Technical Exhibit 2_Examples of maintenance task and frequencies.pdf

1. Maintenance Requirement of Water Cooled Chillers W M Q SA A

Check unit for proper operation. x x x x x

Check oil level; add oil as necessary x x x x x

Check oil temperature. x x x x x

Check dehydrator or purge system; remove water if observed in sight glass x x x x x

Run system control tests. x x x x

Check refrigerant charge/level, add as necessary. x x x x

Check compressor for excessive noise/vibration. x x x x

Check sensor and mechanical safety limits; replace as necessary x x Perform spectrochemical analysis of compressor oil; replace oil as necessary x

Replace oil filters and add oil as necessary x

Inspect cooler and condenser tubes for leaks; clean screens as necessary. x

Inspect utility vessel vent piping and safety relief valve; replace as necessaary x

Inspect/clean the economizer (vane), gas line damper valve and actuator arm x

Run an insulation test on the centrifugal motor. x

Clean area around equipment. x x x x x

Document all maintenance and cleaning procedures x x x x x

Visual inspection of ground shock absorber x x x x

Note; W: Weekly, M: Monthly, Q: Quarterly, SA: Semi-annually, A: Annually

2. Maintenance Requirement of Air-Cooled Chillers W M Q SA A

Check unit for proper operation. x x x x x

Check oil level; add oil as necessary x x x x x

Check oil temperature. x x x x x

Check dehydrator or purge system; remove water if observed in sight glass x x x x x

Run system control tests. x x x x

Check refrigerant charge/level, add as necessary. x x x x

Check compressor for excessive noise/vibration. x x x x

Check sensor and mechanical safety limits; replace as necessary x x Perform spectrochemical analysis of compressor oil; replace oil as necessary x

Replace oil filters and add oil as necessary x

Inspect cooler and condenser tubes for leaks; clean screens as necessary. x

Inspect utility vessel vent piping and safety relief valve; replace as necessaary x

Inspect/clean the economizer (vane), gas line damper valve and actuator arm x

Run an insulation test on the centrifugal motor. x

Clean area around equipment. x x x x x

Document all maintenance and cleaning procedures x x x x x

3. Maintenance Requirement of Cooling Towers W M Q SA A

Check abnormal noise or vibration on fan, motor and V-belt daily

Check with operating or area personnel for deficiencies. x x x x

Check operation of unit for water leaks, noise or vibration. x x x x

Clean and inspect hot water basin. x x x x

Remove access panel. x x

Check electrical wiring and connections; make appropriate adjustments. x x x x

Lubricate all motor and fan bearings. x x x x

Check fan blades or blowers for imbalance and tip clearance. x x x x

Check belt for wear, tension and alignment; adjust as required. x x

Drain and flush cold water sump and clean strainer. x x x x

Clean inside of water tower using water hose; scrape, brush and wipe as required; heavy deposits of scale should be removed with scale removing compound.

x x x x

Refill with water, check make-up water for leakage, adjust float if necessary.

x x

Replace access panel. x x Remove, clean and reinstall conductivity and ph electrodes in chemical water treatment system.

x x

Inspect and clean around cooling tower. x x x x

Fill out maintenance checklist and report deficiencies. x x x x

4. Maintenance Requirement of Variable Air Volum (VAV) Systems W M Q SA A

Check VAV box duct connections for leakage or movement. x Verify hangers and mounting are secure. x

Verify function and accuracy of VAV box zone temperature sensors. x Verify function of flow sensor and corresponding control of box damper of air flow sensor.

x

Clean air flow sensor per manufacturer's recommendations. x Verify function of VAV box controls by technology type and per manfacturere's recoomendation.

x

Check for proper connections to DDC corresponding to damper action. x

Check for proper operation VAV box controls and correct corresponding damper and valve actions.

x

Check seals and alignment of VAV box damper in duct. x

Check damper linkage for tension and position relative to control point. x

Lubricate per manufacturere's recommendation. x

Verify minimum and maximum postions of damager linkage and control are correct.

x

Clean and clean reheat coil. x Check for secure electrical connections and signs of overheating in connectiors or donductors.

x

Perform VAV system returning with building automation system. x Perform inspections and maintenance of other compnents and systems inlcluding to AHU, return fan and VFDs.

x

Document all maintenance activities in logbook and electronic CMMS. x

5. Maintenance Requirement of Air Handling Units W M Q SA A

Check with operating or area personnel for deficiencies. x x x

Check controls and unit for proper operation x x x

Check for unusual noise or vibration x x x Clean coils, evaporator drain pan, blower, motor and condensate drain piping, as required x

Lubricate shaft and motor bearings. x x x

Check belts for wear, proper tension, and alignment; adjust as necessary x x x

Inspect exterior piping and valves for leaks; tighten connections as required x x x Check operation and clean dampers, louvers and shutters; lubricate all pivot points and linkages. x

Replace air filters. x x x

Clean area around equipment. x x x

Fill out maintenance checklist and report deficiencies x x x

6. Maintenance Requirement of CRAC W M Q SA A

Filters

Check for restricted airflow and filter, and wipe section clean X

Fan Section

Check impellers free of debris to ensure bearings in good condition X

Humidifier

Check canister for mineral deposits and condition of electrodes X

Check all hoses and fittings tight, and water make-up valve for leaks X

Drain Lines

Check for obstructions and sediment build up X

Check for external damage, corrosion and leaks X

Compressor Section

Check signs of oil leaks and vibration isolation X

Refrigeration Cycle

Check suction pressure, head pressure and superheat X

Clean evaporator coil, and check insulation intact X

Water or Glyco-Cooled Condensing

Check water valve adjustment, water flow and water leaks X

Electric Panel

Check electrical connections and operational sequence X

Flood Back Head Pressure Control (if applicable)

