Tuthill 6000, Инструкция по установке и обслуживанию

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Service Manual # 67
Page 8 of 36
Section 7: Method Of Drive
Direct drive through a traditional flexible coupling is recommended. However, do not expect the
flexible coupling to compensate for misalignment. Contact the coupling manufacturer to determine
the maximum amount of misalignment which the coupling can tolerate.
All pump and motor units must be properly aligned during assembly and periodically checked since
misalignment may occur later due to changing conditions.
Pipe strain can force the pump and motor shaft out of alignment. Therefore, all piping to the pump
must be properly supported. Do not allow the pump to act as a pipe support.
Provide for proper expansion of pipes when handling hot liquids. Allow pump to reach operating
temperatures and then re-check alignment.
Provide sufficient clearance, 1/16 - 1/18 inches (1.5 - 3 mm) between coupling halves with shaft in
closest operating position.
Never depend upon sight or feel. Use proper gauges when aligning a pump.
Never operate pump without all guards in place.
Section 8: Location
The pump should be located as close to the source of supply as conditions permit and if possible,
below the level of the liquid in the reservoir. When necessary to locate the pump in a pit, provisions
should be made to safeguard against flooding. Care must be taken to properly support the suction
and discharge piping so that no strain is put on the pump due to either weight or expansion. Piping
strain can result in misalignment, hot bearings, worn couplings, and vibration. It is important that
the piping used be clean and free of chips or scales.
Section 9: Strainer Protection
Strainers are used to remove contaminated particles from the fluid system and extend pump life.
Every pump should be protected from these particles by a strainer in the suction line.
Strainer size and mesh of screen is determined by rate of flow and viscosity of fluid. Consult
strainer manufacturer for recommendations.
Never use a strainer with built-in automatic by-pass on the suction line set to open under 30 inch
(750 mm) Hg. vacuum.
Install strainer according to the designated direction of flow.
Have strainer accessible for servicing.
Use a duplex type strainer when shutdown during service is not permitted.
Provide a vacuum gauge in the suction line for determining when the strainer requires cleaning.
Make certain strainer baskets are properly reinforced so as not to collapse under 30 inch (750 mm)
Hg. vacuum.