Attachment+A+Chiller+Services.docx

ATTACHMENT A

COMPREHENSIVE PREVENTATIVE MAINTENANCE SERVICES

All costs for these inclusive services listed below must be included in the unit pricing.

BID ITEMS #1 and #2 ANNUAL ABSORPTION CHILLER EQUIPMENT SERVICE FOR SPRING START-UP (POWERHOUSE BUILDING)

A. Start machine, check purge rate, unit operation, and control calibration.

B. Check chilled water system for air; when required, assist agency personnel in the removal of air.

C. Check tower for cleanliness, water flow, scale, and appropriate water treatment.

D. Provide auxiliary vacuum pump, when required, to remove excess amounts of air.

E. Check purge unit operation and oil level.

F. Check pump motor current, voltage, and record readings.

G. Clean magnetic strainer.

H. Check machine vacuum.

I. Review operating procedures, logging, etc. with STATE personnel.

J. Take complete operating log (pressures, temperatures, levels, voltage, amperes, etc.).

K. Make any required adjustment to levels, pressures, or controls.

L. Check cooling tower for condition, operation, and needed maintenance.

M. Check chilled and condenser water pumps.

N. Check operation of purge system.

O. Check oil in purge vacuum pumps.

P. Check operation of steam system.

Q. Check operation of all safety controls located outside of machine control panel.

R. Check and review STATE’s operating logs with STATE representative to discuss operation of machine.

S. Clean absorption pump strainer.

T. Report chiller, cooling tower of system problems to STATE Plant Services Director or its designee.

U. Collect samples of refrigerant and lithium bromide for laboratory analysis.

V. Furnish and install inhibitors per laboratory recommendations.

W. Check condition of motor starter.

X. Make necessary adjustments to machine to reach outgoing water temperature of approximately 45°F.

Y. Tighten terminals in electrical panel.

BID ITEMS #3 and #4 ANNUAL PREVENTATIVE MAINTENANCE AND ANALYSIS SERVICES, INCLUDING MID-YEAR SAMPLE, ON ABSORPTION CHILLER EQUIPMENT (POWERHOUSE BUILDING)

A. Take complete operating log (pressures, temperatures, levels, voltage, amperes, etc.).

B. Make any required adjustment to levels, pressures, or controls.

C. Check cooling tower for condition, operation, and needed maintenance.

D. Check chilled and condenser water pumps.

E. Check operation of purge system.

F. Check oil in purge vacuum pumps.

G. Check operation of steam system.

H. Check operation of all safety controls located outside of machine control panel.

I. Check and review STATE’s operating logs with STATE representative to discuss operation of machine.

J. Clean absorption pump strainer.

K. Report chiller, cooling tower of system problems to STATE Plant Services Director or its designee.

L. Collect samples of refrigerant and lithium bromide for laboratory analysis, including for the mid-year sample.

M. Furnish and install inhibitors per laboratory recommendations.

N. Check condition of motor starter.

O. Make necessary adjustments to machine to reach outgoing water temperature of approximately 45°F.

P. Tighten terminals in electrical panel.

Q. Review laboratory report for potential leakage problems or high ammonia problems and adjust accordingly.

R. Check for pneumatic air leaks inside pneumatic control panel.

S. Remove purge pump, disassemble, clean, and test efficiency.

T. Following reassembly of purge pump, charge oil to above glass.

U. Lubricate diaphragm valves, as required.

V. Check operation of economizer valve, steam valve, and Positive Concentration Limit (P.C.L.) valve.

W. Check machine vacuum and record on annual maintenance log form.

X. Inspect tubes in both the absorber and condenser for fouling or scale.

Y. Review purge records to determine leak rate of chiller.

Z. Check calibrations of safety controls.

AA. Provide STATE with copy of log form and review conditions noted.

BID ITEMS #5 and #6 ANNUAL ROOFTOP SERVICE OF TWO AIR CONDITIONER UNITS FOR SPRING START-UP (CENTRAL RECEIVING BUILDING)

A. Start machine and check unit operation, refrigerant charge, and control calibration.

B. Checking air handling system for proper air flow and proper damper operation, to include checking conditions of belts, bearings, coils, and fan wheel; check condenser fans for cleanliness and check all condenser fan motors.

C. Check lubricant level, temperature, and pressure.

D. Check crankcase heater operation.

E. Check starter operation.

F. Check motor voltage, voltage balance, and current.

G. Review operating procedures, logging, etc. with STATE Plant Service Director or its designee.

H. Check refrigerant charge.

I. Take complete operating log (pressures, temperatures, levels, voltage, ampere, etc.) making any required adjustments to operating or safety controls.

J. Check crankcase heater operation; if air cooled, check condenser for cleanliness and check fan motor.

K. Forward sample of lube oil to laboratory for analysis.

BID ITEMS #7 and #8 ANNUAL PREVENTATIVE MAINTENANCE AND ANALYSIS SERVICES ON TWO ROOFTOP AIR CONDITION UNITS (CENTRAL RECEIVING BUILDING)

A. Take complete operating log (pressures, temperatures, levels, voltage, ampere, etc.) making any required adjustments to operating or safety controls.

B. Check crankcase heater operation; if air cooled, check condenser for cleanliness and check fan motor.

C. Forward sample of lube oil to laboratory for analysis.