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Wiring diagrams three phase AC motor:
MAINS
3~ 3x230 V/60 Hz
L1
L2
L3
Fuse
Motor
protection
Motor
relay
U1
V1
W1
1
2
3
M
3~
3x230 V
60 Hz
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.
4.2 FITTING AND HYDRAULIC CONNECTION
NOTICE
Moving parts.
Risk of pinching, cutting or amputating fingers or other
body parts.
Ö The pump installation must not allow access to
moving parts.
Ö The protection against accidental contact of moving
parts (e.g. coupling) must not be removed during
operation of the machine.
Ö Keep away from moving parts.
NOTICE
Ö The waste water pump must be protected effectively
against the suction of air.
Ö Do not mount pumps in dry installation, since a
minimum water level up to the bottom edge of the motor
housing is prescribed by the guideline on protection
against explosion.
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.
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, adjust
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.
The pumps Sanipump ZPG 71 have to be controlled by means of a level
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.
The level control can be effected by means of a floating switch,
electropneumatically (press switch) or by means of other applicable
methods. The switching point of the pump should be set in such a way,
that the pump is entirely submersed under water.
Check all connections for correct assembly, set gate valve on passage
and check level control system for proper operation.
During the initial test run, check pipes for tightness and reseal them,
Thermal winding
if necessary.
protection
TB1
TB2
4
5
After an operation time of six to twelve months, the oil storage inside
the seal carrier always has to be controlled as follows:
- put the pump on its side on a clean surface and position it in such a
way that the oil filling screw faces upwards,
- take out the screw and check the oil level.
If only a small quantity of oil is lacking, the oil storage can be filled up
without any problems. If a considerable quantity of oil is lacking, or
if the oil is mingled with water, the customer department has to be
Green/Yellow
informed.
PE conductor
All other maintenance works on the pump and on the electrical
equipment should be carried out by the manufacturer or an authorised
qualified company in intervals of six to twelve months (or also in
shorter intervals, according to case of operation). Please immediately
inform the customer department in case of damage to the pump and/
or the electrical equipment.
15
4.3 LEVEL CONTROL SYSTEM
5. COMMISSIONING
6. MAINTENANCE AND REPAIR
DISCONNECT THE PUMP BEFORE ANY INTERVENTION!
7. MALFUNCTIONS, CAUSES AND
TROUBLESHOOTING
DISCONNECT THE PUMP BEFORE ANY INTERVENTION!
Malfunction Cause
Motor is not
Absence of line voltage
rotating
or improper line voltage
Incorrect connection
Defective power cable
Defective/wrong
capacitor
Impeller/cutting knife
blocked
Activated motor
protection
(overheating, blocking,
improper voltage or
other malfunction)
Control malfunction/
defective floating
switch
Motor defective
EN
Elimination
Check voltage supply
Correct the connection
Replacement (customer
service)
Replacement (customer
service)
Cleaning
Inspection, inform
customer service
Inspection, inform
customer service
Replacement (customer
service)
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