Bell & Gossett P81568D Series 1535 - Manual (Page 12)

Guideline Explanation/comment
If the pump location is overhead, undertake special
precautions to reduce possible noise transmission.
Consider a consultation with a noise specialist.
When possible, locate the pump below the fluid level. This facilitates priming, ensures a steady flow of liquid,
and provides a positive suction head on the pump.
Make sure that the maximum suction lift does not
exceed 15.0 ft. (4.5 m). This includes friction losses.
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Mode of discharge
You can install this pump to discharge either vertically or horizontally. The arrow on the
pump body must point in the direction of the flow.
Foundation requirements
Requirements
• The foundation must be able to absorb any type of vibration and form a permanent,
rigid support for the unit.
• The foundation must weigh at least 2-1/2 times the weight of the pump unit.
• Provide a flat, substantial concrete foundation in order to prevent strain and distortion
when you tighten the foundation bolts.
• Sleeve-type and J-type foundation bolts are most commonly used. Both designs allow
movement for the final bolt adjustment.
• Tie the concrete pad in with the finished floor.
• Use some type of expansion fitting in order to facilitate easy servicing. Insert the female
portion into a suitable hole in the pad so that its top surface is flush with the pad
surface. Thus, when the hold-down bolts are removed, the motor can be removed by
sliding it back from the pump.
Bolt installation diagram
Correct
Incorrect
Installation
Series 1535 Installation, Operation, and Maintenance Manual 11