HomeMy WebLinkAboutAgenda Report - August 3, 2005 E-04AGENDA ITEM E'~4
CITY OF LODI
COUNCIL COMMUNICATION
TM
AGENDA TITLE: Report on Emergency Air Conditioning Equipment Replacement at
Municipal Service Center Public Works Office
MEETING DATE: August 3, 2005
PREPARED BY: Public Works Director
RECOMMENDED ACTION: None required. Information only.
BACKGROUND INFORMATION: The compressor for the HVAC rooftop package unit that services
the MSC Public Works office failed during the recent heat spell. The
failure was diagnosed as burnedleroded compressor valves due to
wear. The valve failure brought the unit's cooling performance to
near zero and is consistent with the unit's declining performance for several seasons. The unit was
original equipment to the building and manufactured in 1978.
Alternatives consisted of compressor replacement or a new rooftop package unit. Compressor
replacement is less costly, but it risks damage to the new compressor by system contamination from the
worn compressor components. Additionally, the remaining components, e.g. coils and contactors, are
worn/aged and operate at reduced efficiency. Although an initially more costly option at installation, a
new rooftop package unit operates more efficiently in terms of power consumption and effective cooling
for the building's occupants. Additionally, the new unit alternative provides a warranty and reduced
maintenance costs. Given the age of the entire package unit and the risk associated with compressor
replacement, Facilities Services chose to install a new rooftop package unit.
Facilities Services received two quotes for the work:
Chess Air: $12,800
Henderson Bros.: $5,150
Henderson Bros. was instructed to proceed via purchase order on an emergency basis on July 15, 2005.
FISCAL IMPACT: Not applicable.
FUNDING AVAILABLE: Facilities Services operating budget: $3,862.50
Public Benefits fund: $1,287.50
6irfies R. Krueger, Finance Director
i
Richard C. Prima, Jr.
Public Works Director
Prepared by Mark Zollo, Facilities Supervisor
RCP/MZ
cc: Dennis Callahan, Fleet and Facilities Manager
APPROVED:
Blair KingUXy Manager
J:ICOUNCIL105\EmergencyHVACRepair.doc 712712005