a floating switch, the signal of the
floaters has to be transmitted via intrinsically safe Ex i –relays.
5. COMMISSIONING
Check all connections for correct assembly, set gate valve on pas-
sage and check level control system for proper operation.
During the initial test run, check pipes for tightness and reseal them,
if necessary.
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