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Doc No: OMM50001254
Rev: A Page 11 of 47
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC.
For direct-coupled or spline-driven units, ensure that the shafts are centered and
parallel when the driver is mounted to the pump. Follow the coupling manufacturer
instructions for installation procedures and tolerances.
CAUTION
Never operate the pump without a shaft guard securely installed.
3.2.1
A04 Pump Mounting Guideline
The A04 pump must be mounted in a vertical position only. Secure the pump to the
mounting surface using the holes provided in the pump base. The design of the A04
pump allows for the driveshaft to be rotated in either direction.
3.2.2
I04 Pump Mounting Guideline
The I04 pump must be mounted in a horizontal position only. Secure the pump to the
mounting surface using the holes provided in the pump base. Check motor or engine
rotation direction to ensure that the top of the pump drive shaft rotates towards the
pump fluid end when in operation.
3.3
Suction Piping Recommendations
Poor suction piping practices are a very common source of pump problems. To ensure
proper operation it is very important to follow good design practice in the installation of
the suction system before the pump is operated. A small amount of additional planning
and investment in the piping system usually provides for better pump performance and
longer periods between service requirements. It is difficult to diagnose many pump
problems without the aid of a suction pressure gauge. For this reason, FMC
recommends that a gage always be installed in the suction line directly before it enters
the pump.
The suction line from the fluid source to the pump should be as short and direct as
possible. Use rigid piping, non-collapsible hose or a combination of both as
circumstances require in your installation. The suction pipe size should be at least
equal to or one size larger than the pump inlet. Long piping runs, low suction heads, or
indirect pipe routing may require even greater oversizing of the suction line for proper
operation of the pump. A suction pulsation dampener is recommended to reduce the
effects of acceleration head to help when suction conditions are not optimal. In some
cases it may be necessary to install a booster pump in the suction line of the pump to
obtain sufficient pressure for the pump to operate successfully.