User Manual

ManualsBrandsPump Solutions Group ManualsPumpsNeptune Solenoid-driven Diaphragm Metering Pump ARPZ-31_61_12

Installation

Suction-side joint

Suction valve

Draining of washing water

Suction-side pipe

(downward gradient)

Discharge-side joint

Air-release hose

Relief valve

Relief pipe

Tank

Main pipe

Air-release joint

3-way

valve

Metering

pump

Anti-siphon

check valve

w/ duck-bill cap

Discharge-

side pipe

3-way

joint

Installation is described with an example using ARPZ-31 and TACMINA tank.

•

Unlike other models, this pump has a discharge-side joint at the front of the pump head and an air-release side joint on its top.

• It is extremely dangerous for the user to forget to open the valve or for there to be the clogging of foreign matter inside

the pump’s discharge-side pipe. Be absolutely sure to install a relief valve, which will automatically release abnormally

high pressure levels, on the discharge-side pipe.

• Install a valve for releasing abnormal pressure that has built up inside the discharge-side pipe. The 3-way valve on the

washing water line may be used instead.

• To prevent gas lock and other such types of trouble, be absolutely sure to use the pump with a push-in pipe (when the

pump is to be placed lower than the tank).

• In order to prevent gas lock caused by gases generated and building up inside the pipes, make the pipe connections

as short as possible.

Piping

Model w/ automatic air-release function for injection of sodium hypochlorite: ARPZ-31/61/12

■ When installing the pump

below the tank

✽ Do not install the pump above the tank.

(1)

Connect the suction valve of the tank and the suction-

side joint of the pump using the hose. When doing

this, tilt the pipe at a downward gradient so that no air

will be trapped inside the pipe.

(2) Connect the tube to the discharge-side joint of the

pump.

(3) Attach a 3-way joint to the discharge-side tube (near

the pump’s discharge-side joint), and install a relief

valve. Return the end of the relief pipe to the tank or

other container.

(4) Connect the end of the other discharge-side tube

extending from the 3-way joint to the main pipe

(injection point). When doing this, attach the anti-

siphon check valve with duck-bill cap at the injec-

tion-point side end of the hose/tube.

(5) Attach one end of the air-release hose to the air-

release port, and return the other end to the tank or

other container.

✽ If it is unavoidable for the pump to be placed higher

than the tank, be absolutely sure to connect the foot

valve supplied to the end of the suction-side hose

to ensure that no dirt or foreign matter will be mixed

inside the pump head or valve seat.

✽ It is also recommended that a valve, meter, etc. be

installed to make it easy to carry out maintenance

and other such jobs.

IMPORTANT

• It is recommended that a washing water line be provided in the piping.

(A 3-way valve for releasing abnormally high pressure levels may be used instead.)

•

Take steps to use up the sodium hypochlorite in as short a period as possible (10 to 20 days in hot weather).

• When diluting sodium hypochlorite, use (1) pure water (purified water), (2) water that has been passed

through a water softener or (3) city water that has been purified.

Metering pump