9
WARNING:The air-driven motor of the Ruby 051-081
pumps is self-lubricating and will not require
any greasing. Therefore a void using Iubricated and non- dried air.
WARNING: ascertain that during service no anomalous noise appears. In that case, stop the
pump immediately
WARNING: ascertain that the fluid at the delivery side does not contain gas. Otherwise stop the
pump immediately
WARNING: Periodic controls must be made to ensure that there is no powder and/or deposits on
the external and internal surfaces of the pump and, if necessary, they must be cleaned with a damp
cloth
WARNING: removal of the silencer and the air supply fitting must be done when free from
powder. Before restarting the pump, ensure that no powder has entered the pneumatic distributor.
To replace worn parts, use only original spare parts
.
Failure to comply with the above may give rise to risks for the operator, the technicians, the persons,
the pump and/or the environment that cannot be ascribed to the manufacturer.
WARNING: diaphragm pumps with negative suction are affected by the following factors:
-viscosity and specific weight of the fluid;
-suction diameter and length.
Position the pump as close as possible to the point of collection {within 2.5 m.) and in any case never
more than 5 m. The diameter of the intake pipe must never be smaller than the connection of the pump,
but must be increased as the distance increases. Fluid to be pumped with negative suction must never
exceed a viscosity of 5.000 cps at 20° C and a specific weight of 1.4 Kg/I. These elements can cause
derating and reduce the duration of the diaphragm: DANGER OF PREMATURE BREAKAGE.
3.0 Installation
To be observed before installation
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Note: It is recommended to install flexible, shape and pressure resistant hoses or compensators at the
suction and pressure ports of the pump (Fig. 3). This will prevent the transfer of pulsation shocks into
the pump.
