Zenit APE 200/2/G50H A0CM(T)-E, Use And Maintenance Instructions

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6 . MINOR PROBLEMS: CAUSES AND SOLUTIONS
FAULTS POSSIBLE CAUSE SOLUTION
motor does not run
no voltage check the power supply line
automatic switch tripped reset the switch and establish the cause
rotor jammed identify the cause of the trouble and remove it
thermal protection triggered resets automatically (not on -EX versions)
motor functions normally but no
water is pumped
check valve jammed clean the valve and check its operation
blocked pipe identify the obstruction and remove it
pump has reduced flow rate
rotor, valve or pipes obstructed identify the obstruction and remove it
liquid level too low turn the pump off immediately
incorrect supply voltage
match the voltage to the values indicated on the
data plate
wrong rotation direction (three-phase motor) invert phases
thermal protector has been
triggered
rotor jammed identify the cause of the trouble and remove it
liquid temperature too high contact your nearest ZENIT dealer
7 . DISPOSING OF ELECTRIC PUMPS
In the event that is not considered economically viable to repair a worn or damaged electric pump, this must be disposed of in full
compliance with local regulations. To dispose of an electric pump, proceed as follows:
-
remove any oil in the chamber and dispose of at a specialised collection centre;
- separate the plastic and rubber parts and dispose of at a specialised collection centre;
- arrange for the metal parts to be scrapped.
Do not dispose of any motor pump component in the environment.
8 ELECTRICAL CONNECTIONS
The device must be wired up in compliance with the plant engineering regulations in force in the area in which the operation is
carried out.
In case of direct connection of the pump to the feeding line it is necessary to install upstream of this a magnetothermal – differential
switch. The functionality and the electric security of Zenit pumps are guaranteed for the configuration provided by the factory, so any
modification (i.e. addition of a piece of cable to that provided by Zenit) can cause the loss of the characteristics of the pump.
8.1 SINGLE-PHASE ELECTRICAL CONNECTION
Connect the yellow-green lead to earth and supply the leads on the electric pump as follows: BLACK lead to a line end; BLUE lead
to the other line end and to condenser\circuit breaker; BROWN lead to the other end of the condenser\circuit breaker. SINGLE-
PHASE electrical connection fig.3.
8.2 THREE-PHASE ELECTRICAL CONNECTION
Connect the yellow-green lead to earth and supply the electric pump output leads. If the electric pump has 3 leads, they must be
connected to a three-phase line with voltage and frequency equal to that indicated on the data plate, or to a control panel with
devices to reduce the initial current. If the electric pump has 6 leads, they must be connected to a control panel with a Y/delta
switching device. If the connection is made directly to the delta, the supply voltage is the lower of those indicated on the data plate;
if the connection is made to the Y, the voltage is the higher of those indicated on the data plate. The supply leads are marked as
follows:
-
3 leads U – V – W;
- 6 leads U1 – U2 – V1 – V2 – W1 – W2;
THREE-PHASE electrical connection fig. 3/a.
8.3 THERMAL PROBES
Thermal protection is incorporated in the motors and resets automatically in the single-phase and in the three-phase versions
equipped with thermistors or remote control switches. In the three-phase versions without remote control switches the thermal
protection, where present, is connected to the electric pump outlet leads labelled T. The thermal protection must be connected to
the corresponding terminal on the electric panel.
8.4 CONDUCTIVITY PROBES
Where present, the conductivity probe is inserted in the oil chamber and connected to the electric pump output lead labelled S. The
probe must be connected to the corresponding terminal on the electric panel.