6.6 Temperature changes and max. temperature:
The following precautions should be observed regarding product
temperature changes in the pump.
High efficiency and Super tight (NGA) rotors:
Pumps fitted with high efficiency or Super tight rotors should be
treated with caution when the product temperature changes.
Multi-duty rotors:
Pumps fitted with multi-duty rotors are designed to withstand an
immediate product temperature change corresponding to a CIP
cleaning regime.
High temperature rotors:
Pumps fitted with High temperature rotors are designed to withstand
an immediate product temperature change corresponding to a SIP
procedure.
SIP:
The pumps with High efficiency, Super tight or Multi-Duty rotors are
stationary (not running) prior to SIP.
The permissible product temperatures and their permissible changes
can be found in the table below:
At temperature changes above max ∆T the product temperature
should be increased gradually, according to the formula below:
Required ∆T - Max ∆T
x 5 sec. = TIME in sec.
2.1°C
In case of increased temperature changes we recommend using
electronic control.
6.7 Maximum permissable rotational speed
The maximum rotational speed specified below must not be
exceeded.
DW1: max. 1400 rpm
DW2: max. 1400 rpm
DW3: max. 1400 rpm
DW4: max. 1200 rpm
DW5: max. 1000 rpm
DW6: max. 800 rpm
DW7: max. 600 rpm
DW1 - 4/xxx_600: max. 600 rpm
6. Technical data
Rotor type Material
Max product
temperature
Max ∆T
Super tight
Heigh efficiency
Heigh efficiency
Multi-Duty
Heigh temperature
Heigh temperature
NGA
NGA
316L
316L
NGA
316L
180°C
180°C
110°C
130°C
210°C
180°C
80°C
80°C
50°C
110°C
180°C
120°C
To Next Page
Loading...
