Mas Grup
4
4.1.1. Locations of Flange
– Flanges
Suction and discharge flanges are in accordance to DIN 2535. Suction
opening can be rotated to the right, left and top with a 90 0 interval.
4.1.2. Auxiliary Fittings
Please refer to the technical drawing of the pump for necessary auxiliary
fittings.
4.1.3. Impeller
Impellers are manufactured as stainless steel by precision casting
technique. The closed radial type impeller of the pump is balanced
dynamically in an electronic balance machine.
4.1.4. Shaft
In KMU-V type pumps, precision polished shafts made of 13% chromed
stainless steel are used. Pump shaft has the same constant diameter
along its length. In this way, it is very easy to mount and dismantle the
pump from both sides.
4.1.5. Bearing and Lubrication
At the bottom of the pump there is journal bearing which carries the
radial loads. There is no bearing on pumps. Motor bearings carry the
axial loads.
4.1.6. Seals
In standard production, standard mechanical seal types are used for
sealing.
Non-cooled packing is standard. (It is acceptable up to 90
°C )
Cooling with water is optional for mechanical seal applications. (90 -
140
°C)
4.2. Construction of Pump Group
4.2.1. Drive
TEFC (Totally Enclosed Fan Cooled) 3 phase, squirrel caged, in
accordance to DIN 42673, IMB3 type electrical motor which complies with
DIN IEC and VDE is used to drive the pump in proper speed and power.
Specifications of electrical motor;
Isolation class:
F
Protection class:
IP 54-IP 55
Frequency:
50 Hz
Running type:
S1
Start up type:
Up to 2 kW, 1x220 V (Monophase) or
Up to 4 kW, 3x380 V (Y)
More than 4 kW,
3x380V (Δ)+(Y/ Δ)
4.2.2. Coupling and Coupling Guard
A flexible shaft coupling with or without secondary component in
accordance with DIN 740 is used. A coupling guard is given in
accordance with EN 953 in case of the pump group includes the coupling
and chassis.
Pump can only be run with a couplingguard in accordance with EN
953 according to safety instructions.
If there is no coupling cover, it is provided by the operator.
5. TRANSPORT AND STORAGE
Suction, discharge and all auxiliary fittings must be closed during
transport and storage. Dead-end covers must be removed while the pump
unit is being installed.
5.1. Transport
Pump and pump group must be carried safely to the installation location
by lifting equipments.
CAUTION
Current general lifting safety instructions must be applied. Please use a
suspension system shown in figure while you are carrying and lifting the
pump unit. The suspension rings may be broken because of the
excessive load and may result in a
damage of the pump. Prefer fabric
cable for suspension.
Figure 2:
Transport of Pump Group
Incorrect lifting may damage the pump unit and cause injuries.
Damages caused in transport
Check the pump when it is delivered to you. Please let us know of there is
any damage.
5.2. Storage
Please keep the unit clean and dry area during storage.
If the pump is out of use for a long time, please consider the instructions
below.
1. If there is water inside the pump, drain it.
2. Clean the pump casing and impeller by jetting clean water for a short
time.
3. Empty water inside the pump casing, suction line and discharge line.
4. Add small amount of antifreeze inside the pump casing if it is not
possible to empty it completely. Rotate the pump shaft by hand to mix
the antifreeze.
5. Close the suction and discharge exits with gasket
6. Spray an anti-corrosive into the pump casing.
7. Rotate the pump shaft by hand once in every month, in order to protect
it from freezing and to lubricate the bearings.
