Memorandum

City of Lawrence

Utilities Department

TO:	David L. Corliss – City Manager Cynthia Wagner - Assistant City Manager Diane Stoddard - Assistant City Manager
FROM:	Philip Ciesielski – Asst. Director of Utilities
CC:	Dave Wagner – Director of Utilities Mike Lawless – Deputy Director of Utilities Beth Frailey Krishtalka – Assistant to Director Mark Hegeman – Utilities Operations Superintendent Dave King – Utilities Maintenance Superintendent
Date:	February 19, 2014
RE:	Authorize the Purchase of a Motor and Variable Frequency Drive for Clinton Raw Water Pump 4, and set a bid date of March 25, 2014 for Bid Number B1413, Project UT1407 - Installation of a Motor and Variable Frequency Drive for Clinton Raw Water Pump 4

Please include the following item on the City Commission Agenda for consideration at the February 25, 2014 meeting:

Authorize the execution of a purchase agreement with Logic Inc. in the amount of $93,807.19 plus actual shipping costs for the purchase of an ABB Variable Frequency Drive (VFD) and Baldor Motor with a 5 year warranty per Quote 206308 for Clinton Raw Water Pump 4.

Set a Bid Date of March 25, 2014 for Bid B1413 Project UT1407 for the installation of a motor and VFD for Clinton Raw Water Pump 4.

Project Description:

The Clinton Water Treatment Plant receives raw water from the Clinton Reservoir via pumping at the Raw Water Pump Station located adjacent to the dam outlet structure (see the attached map). The pump station has 4 raw water pumping units; 2 each rated at 5 million gallons per day (MGD) and 2 each rated at 10 MGD.

Pump 4 is a 300hp, 10 MGD pump equipped with a VFD for variable speed control installed as part of the 2001 Clinton WTP Expansion. This pump, motor and VFD combination has had issues with motor damage occurring when run at full speed. Over the last several years the pump has been run at a reduced speed, and flow, to overcome these issues. As water demand has increased, the Department needs to be able to run the unit at full speed, and flow, to reliably meet peak demands.

In an attempt to correct the ongoing issues and keep the unit in service on a limited basis, over the last year the Department expended $14,560 on repairs to the existing VFD and $25,123 on the motor. These repairs currently have the pump serviceable, but only at reduced speeds and flows.

Project Status:

Staff investigated the performance issues and determined the replacement of the motor and VFD is required to bring the pump back to full service. In an effort to eliminate the question of responsibility for the performance of the system, staff recommends the new motor and VFD be provided by a single supplier. Staff negotiated the referenced quote for both the motor and VFD, startup services, and a 5 year warranty with Logic Inc.. Logic Inc. is the local supplier for the department’s specified standard ABB VFDs. Logic Inc. will be providing and warranting a Baldor motor as part of the package.

Staff recommends executing a separate purchase agreement for the equipment and bid for the installation to compress the overall project schedule and have the new equipment installed and ready for service ahead of mid-summer peak summer demands. The delivery for the motor and VFD is 10 weeks after order approval. It is anticipated removal of the existing equipment, and installation and startup of the new motor and VFD will take two weeks.

Project Funding:

The project is funded from the 2014 Operations and Maintenance budget.

Action Request:

Set a Bid Date of March 25, 2014 for Bid B1413 Project UT1407 for the installation of a motor and VFD for Clinton Raw Water Pump 4.

Thank you for your assistance. Please advise if you have any questions.