20 Engineered Systems August 2010

BY AMANDA MCKEW

Date: August 16, 2010Building: HospitalFloor: RoofYear installed: 1996Inspected by: AEMSerial number: 111010293

System type: Draw-throughManufacturer: X-Y-ZModel: DT-111Size: 500 tonsHp: 40Volts: 460/3/60

EXISTING CONDITIONS AND DEFICIENCIES

END OF EQUIPMENT USEFUL SERVICE LIFE (USL)

STANDARDS AND CODE ISSUES

ENERGY CONSERVATION

NOTES

DRAW-THROUGH COOLING TOWER ASSESSMENT: CT-3A

�TheFacilityFiles

Y N NA Y N NAHVAC ❑ ❑ ❑ Is there access around equipment?

❑ ❑ ❑ Exterior enclosure in good condition? ❑ ❑ ❑ Is unit close to roof edge requiring railings?

❑ ❑ ❑ Is condenser air flow restricted and/or short-circuiting? ❑ ❑ ❑ Is walking surface safe (flat roof, non-slip material, etc.)?

❑ ❑ ❑ Are there sufficient gauges? ❑ ❑ ❑ Is there ground-fault protection?

❑ ❑ ❑ Are there sufficient thermometers? ❑ ❑ ❑ Overall, unit is clean, no vibration or noise?

❑ ❑ ❑ Are there signs of water leaks? ❑ ❑ ❑ All ATC devices appear in good condition?

❑ ❑ ❑ Is there condenser water overflow in distribution sump? ELECTRICAL

❑ ❑ ❑ Is there non-toxic glycol solution in system? ❑ ❑ ❑ Is motor a high-efficiency model?

❑ ❑ ❑ Is unit support (steel frame, etc.) in good condition? ❑ ❑ ❑ Is there a localized disconnect?

❑ ❑ ❑ Are valves around unit in good condition? ❑ ❑ ❑ Does the unit have VSD fans?

❑ ❑ ❑ Are there valve tags and a valve chart? PLUMBING

❑ ❑ ❑ Are drain lines piped directly to drains? ❑ ❑ ❑ Are there localized drains to serve the unit?

❑ ❑ ❑ Is piping insulation in good condition? ❑ ❑ ❑ Is water makeup missing backflow preventer?

❑ ❑ ❑ Are condenser fans in good condition? MAINTENANCE

❑ ❑ ❑ Is there a vibration switch on unit? ❑ ❑ ❑ System flow diagram mounted by unit?

❑ ❑ ❑ Is tower sump clean and in good condition? ❑ ❑ ❑ O&M manual secured at unit or on file?

❑ ❑ ❑ Is there an OSHA ladder to top of unit? ❑ ❑ ❑ Work order last completed?

❑ ❑ ❑ Is there any kind of filter system adjacent to unit (sand filter, etc.)? ❑ ❑ ❑ Is there a service contract for this unit?

❑ ❑ ❑ Are there seismic supports/hangers? ❑ ❑ ❑ Date of last completed predictive maintenance (vibration analysis, etc.)?

Y N NA Y N NA❑ ❑ ❑ Does unit meet current codes? ❑ ❑ ❑ Does unit/system meet current energy code?

❑ ❑ ❑ Is emergency power a requirement? ❑ ❑ ❑

Y N NA Y N NA❑ ❑ ❑ End of USL, replace with higher efficient unit/fill? ❑ ❑ ❑ Is there a chemical treatment service contract?

❑ ❑ ❑ Can unit/system be retrofitted to meet latest energy code? ❑ ❑ ❑ Is there a water meter on makeup line?

❑ ❑ ❑ Consider waterside economizer?

1. Can unit be readily removed/replaced? 3. Are unit controls interactive with building ATC computer?

2. Does unit operate 24/7 year-round or seasonal? 4. Are there energy meters (fuel, Btuh, etc.)?

Year Year14 Motor is x years old 20 USL benchmark is _

14 Controls are x years old 16 USL benchmark is _

14 Condenser fans are x years old 20 USL benchmark is _

14 Unit is x years old 20 USL benchmark is _

McKew is a senior project engineer with InterPro Solutions. Reach her at amckew@interprosoft.com.

CARBON FOOTPRINTCarbon Neutral

❑❑

❑❑❑

✔

✔

✔

✔✔✔✔

✔✔

✔

✔✔✔✔

✔

✔

✔

✔

✔

✔

✔

✔✔

✔

✔

✔✔

✔✔

✔✔

✔

✔

✔

✔

✔✔

✔

✔

✔

✔

✔✔