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４．The tank should use as big capacity as possible.
The recommended tank capacity is at least three times of discharge amount per
minute.
Using a tank with excessively small capacity may cause problems, such as the fluid
temperature increasing, the strainer clogging with cutting chips faster than usual,
reduction in the amount of discharge due to generation of bubbles, etc.
５．Attach to a tank, certainly fix to the hole of attachment in the flange of a pump.
Although there are 2x2 attachment holes, it is for expanding the use range and
please fix actual attachment at two places of the direction of a diagonal.
Since the attachment hole is capping, please remove only two caps to be used.
Two places which remain should not remove a cap but should use it as it is.
６．The operating liquid level is as follows.
・Highest liquid level
For safety, keep the fluid level as low as possible.
・Lowest liquid level
For safety, keep the fluid level as high as possible.
RCD-40A(E)0.75(T4)
RCD-40A(E)1.5(T4)
RCD-40B(E)1.5(T4)
RCD-40A(E)2.2(T4)
RCD-40(E)B2.2(T4)
RCD-40(H)A(E)3.0(T4)
RCD-40(H)B(E)3.0(T4)
※Please put in calmly and not to involve in air,
When putting use liquid into a tank.
７．Position change of a terminal box serves as special
specification.
Depend on specialist on the site when a change is
necessary.
The terminal box position can change a position
every 90 degrees by rearranging a motor frame.
(Refer to right figure)
５ Piping
５．１ Piping
１．Install a vibration proof joint and piping support to prevent
the piping weight from being applied directly to the pump.
２．The piping should be as following
The pipe should be as big as possible and as short as possible.
The pipe should reduce a bent elbow and a branch such as cheese. Reduce the
obstacles such as valves.
※When a pipe is long and is small, and there are many a curve and obstacles, a
discharge decreases.
３．Tighten certainly in the screw part of piping using seal adhesive to prevent water leakage.
Do not forcibly screw the pipes into the pump. Failure to observe this could damage
the joints.
The clamping torque of the screw please refer to a list shown below.
４．Take appropriate preventive measures to prevent water hammer (e.g. install an
By-pass etc.).
５．We prepare square flange as special accessories, please contact your dealer.
Highest liquid
Type
level Ａ[mm]
20
20
20
20
20
20
20
Screw size
（Ref.）Tightening torque
Rp 1̲1/2
Lowest liquid
level Ｂ[mm]
200
200
350
200
350
250
350
VC80
9:00
Discharge
180 [N･m]
23
Highest
Liquid
Level
Lowest
Liquid
Level
VC81
12:00
Terminal
Box
6:00
Basic Model
VC82
3:00
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