Pump Solutions Group PZiG Series - Manual (Page 8)

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Installation
This section mainly describes hose connection type piping.
Contact TACMINA separately for details of other types of piping.
Piping
Requests during Piping
● Pulsation
• The hoses on this pump vibrate as this pump
generates pulsation. Secure this pump in such a
way that hoses do not vibrate.
• We recommend installing a damper to reduce
pulsation. Contact TACMINA separately.
● Maintenance
• When removing hoses during maintenance, for
example, and the same hose is to be used again,
cut the tip of the hose by about 10 mm before
inserting it.
• Before performing maintenance, open the dis-
charge-side piping to release pressure to the air.
● Length of Piping
• If the hose is too long, pressure loss might
increase, causing the pump's permissible pres-
sure to be exceeded and overfeed to occur or the
pulsation to occur on the piping.
• A total of three meters of hose is provided on the
discharge and suction side. In particular, when
extending the discharge-side piping beyond two
meters, pressure loss might exceed the pump's
maximum discharge pressure. So, a damper
must be installed or thicker piping must be pro-
vided. Notify your supplying agent of (1) viscosity
of the liquid, (2) length (positional relationship) of
the piping, (3) specific gravity of the liquid, and
other information. On the 1300 type, when
extending the discharge-side piping beyond two
meters, be sure to install a damper. Select a
damper and the optimum piping size.
● Bending Hoses
• Provide sufficient margin (in the case of 12 ✕ 18
mm dia. PVC braided hose, a radius of 100 mm
or more) to prevent the hose from folding.
Prevent hoses from being folded, rubbed, cut, or
trodden on. Failure to do so might damage the
hose.
• Minimize bending of hoses that might lead to pip-
ing becoming bent or resistance occurring in the
flow in joints, for example.
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