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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 are determined by the rate of flow and viscosity of the
fluid. Consult the strainer manufacturer for recommendations.
Never use a strainer with a built-in automatic by-pass on the suction line set to open under 30” Hg. vacuum. Install the strainer
according to the designated direction of flow, locating it so that it is accessible for servicing. Use a duplex type strainer when shutdown
during service is not possible.
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” Hg. vacuum.
WARNING
All Tuthill pumps contain residual 200 SSU lube oil from the factory test. Determine if this is compatible with the fluid you are pumping.
If the fluid is incompatible, consult the factory. If the pump is to operate at elevated temperatures, it should be brought up to operating
temperature gradually. Rapid or sudden introduction of liquid at an elevated temperature into the cold liquid chamber of the pump
could cause damage to the seal or other internal parts.
DO NOT RUN THE PUMP DRY
. This could cause severe damage to the seal,
bushing and/or metal parts.
Startup
Prior to starting the pump double check the following.
• Pressure and vacuum gauges should be installed as close as possible to the pump
• Rotate pump shaft to ensure it turns freely without binding
• Recheck alignment and ensure all guards are in place
• Make sure piping is independently supported and no strain is being transmitted to the pump
• Make sure the safety relief valve is installed correctly
• Check pump rotation
• Open suction and discharge gate valves
Check for any leaks once gate valves are open. After completing these checks the pump can be started.
WARNING
THE PUMP SHOULD NOT BE RUN DRY
. If after approximately 60 seconds there is no discharge of liquid, stop the pump and
investigate the possible cause. Failure to comply with this could cause severe damage to internal seals, bushings and/or metal parts.
Failure to follow these instructions could result in serious bodily injury or death. Do not attempt to work on any Tuthill pump installation
before completing the steps below. Disconnect the drive so that it cannot be started while work is being performed. Review the Material
Safety Data Sheet (MSDS) applicable to the liquid being pumped to determine its characteristics and the precautions necessary to
ensure safe handling. Vent all pressure within the pump through the suction or discharge lines. All Tuthill pumps contain residual 200
SSU lube oil from the factory production test. Determine if this is compatible with the fluid you are pumping. If the fluid is incompatible,
consult the factory.