Advertisement
Operation and Maintenance
Check oil level prior to starting and ensure
trouble free water supply.
IMPORTANT! If there is a danger of frost,
the water in the pump and in the pump fittings
(particularly the unloader valve) must be
emptied. The second discharge port can
also be used and the pump run "dry" for 1-2
minutes for this purpose.
Oil: Use only 101 fluid ounces (3.0 L) of SAE
90 Industrial gear lube oil. (Giant's p/n 01154)
Initial change after 50 operating hours and
then every 1000 operating hours, or after one
year if used less.
Caution! When operating in damp places
or with high temperature fluctuations,
condensate (frothy oil) might occur in the
gear box. In this situation, change the oil
immediately. Keep NPSH under control.
Maximum input pressure is 145 PSI (10
bar), the maximun suction head is -4.35 PSI
(-0.3 bar). Make sure that suction pulsation
is sufficiently dampened. Water column
resonance must be avoided.
Safety Rules
Pump operation without safety valve as well
as any excess in temperature or speed limits
automatically voids the warranty. The safety
valve must be regulated in accordance with
the guidelines for liquid spraying units so that
the admissible operating pressure can not be
exceeded by more than 10%.
NOTE: Contact Giant Industries for Service School Information. Phone: (419)-531-4600
INSTALLATION INSTRUCTIONS
2
When the pump is in operation, the open shaft
end must be covered up by a shaft protector
(21). For direct drive operations, the driven
shaft side and coupling must have a guard
over the connected area.
Pressure in discharge line and in pump must
be at zero before any maintenance to the
pump takes place. Close the fluid supply to
the inlet port(s). Disconnect fuses to ensure
that the driving motor does not accidentally
get switched on. Make sure that all parts on
the pressure side of the unit are vented and
refilled, with pressure at zero, before starting
the pump.
In order to prevent air, or air/water mixture
being absorbed and to prevent cavitation
occurring, the pump-npshr, positive suction
head and water temperature must be kept
under control.
Required NPSH refers to water: Specific
weight 0.0624 lb/ft
(1kg/dm
3
maximum permissible revolutions.
Cavitation and/or compression of gases
lead to uncontrollable pressure kicks which
can ruin pump and unit parts and also
be dangerous to the operator or anyone
standing nearby.
Giant pumps are suitable for pumping clean
water and other non-aggressive or abrasive
media with a specific weight similar to water.
Before pumping other liquids - especially
inflammable, explosive and toxic media
- the pump manufacturer must under all
circumstances be consulted with regard
to the resistance of the pump material.
It is the responsibility of the equipment
manufacturer and/or operator to ensure that
all pertinent safety regulations are adhered
to.
), viscosity 1°E at
3
Advertisement
