Controls On System - Goldacres ZETA Series Operator And Parts Manual

Department of UDOR.
Inlet And Outlet Of The Pump
The Inlet of the liquid to be pumped, also
called intake or supply, is generally of larger
diameter than the Outlet, also called delivery.
! The Inlet and Outlet CANNOT be inverted.
Inlet Conditions (Suction)
Make sure the supply line is connected
correctly and that it complies with the
following requisites:
- Any point of the inlet pipeline cannot be
smaller than the diameter of the Pump
inlet.
- Be absolutely leak-proof to avoid any air
infiltration.
- Not have 90° bends near the Pump inlet.
- Not have contractions or restrictions.
- Avoid any turbulence near the Pump inlet
and in the supply tank.
- If an inlet filter is used, it must allow 200%
more flow than the flow required by the
Pump. It must not cause any contraction
or any pressure drop. The filter should
grant a filtration degree between 32 and 50
Mesh and should be cleaned on a regular
basis to ensure its proper functionality.
- Maximum inlet pressure admitted: 0.5 bar
(7 PSI).
- Maximum negative inlet pressure
admitted:-0.2 bar (-3 PSI) [-6 inch.Hg].
- Maximum offset admitted between pump
and supply source underneath: 2m. (6.5ft.).
Outlet Conditions
Make sure the delivery line and all the
accessories are connected correctly, secured
firmly, hermetically sealed and that the pipes
are sized appropriately. All pressurised pipes
must be marked durably with the maximum
admitted pressure, which must never be less
than the maximum working pressure of the
Pump, written on the Label.
Speed and Rotation Direction
The rotation speed of the shaft of the
!
Pump must never exceed the RPM written
on the Label of the actual Pump.
The minimum RPM admitted is: maximum
RPM x 0.6.
The rotation direction of the shaft of UDOR
Pumps may be clockwise or anticlockwise.

Controls on System

Unloader Valve
A pressure regulator valve must be installed to
avoid the pressure exceeding the maximum
limit indicated on the Label of the Pump.
Use of the Pump, even for a short period,
!
with a pressure higher than such limit
would damage the Pump itself.
The regulator valve shall be compatible
with the maximum pressure, flow rate and
temperature values written on the Label and in
the "INLET CONDITIONS".
Incorrect installation of the pressure
!
regulator valve could cause serious
personal injuries and damage to property
as well as seriously damaging the actual
Pump.
The circuit must be equipped with another
safety valve to prevent the maximum pressure
from being exceeded in the case of anomalies
in the pressure regulator valve.
Nozzle
A deteriorated nozzle could cause a drop
in pressure; in this case, do not adjust the
pressure regulator valve in the attempt to
increase the pressure of the system because
when the delivery line closes, this would cause
a boost in pressure, which could damage the
Pump.
If the pressure drops, it is advisable to replace
the nozzle and adjust the system's pressure
again.
The flow rate of the Pump must be at least
10% higher than the flow rate that the utilities
demand; the excess flow rate must be
discharged.
Pulsation Dampener (Accumulator)
Before starting the Pump, verify the air
pressure in the accumulator, if present.
This operation may be carried out, with the
Pump off, connecting an air source to the
inflation valve.
The air pressure should be checked
periodically.
!
Using the Pump without air in the
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