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A strainer must be installed in line before the
pump intake to prevent debris from entering
pump and interfering with proper functioning
of valves.
Electrical installation
The pump must be installed according to
ISO 10133 (Small craft – Electrical system
– Extra low voltage DC installation for con-
tinuous current). Note: The fuse must be ig-
nition protected.
The motor is equipped with built in thermal
protection to prevent the motor from over-
heating. The protection is automatically re-
stored when the motor is cooled.
If the pump is connected with separate earth
lead, this should be yellow/green and con-
nected to the motor base. See the wiring
table for correct installation. Negative wire
must be black. Choose wire size in accor-
dance with total wire length.
The wire connections must be sealed with a
marine sealant.
Note: Before installation with electrical con-
trol systems, check that equipment to be
used is of sufficient rated capacity to accept
amperage draw of motor. Low voltage will
cause motor to overheat.
Maintenance
The system shall be periodically sanitized
using the following procedure:
1. Fill the tank with a solution of house-hold
bleach and potable water – 1 ml (.03 oz.)
bleach/1 Liter (32 oz.) water).
2. Open all faucets and run until water flow-
ing smells of bleach.
3. Close all faucets
4. Drain solution from tank
Start-up procedure
After pump installation, the system can be
started by using the following procedure:
• Fill water tank
• Open one tap
• Turn on pump
• Close tap once water begins flowing
• Open each additional tap until all air has
been purged from the system
• Pump will shut off after taps are closed
and pressure builds to the set point of
the pressure switch
Original instructions
Self-priming
Pump is self-priming up to 2.5 m/8.2 ft. for
Flow Master 5.0. Intake lines must be air
tight to ensure self priming.
Dry running
Pump will not be damaged by short periods
of dry running.
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 dur-
ing freezing temperatures, damage is likely
to be sustained in the plumbing and in the
pump. To prevent damage follow the instruc-
tions beneath:
1. Drain water storage tank.
2. Open all taps.
3. Run pump until remaining water is ex-
pelled.
4. Disconnect inlet and outlet tubes.
5. Run pump briefly to confirm that water has
been expelled.
6. Taps shall remain open and pump fittings
shall remain disconnected until tempera-
tures are above freezing
Never start a frozen pump. Even if it is
drained it might contain a small amount of
frozen water that locks the rotor.
Pressure and capacity data
(based on water at +20°C/68°F and at full
voltage of the motor)
Flow Master
Pressure
Flow
Bar kPa Psi
l/min USGPM
0
0
0
19.4 5.1
0.4 40
6.2
18.2 4.8
0.8 80
11.6 17
1.2 120 17.4 15.8 4.2
1.6 160 23.2 14.7 3.9
2
200 29
13.5 3.6
2.4 240 34.8 12.2 3.2
2.8 280 40.6 11.2 3
Fuse required
> English
Amp. draw
12 V
24 V
3.9 A 1.6 A
4.9 A 2.1 A
4.5
6 A 2.5 A
7.1 A 3.1 A
8 A 3.6 A
9.2 A 4.1 A
10.3 A 4.7 A
11.2 A 5.1 A
15 A
8 A
11
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