Corken | IDEX Corporation | Coro-Flo Pumps

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Coro-Flo® Pumps—Troubleshooting Guide

Pump Will Not Build Pressure

Possible Causes

What To Do

Poor suction conditions

Check the storage tank excess flow valve - Clean filter screen. The suction pipe might be too small or restricted. Remove restrictions and/or increase pipe size.

Bypass valve set too low

Set valve for higher pressure. See valve instruction manual.

Too much clearance on the impeller

Impeller should be re-shimmed. Do a performance test on the pump. See performance curves for reference. See the preventative maintenance program in the instruction manual.

Corken, Inc.
A Unit of IDEX Corporation
3805 N.W. 36th St., Oklahoma City, OK 73112 U.S.A.
(405) 946-5576 FAX (405) 948-7343