~ 5 ~
8. Sound pressure level
Motor
dB(A)
TPAK 2
<70
TPAK 4
<70
TPAK 8
<70
TPAK 15
<70
9. Wiring diagram
CONNECTING
3Ø
L1
LOW VOLTAGE
U1
W2
L2
V1
U2
L3
W1
V2
HIGH VOLTAGE
L2
L3
L1
W2 U2
V2
U1
V1
W1
10. Fault finding
(Make sure electricity supply has been switched off before attempting to diagnose any fault)
Fault
Cause
10.1 Motor does not start
a. No electricity supply
b. Fuses are blown.
c. Motor overheating relay tripped.
d. Defective magnetic contactors.
e. Control circuit malfunction.
10.2. Motor cut out during operation.
a. Fuses blown or breakers tripped.
b. Overheating relay tripped.
c. Control circuit malfunction.
d. Pump locked up by foreign objects.
10.3. Pumped capacity is not constant.
a. Pump impeller blocked by impurities.
b. Insufficient liquid level in the tank.
(See Sec. 4.2)
10.4. Pump runs but gives no liquid.
a. Impellers damage.
b. Liquid level is too low (See Sec. 4.2)
c. Incorrect rotating direction.
