Richter MNKA-B Series (ASME) - Manual (Page 8)

Installation and Operating Manual
Series MNKA-B, acc. to ASME/ANSI
9250-055-en Revision 01
TM 5976 MPE/Wm Page 8 Edition 10/2004
The following Table 1 contains the resultant
theoretical limit values of the temperature of the liquid
medium allowing for the temperature classes
according to European EN 13463-1.
Table 1
Limit value of the
temperature of the fluid
Temperature class
acc. to EN 13463-1
PFA/PTFE
T6 1) (185 °F, 85 °C)
T5 2) (212 °F, 100 °C)
T4 (275 °F, 135 °C)
T3 (392 °F, 200 °C)
T2 (572 °F, 300 °C)
T1 (842 °F, 450 °C)
167 °F 75 °C 1)
194 °F 90 °C 1 )
257 °F 125 °C 1)
356 °F 150 °C 2)
356 °F 150 °C 2)
356 °F 150 °C 2)
1) The limit values specified for the temperature of the medium at
the pump inlet are determined for the most unfavourable case
(high speed, low flow, low heat capacity of the medium, ....).
Under favourable operating conditions the limit values specified
may be increased by up to 5 K after consultation with the
manufacturer.
2) For ambient temperatures lower than 40 °C higher medium
temperatures may also be permitted after consultation with the
manufacturer.
The plant customer must ensure that the
prescribed operating temperature is observed.
The maximum admissible temperature of the
liquid medium at the pump inlet depends on the
temperature class and the selected lining material
required in each case.
The admissible operating temperature of the
pump is indicated in the data sheet.
2.5.8 Maintenance
For safe and reliable operation, it must be ensured
with regular inspection intervals that the unit is
properly serviced and kept in a perfect technical
condition.
Example: Functioning of the ball bearings. The mode
of operation and operating conditions largely
determine the actual service life that can be attained.
Regular checks of the bearings and their running
noise can prevent excess temperatures due to hot-
running bearings, collision of the outer magnet
assembly against the lantern or even defective
bearing seals.
If auxiliary systems (e.g. external flushing, cooling,
heating) are installed, a check must be made to see
whether monitoring facilities are required to safeguard
their operation.
2.5.9 Electric peripheral equipment
Electric peripheral equipment, e.g. pressure,
temperature and flow sensors etc. must
comply with the prevailing safety
requirements and explosion protection provisions.
3 Transport and storage
The pump or the unit must be transported
properly. It must be ensured that during
transport the pump/unit remains in the
horizontal position and does not slip out of the
transport suspension points.
A pump or motor can be suspended from the ring bolt
provided for this purpose.
The suspension points are not suitable for
transporting a complete unit, i.e. pump with base plate
and motor.
In this case, the slinging points for the ropes on the
base plate are to be used. See Fig. 1.
The slinging ropes must not be attached to free shaft
ends or to the ring bolt of the motor.
Directly after receipt of the goods, the
consignment must be checked for completeness
and any in-transit damage.
Damaged pumps must not be installed in the plant.
When unpacking magnetic drives as single
parts, the relevant notes in Section 7.5.2
must be observed.
Fig. 1
Handle goods carefully to prevent damage.
Flange covers serve as protection during transport
and must not be removed.