ASHRAE+62.1-2022+(1) - Page 034
Extracted Content
8.1.2 Building Alterations or Change of Use. When buildings are altered or when changes in building use, occupant category, significant change in occupant density, or other changes inconsistent with system design assumptions are made, the ventilation system design, operation, and maintenance shall be reevaluated and the O&M manual updated as necessary.
8.2 O&M Manual. An O&M manual, either written or electronic, shall be developed and maintained on site or in a centrally accessible location for the working life of the applicable ventilation system equipment or components. This manual shall be updated as necessary. The manual shall include the O&M procedures, ventilation system operating schedules and any changes made thereto, final design drawings, maintenance schedules based on manufacturer’s instructions, and the maintenance requirements and frequencies provided in Table 8-1.
8.3 Ventilation System Operation. Mechanical and natural ventilation systems shall be operated in a manner consistent with the O&M manual. Systems shall be operated such that spaces are ventilated in accordance with Section 6 during periods of expected occupancy.
8.4 Ventilation System Maintenance. The building ventilation system components shall be maintained in accordance with the O&M manual.
Table 8-1 Minimum Maintenance Activity and Frequency for Ventilation System Equipment and Associated Components
Inspection/Maintenance Task Frequency [ a]
a. Investigate system for water intrusion or accumulation. Rectify as necessary. As necessary
b. Verify that the space provided for routine maintenance and inspection of open cooling tower water systems, closed
cooling tower water systems, and evaporative condensers is unobstructed.
c. Open cooling tower water systems, closed cooling tower water systems, and evaporative condensers shall be treated
to limit the growth of microbiological contaminants, including legionella sp.
Monthly
Monthly
d. Verify that the space provided for routine maintenance and inspection of equipment and components is unobstructed. Quarterly
e. Check pressure drop and scheduled replacement date of filters and air-cleaning devices. Clean or replace as necessary
to ensure proper operation.
Quarterly
f. Check ultraviolet lamp. Clean or replace as needed to ensure proper operation. Quarterly
g. Visually inspect dehumidification and humidification devices. Clean and maintain to limit fouling and microbial
growth. Measure relative humidity and adjust system controls as necessary.
h. Maintain floor drains and trap primer located in air plenums or rooms that serve as air plenums to prevent transport of
contaminants from the floor drain to the plenum.
i. Check ventilation and IAQ related control systems and devices for proper operation. Clean, lubricate, repair, adjust,
or replace as needed to ensure proper operation.
j. Check P-traps in floor drains located in plenums or rooms that serve as air plenums. Prime as needed to ensure proper
operation.
k. Check fan belt tension. Check for belt wear and replace if necessary to ensure proper operation. Check sheaves for
evidence of improper alignment or evidence of wear and correct as needed.
Quarterly
Semiannually
Semiannually
Semiannually
Semiannually
l. Check variable-frequency drive for proper operation. Correct as needed. Semiannually
m. Check for proper operation of cooling or heating coil for damage or evidence of leaks. Clean, restore, or replace as
required.
n. Visually inspect outdoor air intake louvers, bird screens, mist eliminators, and adjacent areas for cleanliness and
integrity; clean as needed; remove all visible debris or visible biological material observed and repair physical damage to louvers, screens, or mist eliminators if such damage impairs the item from providing the required outdoor air entry.
o. Visually inspect natural ventilation openings and adjacent areas for cleanliness and integrity; clean as needed.
Remove all visible debris or visible biological material observed and repair physical damage to louvers, and screens if such damage impairs the item from providing the required outdoor air entry. Manual and/or automatic opening apparatus shall be physically tested for proper operation and repaired or replaced as necessary.
a. Minimum frequencies may be increased or decreased if indicated in the O&M manual.
Semiannually
Semiannually
Semiannually
32 ANSI/ASHRAE Standard 62.1-2022