AXEON Aquatec 550-Series - Manual

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Aquatec, IMI-135, REV A
550X Series Aquajet Variable Speed Delivery/Demand Pumps
The basic “VSP” pump is controlled by a built-in pressure sensing transducer and associated solid state control
circuitry. When a faucet or valve is opened down stream of the pump, line pressure drops thus starting the
pump automatically. During operation the control circuit regulates the speed of the motor so the flow matches
the demand at a preset operation pressure. The pump label indicates the operating pressure under the heading
Pressure Regulated at XX PSI. The operating pressure is preset in the control circuit at the factory and is not
field adjustable. The pump also incorporates check valves to keep the line pressurized and an internal relief valve
to prevent over-pressure. The relief pressure is also preset at the factory, and although a hex head set screw used
to control the relief pressure is accessible on the pump head, it is not recommended that this screw is tampered
with. Changing the factory preset relief pressure may prevent the pump from shutting off. The control circuit is
housed inside the mounting base. There are no user serviceable parts inside the mounting base. Opening the
access cover is not recommended and creates a shock hazard.
Read the additional OPERATIONAL AND INSTALLATION GUIDELINES on the other side
carefully before starting to install the pump. Consult the factory if there is any question.
1. Determine the optimum location for your pump before proceeding. To minimize risk for air
entrapment the pump may preferably be mounted vertically, pumphead up. The mounting bracket
has 4 rubber grommets for vibration dampening. Use #10 screws and washers, be sure not to over-
compress the grommets.
2. The 550X pump is designed to use customized O-ring fittings. Aquatec offers plastic barb fittings
in straight and elbow configuration for 3/8”, 1/2”, and 5/8” ID tubing. Be sure to select a tubing
size that prevents excessive pressure drops before and after the pump. For runs up to 50 feet and
flows less than 2 GPM, use 3/8”. Use 1/2” tubing for flows up to 3.5 GPM, and 5/8” tubing for
greater flows. For longer runs, go up one tubing size. If the pump is to be connected to rigid
plumbing such as copper, PVC, or PEX, Aquatec strongly recommends using a piece of flex hose as
a pulsation dampener between the pump and the rest of the plumbing. Aquatec offers a convenient
pre-assembled pulsation dampener (part number 25-174) that terminates with a 1/2 NPT thread
making transitions to rigid plumbing easy. Be sure that there is no stress on the fittings. Once
installed, lock each fitting in place with the slide.
3. Check the pump label to verify the voltage rating. Prepare to connect the pump to appropriate
power source. For pumps with power cords, use with grounded outlets only. Do not do a
“permanent installation” using an extension cord. Never remove the ground pin from the power
plug. For pumps with individual power leads, connect the black lead wire to the “hot” side, the
white lead wire to “neutral” and the green wire to “ground”. If the pump is hardwired, be sure to
include a switch so the pump can be manually turned on and off.
4. The Aquajet variable speed pump is now ready for operation. Open the inlet valve and open the
discharge or dispensing valve. Power up the pump and allow water to flow for a few seconds. If
the pump runs erratically, leave the valve open, disconnect the pump from power and reconnect it
facilitating the air purging.
5. Once the air is purged the pump will start building pressure, eventually reaching the regulated
pressure. Close the valve and the pump should shut off. Check for fitting leaks.
NOTE: Further adjustments should not be necessary although it may take several days of operation
before all the air has been purged and the system is fully stabilized.
6. Cycling. In response to the characteristics of the system in which the pump is installed (the
flexibility and length of tubing etc.) the pump may cycle a few times after shut-off. This is normal.
When cycling the pump should do so at a very low speed.
SERVICING
Every Year - Check System against operating standards.
Every 5 Years - Replace diaphragm and check against operating standards.