Check refrigerant level X

Air-Cooled Condensing Unit (if applicable)

1) Condenser coil clean X

2) Motor mount tight X

3) Bearings in good condition X

4) Refrigerant lines properly supported X

Air-Cooled Condensing Unit (if applicable)

1) Glycol leaks X

2) Pump operation X

3) Glycol solution X

4) PH Level X

7. Maintenance Requirement of Power Distribution Units (PDUs) W M Q SA A

Exterior Inspection

1. Confim that the exterior of unit is undamaged. x x x x

2. Confirm that service and ventilation clearances are adeqate. x x x x x

Interior Inspection

1. Inspect all wire and conductor insulation for damage. x x x x

2. Check all breaker connections for tightness. Retorque if necessary. x x x x

3. Check trip setting of adjustable breakers. x x x x

4. Check all terminal block connections for tightness. Retorque if necessary. x x x x

5. Check and Clean any foreign objects from the components or the interior are of the unit. x x x x

6. Check that the intake and exhaust air screens are clean and free of obstructions. x x x x

7. Check and clean ventilation openings and grilles x x x x x

8. Close the accent panel, leaving access to circuit breakers for the following startup procedure. x

Startup, if necessary

1. Make certain that all circuit breakers are in the Off position and that power to the unit is locked out. x

2. Turn on the building power to the unit. Check the phase rotation at the pane board main breaker or panel boart input lugs if no panel board main breaker is supplied. Phase roation should be A, B, C, as indicated.

x

3. Check and record the input voltages at the panel board main breaker or panel board input lugs if no panel board main breaker is supplied; x

4. Turn Off and lock out the building power to the unit. x

5. Replace the junction box cover. x

6. Verify proper input power connections to unit, including equipment grounding conductor. x

7. Turn on the building input power to the unit. x

8. Check the phase rotation at the panel board main breaker. Phase rotation should be A, B, C, left to the right.

x

9. Check and record the input voltage at the panel board main breaker.

Measured voltages should correspond to the unit's nameplate input voltage.

x

10. Turn on the panel board main breaker. x

Monitoring System of LCD Panel display

Ensure that the LCD is On. The Monitor Panel displays output and neutral current for the panel board (load must be applied to get an accurate reading.)

x x x x

8. Maintenance Requirement of Boilers W M Q SA A

Check for proper operational response of burner to thermostat controls. x x x

Inspect gas and water lines, valves, connections for leaks or damage; repair as necessary.

x x x x

Check feedwater system and feedwater makeup control and pump. x x x x

Check and lubricate burner, blowers and motors as required. x x x

Check operation and condition of safety pressure relief valve. x x x x Check combustion controls, combustion blower and damper modulation control.

x

Check all indicator lamps and water/steam pressure gauges. x x x x Check electrical panels and wiring to burner, blowers and other components.

x x x

Clean blower air-intake dampers, if required. x x x

Check condition of flue pipe, damper and exhaust stack. x x x x

Check boiler operation through complete cycle, up to 30 minutes. x x x

Check water column sight glass and water level system; clean or replace sight glass, if required.

x x x x

Clean firebox (sweep and vacuum). x x x Inspect and clean burner and ignition assembly where applicable. x x x Clean area around boiler. x x x x

Fill out maintenance checklist and report deficiencies. x x x x

9. Maintenance Requirements of Various Pumps W M Q SA A Check exterior for leaks x x x x Check for excessive vibration or unusual noises x x x x Check for oil discolouration or foaming x x x Check the temperature of bearings x x x Inspect gasket for oil leaks x x x Inspect self flush pumps x x x Check heat tracing x x x Clean bearing covers x x x Inspect water cooling x x x Top up oil – if applicable x x x Clean oil bulbs x x x Inspect and replace guards x x x Clean dirt and debris from bearings x x x Grease the motor bearings x x x Inspect hydraulic governors oil levels x x x Check for leaks x x x Clean external debris from pump x x x Inspect pump and motor for excessive vibration damage x x x Grease bearings x x x Change the oil x x x Check suction and discharge x x x Check head pressure x x x Check hold down bolts for tightness x x x Inspect shaft pump alignment x x x Pump flow meter rate x x Motor amps x x Head pressure and pump discharge pressure x x Check exterior for corrosion, cracks, debris and scale. x x Clean chase threads x x Check for blockages in lubrication passages x x Grease lubricated bearings x x Replace worn housings x x Check stuffing box cover x x Analyse power consumption x x Grease motor bearings x x Check oil level x x Check flow rate x x Inspect casing for corrosion – replace if excessive wear x x Inspect gasket for deformities and mechanical seals x x Check impeller for erosion – replace is excessive wear or bent vanes x x Check shaft for excessive wear and corrosion, and shaft runout for water x x Inspect seal chamber for pitting x x Inspect for scoring on the chamber face x x

10. Maintenance Requirement of Backflow Preventers W M Q SA A

Remove dust on backflow preventor x x x x

Visally check leaking part and install portable drain as required x x x x

Test Backflow Prevention Assemblies with manufacturer's guide x

Check pressure gauges x x

Check for corrosion & perform corrosion control x x x

Tighten backflow flanges x x x

Check unit for proper operation after maintenace x

Filter Maintenance Schedule Building Number __________

Equipment Name

Location Pre-Filter Size Quantity Filter Size Quantity Replacement

Date Notes

Maintenance and Lubrication Schedule Building Number __________

Equipment Name

Location Function Control

Location Type of

Lubricant Rate of

Lubrication Lubrication

Date Notes