13
10�1 Temperature monitoring
Thermal sensors in the stator windings protect the motor from overheating.
Piranha motors are fitted with bimetallic thermal sensors in the stator as standard in Piranha-PE and
Ex Piranha-S, and as an option in non-Ex Piranha-S.
ATTENTION:
Explosion-proof pumps may only be used in explosive zones with the thermal
sensors connected.
10�2 Seal monitoring
Piranha-PE and Piranha-S pumps are supplied with a moisture sensor (DI), to detect and alert to the ingress of
water into the motor and oil chambers.
DI is optional with Piranha-S, and in the Ex-version monitors only the motor chamber.
ATTENTION:
If the DI seal monitoring is activated the unit must be immediately taken out of
service. Please contact your Sulzer Service Centre.
NOTE!
Running the Piranha-PE pump with the thermal and/or moisture sensors
disconnected will invalidate related warranty claims.
10�3 Wiring diagrams
Single phase:
1
1
2 3
4 5
6
60 Hz:
PE
R S C
1 2
3
DI
F1 FO
R
50 Hz:
S C
PE
1
1
2 3
4 5
F1 FO
R
50 Hz:
S C
PE
R C S PE
1
blk gry br
50 Hz:
2.
3.
1.
NOTE:
R = Run
S = Start
C = Neutral (Common)
F1, F0 = Thermal sensor
DI = Seal monitor
PE = Earth
blk = Black
gry = Grey
br = Brown
1236-00
Three phase:
U1 V1 W1 V2 W2 U2 F1 FO
DI PE
1 2
3 4 5 6
7
8
9
U V W
F1 FO DI PE
1 2 3
4 5
6
60 Hz:
PE
T1 T2 T3 1 2
3
50 Hz:
U V W
F1 FO PE
1 2 3
4 5
50 Hz:
U V W
PE
50 Hz:
blk gry br
6.
5.
7.
4.
1237-00
