Marco M164-681-13 User manual

30/07/19 Rev.00
© S.p.A.
INSTRUCTIONS FOR USE
SELF-PRIMING ELECTRIC PUMP
FOR TRANSFERRING VARIOUS LIQUIDS
164 681 13-US - UP12/E 24V

© S.p.A.
AIR VENT VALVE ACTIVATION
When starting the pump, or when emptying the tank, slightly open the small valve
in order to let the air out and facilitate the priming.
As soon as the pump is operating close the small valve.
ELECTRONIC PRESSURE SENSOR
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ELECTRONIC PRESSURE SENSOR WORKING DIRECTIONS
The electronic pressure sensor, through the use of a microprocessor, controls the pump's speed to
obtain the needed flow rate, with the following advantages:
- Noise reduction during operation
- The optimization of current consumption
- A strong reduction of electrical noise, thanks to the slow speed ramp up and ramp down of
the motor.
- A longer life for the whole system, thanks to less wear of pump parts compared to
conventional mechanical pressure switches.
The pressure sensor system is equipped with two LEDs: one blue and one multicolored (red, green,
and yellow).
During normal operation, the blue LED will:
- Turn on if there's liquid in the hoses.
- Turn off when there's no liquid in the hoses.
- Flash when in priming mode. The first time it senses water it keeps flashing for 10 seconds to
make sure that the water is being pumped correctly and continuously.
If the pump goes more than five times from “priming” to “no liquid” (blue led off) the circuit
turns everything off anyway, to protect the motor and the gears from running without liquid.
The multicolored LED signals:
- With solid yellow LED, that the pressure in the hoses is not the required pressure, but the
pump is trying to reach it.
- With solid green LED, that the pump has reached the target pressure, there is still liquid
demand, but the pump's speed won't be changed because the flow rate is constant.
- With flashing green LED, the pump has reached the target pressure and there is no liquid
demand, it's in stand-by with the motor off.
- With solid or slowly flashing red LED, the motor has been short circuited, something may
have blocked the gears or there could be a problem in the connection between the pump
and circuit. The red LED flashes for 30 seconds, after which the pump is re-fed up to a
maximum of 3 attempts.
On the fourth attempt, the LED remains solid red, the pump is off and should be checked for
possible permanent damage.
To reset this warning you need to reboot the circuit or press the Reset button on the control
panel, if present.
(follows)
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- With fast flashing red LED, the pump is being overloaded (due to viscous liquids or gears
overheating). While the pump is running, the speed is reduced to keep the current up to the
nominal value for 30 seconds, period after which the circuit tries to release again the motor
to its normal operating speed.
If an overload happens again, the circuit tries three time to lower the speed and it turns the
pump off. Please check that the liquid being pumped is correct for the chosen pump and that
the gears move freely without problems.
To reset this warning you have to reboot the circuit or press the Reset button on the control
panel, if present.
There are two warnings that use both LEDs:
- Red and blue LED that blink alternatively, signal that the pump has run one and a half minute
without liquid and the motor has been stopped for this reason. To reset this warning you have
to reboot the circuit or press the Reset button on the control panel, if present.
- Yellow and blue LED that blink together indicate that the power supply is providing the wrong
voltage. Please check to have the correct wire section for the power supply and a charged
battery, if present.
- Steady red and blinking Blue indicate that the pump has run for more than two hours at very
low speeds and that the motor has been stopped to prevent overheating. To reset this
warning you have to reboot the circuit or press the Reset button on the control panel, if
present.
An expansion tank of at least ½ liter is necessary in the case of short, rigid pipes or in the presence of
solenoid valves, to avoid overpressures during the closing phase caused by a water hammer effect
which could damage the pressure sensor.
The presence of a few meters of flexible pipe inside the system can prevent the installation of the
expansion tank.
Additional pressure regulators or non-return valves on the pump delivery may interfere with the
correct operation of the electronic pressure sensor.
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PRODUCT DESCRIPTION
TECHNICAL DETAILS
APPLICATIONS
FLUIDS ALLOWED / NOT ALLOWED
Ø
camper
ØWater pressure systems
ØTransfer of light weight lube oils, antifreeze
There are numerous fields of applications for the pump, however only exclusively with the
allowed liquids mentioned:
Main use as automatic pump for freshwater and sanitary water systems on boats,
Self-priming gear pump, integrated check valve and electronic pressure sensor: to be used
as automatic pump. Nickel-plated brass body, PTFE gears, stainless-steel shaft and lip seal.
The electronic pressure sensor is preset at 50.8 psi.
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Tab.1 EN
CODE TYPE VOLT
AWG 1250.8 lb 9.7164 681 13-US 24V 15
IP 67 Protection
(*) Internal tube 0.6 in / (**) Length up to 6.6 ft
AUP12/E gpm 9.5 psi
FUSE WIRE SIZE (**)WEIGHTPRESSUREFLOW RATE (*)
Tab.2 EN
WA TE R (max 40 °C -1 04 °F)
PE TROL (GASOLINE ) •
FLAMMA BLE LIQU IDS with PM < 38 °C -100 °F •
LIQU IDS W ITH VISC OSITY > 2 0 cSt •
CORROSIVE C H EMICA L P RODU C TS • •
SOLVE NTS • •
ISO 884 6 C omplia nt Device
INJURY TO
PERSONNEL
DAMAGE TO SEALS
OK
NO
LIQ U ID S D AN GERS
W ARRANTY EXPIRES IF M AX FLU ID
TE MPERATU RE IS EXCEEDED
FIRE / EXPLOSION
MOTOR
OVERHEATING
PUMP CORROSION