Seaflo 51 54 Series Manual

ADJUSTING THE BYPASS VALVE AND PRESSURE SWITCH (52A-bypass version, 54 SERIES ONLY)
TIP: Bypass adjustment should be performed by a professional technician using a
proper gauge and equipment. Without the proper equipment, you could mis-adjust the valve
or switch causing the pump to work improperly (see Caution below).
About the Bypass Valve
The pump uses a spring-loaded bypass valve to maintain smooth performance as water
demands rise and fall. When a faucet is turned on the pump is providing full water flow, so
the bypass valve is closed. But when there is little to no water demand, the bypass valve
opens to allow water to flow back from the outlet side to the inlet side, keeping a steady flow
of water within the pump with almost no cycling.
ADJUSTING THE PUMP'S SHUT-OFF PRESSURE: (1)
To raise the shut-off pressure, use a 2mm Allen
wrench to turn the pressure switch screw clockwise
to the desired pressure.
To lower the shut-off pressure, use a 2mm Allen
wrench to turn the pressure switch screw counter-
clockwise to the desired pressure.
ADJUSTING THE BYPASS: (2)
To raise the pressure at which the bypass starts
and raise the full bypass pressure, use a 2mm Allen
wrench to turn the bypass screw clockwise to the
desired pressure.
To lower the pressure at which the bypass starts
and lower the full bypass pressure, use a 2mm
Allen wrench to turn the bypass screw counter-
clockwise to the desired pressure.
ABOUT THE BYPASS (52A-BYPASS VERSION, 54 SERIES ONLY)
Please consult a professional technician in the case that the bypass needs adjustment. Improper
adjustment of the bypass may damage the pump.
The bypass comes preset for optimal operation of the pump. If your application calls for a different
setting for the bypass, you may change it yourself. Carefully tighten the screw to increase or loosen
the screw to decrease the minimum operational pressure of the bypass.
Please do follow the instruction manual to install the product. Any action outside what is
recommended in this manual may bring damage to the pump. Any inappropriate installation or
operation that causes the pump damage is not covered by warranty.
picture 2
①
pressure switch 1
②
by-pass switch 2
+
③
CAUTION: The pressure setting for full bypass
must be at least 8psi higher than the shut-off
pressure of the pump. If the switch and bypass
is adjusted too closely, the bypass and switch
shut-off can overlap and the pump will not shut
off.
CAUTION
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8
Diaphragm Pump Manual
SEAFLO 51, 52, 52A & 54 Series are 5 chambers pump that can provide max pressure of 60 PSI and 3
to 5 GPM open flow rate. They are self-priming, and can run dry without damage. They can
automatically starts and stops the pump when the faucet is opened and closed. 52 series provide a
micro cut off pressure switch. 52A series provide a TTI cut off switch, IP54 and external fuse protection
and the bypass function can be optional choose. 54 Series provide a micro cut off and bypass switch.
The bypass switch in 52A and 54 series is able to reduce rapid cycling and allow water to flow back from
the outlet side to the inlet side of the pump, which ensure the performance reliable and low current.
SEAFLO also offers a variety of easy connect fittings and filters.
FEATURES
5 chamber diaphragm pump
Continuous duty
Bypass: reduces cycling
52A-bypass version and 54 series)
-
APPLICATIONS
Yacht/RV/caravan pressurized water system
Sprayer fixtures (vehicle-mounted sprayers, electric sprayers)
Cleaning machines, humidifier, water purification, medical apparatus
Food beverage filling & liquid transfer
Solar water system
Any other pressurization system
INSTALLATION
Materials
1 diaphragm pump with related accessories
2 (at least) pieces of flexible, reinforced hose piping, with collapsing strength of twice the inlet collapsing
pressure, hose must be minimum 1/2" ID (54 series) or 3/4" ID (52 series)
4 stainless steel hose clamps and screws
4 screws to fasten the pump to the mounting surface
1 electrical cutoff switch
1 fuse
1 screwdriver
1 strong cutting implement for tubing
(if desired) Teflon tape or sealant
51, 52, 52A, 54 Series
Run dry capable for normal workloads
Automatic: controlled by pressure switch
Industry standard mounting pattern
(only for
page
1
Self priming
Quiet Operation
Ignition protected