Dry Running - SPX Johnson Pump Manual Del Usuario

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Wiring table
Max 0.2
+
–
Black
Green/yellow
Other electrical devices, eg switch,
circuit breaker, must be installed between
the pump and the positive (+) lead on the
battery (on the red wire).
Wiring dimensions
(based on 3% voltage drop)
WD 3.4
Wire size
2.5 mm # 14 AWG
2
4 mm # 12 AWG
2
6 mm # 10 AWG
2
10 mm # 6 AWG
2
16 mm # 4 AWG
2
WD 5.0
Wire size
2.5 mm
2
4 mm
2
6 mm
2
10 mm
2
16 mm
2
* The wire length is the total distance from the
battery to the pump and back to the battery.
It is recommended to use a relay with a light
wire from main cable to switch to shorten the
main leaders.
10
m
Terminal
Switch
fuse
Pump
Max wirelenght* in m
12 V 24 V
5.4 20.6
8.6 32.9
12.9
21.4
34.3
Max wirelenght* in m
12 V 24 V
# 14 AWG 3.9 17.6
# 12 AWG 6.2 28.2
# 10 AWG 9.3 42.3
# 6 AWG 15.5
# 4 AWG 24.8
Start-up procedure
After pump installation, the system can
be started by using the following proce-
dure:
Red
• Make sure suction hose is connected
to the water supply.
• Open the spray nozzle and start
the pump.
• Close the spray nozzle when water
begins flowing and all air has been
purged from the system.
• If additional spray nozzles or taps are
in use after the pump, open each
additional nozzle/tap until all air has
been purged from the system.
• Pump will cut off after taps are
closed and pressure builds to the
setpoint of the pressure switch
Self-priming
Pump is self-priming up to 2.5 m/8.2 ft.
for WD 3.4 and 3 m/9.8 ft. for WD 5.0.
Intake lines must be air-tight to ensure
self-priming.

Dry running

Pump will not be damaged by shorter
period of dry running. It will, however, un-
necessary reduce your battery power.
Caution
Do not use pump for any other liquids
than fresh-water and sea-water.
Temperature
Max liquid temperature: +50°C/+120°F
Max ambient temperature: +60°C/+140°F
Winterizing
If water is not drained from the system
during freezing temperatures, damage
is likely to be sustained in the plumbing
and in the pump. To prevent damage
follow the instructions beneath:
1. Disconnect suction hose from water
supply (sea water supply) or if
water supply is taken from a tank,
drain water storage tank.
Original instructions