Rooftop Unit.doc
DOC document 42 KB Posted
- Solicitation number
- BPM059074
- Issued by
- Queen Anne's County, Maryland
About this file
This is a Rooftop Unit Checklist document supporting an HVAC repair and preventive maintenance contract for the State of Maryland's SHA Centreville facility on the Eastern Shore. The checklist establishes comprehensive maintenance standards for rooftop HVAC units, divided into quarterly and seasonal changeover service requirements. Quarterly maintenance tasks include air filter replacement, fan belt inspection, refrigerant checks, access panel verification, static pressure control sensor operation, ductwork inspection, drain pan evaluation, condensate line inspection, vibration and noise assessment, moisture eliminator and bird screen inspection, flexible duct connection review, and coil inspection and cleaning. Seasonal changeover procedures encompass verification of operation sequences, variable frequency drive functionality, burner tuning with electrode and nozzle inspection, fuel train evaluation, combustion measurements including draft, carbon dioxide, oxygen levels, stack temperature, smoke density, and carbon monoxide readings, safety control verification, gauge replacement, supply air temperature measurement, strainer cleaning, regulator and valve adjustment, compressor motor ground resistance measurement, interlock control testing, actuator operation verification, flue inspection and cleaning, coil washing, secondary heat exchanger cleaning, electric connection inspection and tightening, bearing and motor lubrication, motor amp draw recording, damper lubrication and adjustment, motor intake screen cleaning, fan wheel inspection, and structural equipment support assessment for corrosion and damage.
The document does not specify pricing terms, contract duration, renewal options, set-asides, incumbent contractor information, funding sources, or other financial details. The checklist serves as a technical specification document outlining the scope of work and performance standards required for HVAC maintenance services under the one-year repair contract for SHA Centreville, with no information provided regarding bid response dates, award dates, or site visit requirements.
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Text version
ROOFTOP UNIT CHECKLIST
Type of Service:
Date Of Service:
Unit Being Serviced:
Facility:
Service Technician:
QUARTERLY
FORMCHECKBOX
Replace Air Filters.
FORMCHECKBOX
Check Fan Belts for tension, alignment and wear. Adjust/Replace as needed.
FORMCHECKBOX
Check Damper Linkage/Movement. Adjust and Lubricate as needed.
FORMCHECKBOX
Check Refrigerant, both site glass and refrigerant charge. Adjust as needed. Check for leaks and repair if undercharged.
FORMCHECKBOX
Check access panels for tight fit. Replace screws, handles etc. as needed. Oil hinges if applicable.
FORMCHECKBOX
Verify operation of rooftop unit static pressure control sensor.
FORMCHECKBOX
Inspect Ductwork, insulation and covering on roof for air and water leakage. Repair as needed.
FORMCHECKBOX
Check Drain Pans for proper drainage, leakage, dirt and mold. Clean/Repair as needed.
FORMCHECKBOX
Check condensate lines for clog or physical damage. Repair or replace as needed.
FORMCHECKBOX
Inspect for vibration and unusual noises.
FORMCHECKBOX
Check moisture eliminators, bird screens and outside air hoods for damage, blockage and cleanliness. Repair/clean as needed.
FORMCHECKBOX
Inspect flexible duct connections for damage and leakage. Repair/Replace as needed.
FORMCHECKBOX
Inspect coils for damage, blockage, dirt etc. Clean as needed. Comb/Straighten fins.
SEASONAL CHANGEOVER
FORMCHECKBOX
Verify Sequence of operation.
FORMCHECKBOX
Verify Variable Frequency Drive operation.
FORMCHECKBOX
Tune burners. Check/Adjust/Replace electrodes, nozzles, seals, gaskets etc. Check pump pressure and adjust to manufacturer’s specs, Clean burner air tube, fan housing and blower wheel. Seal any air leaks into combustion chamber.
FORMCHECKBOX
Check fuel train. Repair/Replace as required.
FORMCHECKBOX
Measure draft, CO2 or O2, net stack temperature, smoke density and carbon monoxide. Note final readings, after adjustments, in logs. Check for restrictions in flues/chimneys. Adjust barometric dampers, flue/chimney caps and fans/damper for combustion air sources. Check for pulsations and rumbles. Clean bird and insect screens.
FORMCHECKBOX
Verify functioning of all safety and auxiliary controls.
FORMCHECKBOX
Check gages. Replace as needed. Note all vacuum and pressure readings in logs. Measure and note supply air temperatures during normal operation.
ROOFTOP UNIT CHECKLIST
FORMCHECKBOX
Clean strainers. Adjust regulators and pressure reducing valves. Operate shutoff valves.
FORMCHECKBOX
Measure ground resistance of compressor motor windings.
FORMCHECKBOX
Test and verify interlock controls.
FORMCHECKBOX
Verify proper operation of all actuators.
FORMCHECKBOX
Inspect flues for leaks and cracks. Drain/Clean flues of condensation and dirt. Check the barometric damper.
FORMCHECKBOX
wash coils with a coil cleaner and flush.
FORMCHECKBOX
Clean secondary heat exchanger and combustion area. Clean transformer bushings, springs and cad cell surface.
FORMCHECKBOX
Check safety and auxiliary controls.
FORMCHECKBOX
Inspect and tighten electric connections. Clean contacts and verify proper operation.
FORMCHECKBOX
Lubricate bearings, fans and motors.
FORMCHECKBOX
Take amp draw of motors and record amp readings in the log.
FORMCHECKBOX
Lubricate dampers. Adjust damper linkage.
FORMCHECKBOX
Clean intake screen on motors.
FORMCHECKBOX
Inspect fan wheel/blades for free rotation, cracks and alignment.
FORMCHECKBOX
Inspect all structural equipment supports for corrosion and damage.
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