Memorandum

City of Lawrence

Utilities Department

TO:	Diane Stoddard – Interim City Manager Casey Toomay – Assistant City Manager
FROM:	Beth Krishtalka – Assistant to Utilities Director
CC:	Mike Lawless – Utilities Deputy Utilities Dave King – Superintendent Sean Sloan – Purchasing Officer
DATE:	November 13, 2015
RE:	ABB Variable Frequency Drive (3) for Utilities Treatment Plants; UT1512

Background

Pump and blower functionality is critical, particularly during high flow events at City water and wastewater treatment plants. Each pump and blower has its own variable frequency drive (VFD) for variable speed control to help reduce operating costs.

Project Description

Staff has determined replacement of three aging VFDs is needed for continued blower and pump reliability. One VFD replacement is for a Kaw River Wastewater Treatment Plant (WWTP) blower; one is for a WWTP raw sewage pump; and one is for a Kaw River Water Treatment Plant low service pump. Staff has negotiated sole source quotes (including startup services, and five-year warranty) from Logic, Inc. for a combined total purchase price of $109,020.20. Logic is the local supplier for the Department’s specified standard VFDs from manufacturer ABB.

Location	VFD	Quantity	Price
WWTP Blower	ABB 400HP ULH Drive	1	$ 54,985.47
WWTP Raw Pump	ABB 150HP Drive	1	$ 28,804.75
Kaw Water Low Service Pump	ABB 100HP Drive	1	$ 25,229.80
		Total	$109,020.02

Project Funding

Purchase will be funded from Utilities cash construction funds.

Action

Authorize the sole-source purchase of three replacement ABB Variable Frequency Drives from Logic, Inc. for the combined total purchase price of $109,020.20 for Utilities Treatment Plants.