CSI ALFA LAVAL GHH-10, Instruction Manual

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Rubber Materials
O-rings of different materials are available.
The Table below indicates the ranges of appli­
cation for the packing materials.
Operating Instructions
Overload
Concentration, temperature, etc. can affect
the rubber considerably. The table only
states guide values.
The performance curves* are valid for pumping
of liquids with the density and viscosity of water.
The power will increase when liquids with higher
density and/or viscosity are pumped. The motor
may then be overloaded.
Pumps for certain duties are fitted with motors
which are not large enough for the entire capac­
ity range of the pump. The motor may become
overloaded if the pressure after the pump is
lowered; the capacity therefore increases. The
power consumption must be checked when the
operating conditions are altered. This can be
done by measuring the current to the motor and
comparing it with the rated current on the motor
plate or by means of the pump performance
curves.
When in doubt, please contact G/H Products
Corp.
Motor (N EMA)
Should it be necessary to replace the motor, in
most cases this can be done without replacing
any other parts if the motor meets the demands
of the standard.
It is important to check the direction of rotation The capacity, and the power consumption, can
(counter clockwise) if the electric motor has be limited by reducing the impeller diameter,
been replaced or repaired. This should be done restricting the pump discharge, or reducing
with as short a start as possible. pump speed with a speed controller.
See Pre-Startup Checklist
before starting the
* Pump performance curves can be ordered
pump.
separately.
Rubber Weather Milk
Hot water Strong Petrol
type ozone
Cream Steam and oil,fats
Weak oxidi- (not milk
acids zing and cream)
Alkalii acids
EPDM
Excellent Good
Excellent Good Bad
(stand)
Nitrile
Not Good
Good Not Good
satis-
satis-
factory
factory
Viton
Excellent Good
Excellent* Good Good
PTFE Excellent Excellent Excellent
Excellent Excellent
* Except steam, water >175
°
F, and sodium hydroxide (NaOH).
Solvents
Bad (Good for aceto-
ne and alcohols only)
Bad
Good (EPDM for
acetone and alco-
hols)
Excellent
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