KYP Serisi
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4.1.3. Impeller
The closed radial type impeller of the pump is balanced
dynamically in an electronic balance machine. The
thrust (axial force) is balanced with the back wear ring
and balance holes.
4.1.4. Shaft
The shaft, impeller and other parts of the pump is
designed to be dismountable without moving (dislodge)
the suction and discharge pipes and volute of the pump.
In this way, the installation and maintenance
operations can be performed very easily.
4.1.5. Bearing and Lubrication
Rolling bearings are not used in NMM type pumps.
Motor bearing is enough for countervailing all axial and
radial forces.
4.1.6. Seals
In standard production, various mechanical seal types
(e.g. bellow type, spring actuated type) are used for
sealing.
4.2. Construction of Pump Group
4.2.1. Drive
TEFC (Totally Enclosed Fan Cooled) 3 phase, squirrel
caged, in accordance to DIN 42673, IM 1001B3 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 4 kW, 3x380 V (Y)
More than 4 kW, 3x380V (∆)+(Y/ ∆)
4.2.2. Coupling and Coupling Guard
In NMM type pumps, a clamped type rigid coupling is
used. A coupling guard is provided in accordance with
EN 294 in the rigid coupling area.
Pump can only be run with a guard in
accordance with EN 294 according to safety
instructions.
If there is no 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.
