
3
set at turn-on for one pump, and
one set for turn-on for two pumps.
Pumps alternate operation on each
successive cycle.
Two pumps operate together only
if sump level rises to the third
or override control. The override
control also brings on the second
pump in case of failure of
the first pump. Extra floats with
appropriate controls can be
supplied for alarm functions.
Triplex systems use four controls:
one set at turn-off, one set at
turn-on for one pump, one set
at turn-on for two pumps, and
one set at turn-on for three
pumps. Pumps alternate each
successive cycle.
Three pumps operate together
only if sump level rises to the
fourth control (second override).
This control also brings on the
third pump in case of failure of
either or both of the first two
pumps.
Alarm Control:
The alarm level is usually set
above the override level so
the alarm will signal only if
the override level is exceeded.
However, some engineers prefer
to have the alarm level set below
the override level as it is possible
for one pump to fail and the other
pump to operate on the override
level with the sump level never
reaching the alarm level. This is
particularly true in cases of low
inflow capacity.
Electrical Control Panel:
It is recommended that the
Hydromatic control panel be used
with all pumps as proper starter
heaters and connections for heat
sensor wires are furnished.
IMPORTANT: If Hydromatic
electrical controls are not used
and the motor fails because of
improper components or if the
heat sensors are not properly
connected, the motor guarantee
is void.
Hydromatic electrical equipment
is installed in a weatherproof
NEMA 3R enclosure.
WARNING: Do not open swing
cover until you have first
disconnected the power.
HEAT SENSOR & SEAL FAILURE
NUMBER OF CONDUCTORS REQUIRED BETWEEN CONTROL PANEL AND NEMA 4 JUNCTION BOX
Power lines and control wires can be carried in conduit or can be underground buried cable.
System
Number of
Number of
Number of
Type
Control Wires
Power Lines
Ground Wires #8
Number of
Number of
Sensor Wires
Ground Wires
Simplex
3
3
1
3
1
Simplex with Alarm
5
3
1
3
1
Duplex
5
6
1
6
2
Duplex with Alarm
7
6
1
6
2
WIRE SIZE AND MAXIMUM LENGTH (FEET) FOR REMOTE LOCATION OF CONTROL PANEL
BASED ON A 2% VOLTAGE DROP (460 VOLTS 3 PHASE)
Copper Wire
Amperes @ 460 Volts*
No. D.C. Res.
AWG
/M Ft.
5
10
15
20
25
30
40
50
60
70
80
90
100
120
140
160
180
200
12
1.620
650
330
220
160
130
110
10
1.018
1040
520
350
260
210
170
130
8
0.6404
1660
830
550
410
330
280
210
160
6
0.410
2590
1290
860
640
520
430
320
260
210
180
160
4
0.259
2050
1360
1020
820
680
510
410
340
290
260
230
200
170
3
0.205
2590
1730
1300
1040
860
650
520
430
370
320
290
260
220
180
2
0.162
2180
1640
1310
1090
820
680
590
510
460
410
360
320
270
220
200
1
0.129
2060
1650
1370
1030
820
680
590
510
460
210
340
290
260
230
0
0.102
2080
1730
1300
1040
870
740
650
580
520
430
370
320
290
260
00
0.0811
2180
1640
1310
1090
940
820
730
650
540
470
410
360
330
000
0.0642
2070
1650
1380
1180
1030
920
830
690
590
520
460
410
NOTE: For 575 volts obtain distance by multiplying by 1.25
‡60°C
‡ Based on
3 power conductors
in cable or conduit, for 4 to 6 reduce amp capacity to 89% & for 7 to 24 reduce to 70%.
‡Rating 90°C
Special junction box required for wire sizes larger than #4.
Insulation @ 30°C Amb.
Содержание Hydromatic S4LRC-3450 RPM
Страница 11: ...11 Wiring Diagrams...