Tacmina CLPW Series, Operation Manual

Page: 14 / 68

13
Installation
Connecting
Injection point connections
The anti-siphonal check valve has a different shape depending on the material used for the liquid-end material of the pump.
First check the model of the pump to be used, and then refer to the applicable diagram below.
✽
An anti-siphonal check valve is not provided for the high-viscosity type.
A-1. VTCE/VTCF
FTCE/FTCF type
A-2. ACTF type A-4. VTCET type A-3. FTCT/6TCT type
Injection point
(Rc1/2)
Wrap sealing
tape around
here. Wrap sealing
tape around
here.
Main pipe Main pipe
Injection point
(Rc1/2or
Rc3/8)
Main pipe
Injection point
(Rc1/2)
Main pipe
Wrap sealing
tape around
here.
Wrap sealing
tape around
here.
Screw into
place.
Injection point
(Rc1/2, Nominal
diameter 16)
Proceed with the piping
with the anti-siphonal
check valve still attached.
Check cap: Outside
diameter 14mm
NOTE
•
When using a PVC or PVDF anti-siphonal check valve
Install the valve so that
the end of the injection
nozzle is positioned at the
center of the main pipe.
If the nozzle is too long, use a
saw or other tool to cut off its
end, use a file or other means
to finish the cut-off surface, and discard the metal scraps.
✽
In the case of an anti-siphonal check valve
used for sodium hypochlorite, attach the
shut-off cap to the body after cutting it.
• For maintenance
It is recommended that
the tube be attached to
the main pipe through a
valve to enable the anti-
siphonal check valve to
be replaced or cleaned,
etc.
✽
Use a valve made
of materials which will resist any corrosion
resulting from the chemical used.
Main pipe
Valve
Pipe connections
B-1. Hose connection
Model: VTCE/VTCF/6TCT/ATCF type
Insert the hose/tube firmly so that it
will not become disconnected, and
t i g h t e n t h e n u t s s e c u r e l y . D o n o t
excessively tighten the nuts. Doing so
may damage or break the joint.
Tighten up the nut appropriately after
operation has started.
B-2. Tube connection
Model: FTCE/FTCF/FTCT type
(1) Wrap sealing tape around the
threaded part of the tube fitting.
(2) Pass the tube through the tightening nut
(1), grip (2) and sleeve (3), and insert its
end until it touches the back end of the
tube-fitting body (4) on the inside.
(3) Tighten the tightening nut (1) by hand.
(4) Using the tool, tighten the tightening nut (1)
in such a way that the gap (area “a” in the
figure) between the tube-fitting body (4) and
tightening nut (1) is approximately 1.5 mm.
✽
Bear in mind that the joint may break if
tightening nut (1) is tightened too much.
When bending the tube, be sure to leave
sufficient leeway (R100 or more) in the
bending so that the tube will not break.
B-3. PA tube connection
Model: VTCET (boiler) type
(1) Pass the nut (1) and sleeve (2)
over the tube, and insert the tube
so that its end touches the back of
the groove in the body.
(2) After manually tightening up the
nut all the way, use a monkey
wrench or spanner to secure the
flareless joint, and tighten up the
nut by two or so turns.
✽
Leave a gap (area “B” in the
figure) of 2 mm or more between
the discharge-side joint and the
flareless joint.
Nut
Retaining ring*
1
Hose
* This part is not provided on the 6TCT type.
✽
Take care not to tighten the nut too much.
Nut (1)
Tube
Sleeve (2)
Discharge-side
joint
Flareless joint
PE/FEP tube
Discharge-side
joint
Nut (1)
Grip (2)
Tube fitting (4)
Sleeve (3)
A
B
08-32̲EM-127̲PW(E).indd 13 2014/11/17 11:43:53