Hydrotech C, C PLUS, A PLUS, E, E-DC and E PLUS Series PULSAtron - Manual (Page 10)

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4.3 WIRING
• —Risk of electrical shock. This pump is supplied with a
three-prong grounding type power plug. To reduce risk of electric shock,
connect only to a properly grounded, grounding type receptacle.
• The metering pump should be wired to an electrical source, which conforms
to those on the pump data label. Applying higher voltage than the pump is
rated for will damage the internal circuit.
• In the electronic circuit of the control unit, measures for surge voltage are
made by means of surge absorbing elements and high voltage semiconduc-
tors. Nevertheless, excessive surge voltage may cause failure in some areas.
Therefore, the receptacle should not be used in common with heavy electrical
equipment, which generates high voltage. If this is unavoidable however,
measures should be taken by (a) the installation of a surge-absorbing element
(varistor of min. surge resistance 2000A) to the power supply connection of
the pump, or (b) the installation of a noise suppression transformer.
• Signal input to the external pulse signal input terminals ([EXTERNAL], [STOP])
must be a no-voltage signal from relay-contacts etc. and the input of other
signals is prohibited. (In the case of relay contacts, 100 ohms or below when
ON and 1-meg ohms or above when OFF). The pulse duration of the input signal
must be 10 milliseconds or over and the frequency of the input signal must not
exceed 125 times per minute. Signal cord is provided with the pump.
4.4 WELL PUMP SYSTEM INSTALLATION
Ensure that the metering pump voltage matches
the voltage of the well pump. Typical well pump
electrical circuits are shown in Figure 8. All elec-
tric wiring should be installed in accordance to
local codes by a licensed electrician.
Install the backpressure/injection (Figure 7) on
the discharge side of the metering pump into a
tee which is installed into the water line going to
the pressure tank.
Pumps carrying the "ETL Sanitation" (tested to NSF Standard-50) marks are listed for
swimming pools, spas and hot tubs, and when proper materials are selected, are capable
of handling but not linited to the following chemical solutions:
12% ALUMINUM SULPHATE, 5% SODIUM CARBONATE,
2% CALCIUM HYPOCHLORITE, 10% SODIUM HYDROXIDE,
12.5% SODIUM HYPOCHLORITE, 10% HYDROCHLORIC ACID
FIGURE 7