Trillium ROTO-JET VSR 175, Руководство по разборке и сборке

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VSR 175 44
5. HYDROSTATIC PRESSURE TEST
5.1 Hydrostatic pressure test cannot be performed on a fully assembled pump because of
possible seal damage. Parts are hydrostatic pressure tested at the factory.
6. BALANCING
Dynamic balancing of the pump’s rotating assembly is necessary to eliminate excessive out-of
balance conditions which can cause vibration damage to the pump. Although each pump is
dynamically balanced at the factory prior to shipment, factors such as a change in the fluid
specific gravity or extensive repairs on the pump may require the rebalancing of the rotating
assembly. The following instructions are applicable to an assembled pump motor with only the
rotor and rotor cover installed.
6.1 BALANCING PROCEDURE
WARNING: When lifting the pump into the vertical position with or without the use of the
assembly stand a swivel hoist ring shall be used in place of the lifting eye. Reference
APPENDIX A Drawing.
CAUTION: Sufficient guarding should be used when balancing the rotating assembly.
6.1.1. Secure the motor/rotor assembly in a vertical position, with the rotor cover facing up.
6.1.2. Completely fill the rotor assembly with the specific gravity fluid required. The standard
fluid is water.
6.1.2.1. When the fluid to be pumped has a specific gravity of less than .7 or greater than
1.3, a special balance is required. A special fluid will be used for balancing that
will match the fluid that will be pumped.
6.1.3. Manually rotate the rotor assembly to remove air bubbles from the fluid. When all of the
air bubbles have been removed, plug the opening in the rotor cover.
6.1.4. Secure the motor/rotor assembly in a horizontal position on a solid foundation.
6.1.5. Using the motor as the driver, balance the motor/rotor assembly at the following speeds:
6.1.5.1. The initial balance should be done at 1000 rpm and then repeated at 4000 rpm
or operating speed, whichever is greater.
6.1.6. Perform a single plane balance by removing material from the rotor cover balance plane
as shown on Figure 7. The rotor balance plane can also be used if required for
additional weight removal.
6.1.7. Follow the balancing procedure provided with the instrumentation being used to balance
the motor/rotor assembly.