ASHRAE+62.1-2022+(1) - Page 035
Extracted Content
Table 8-1 Minimum Maintenance Activity and Frequency for Ventilation System Equipment and Associated Components (Continued)
Inspection/Maintenance Task Frequency [ a]
p. Verify the operation of the outdoor air ventilation system and any dynamic minimum outdoor air controls. Annually
q. Check air filter fit and housing seal integrity. Correct as needed. Annually
r. Check control box for dirt, debris, and/or loose terminations. Clean and tighten as needed. Annually
s. Check motor contactor for pitting or other signs of damage. Repair or replace as needed. Annually
t. Check fan blades and fan housing. Clean, repair, or replace as needed to ensure proper operation. Annually
u. Check integrity of all panels on equipment. Replace fasteners as needed to ensure proper integrity and fit/finish of
equipment.
Annually
v. Assess field serviceable bearings. Lubricate if necessary. Annually
w. Check drain pans, drain lines, and coils for biological growth. Check adjacent areas for evidence of unintended
wetting. Repair and clean as needed.
Annually
x. Check for evidence of buildup or fouling on heat exchange surfaces. Restore as needed to ensure proper operation. Annually
y. Inspect unit for evidence of moisture carryover from cooling coils beyond the drain pan. Make corrections or repairs
as necessary.
Annually
z. Check for proper damper operation. Clean, lubricate, repair, replace, or adjust as needed to ensure proper operation. Annually
aa.Visually inspect areas of moisture accumulation for biological growth. If present, clean or disinfect as needed. Annually
ab.Check condensate pump. Clean or replace as needed. Annually
ac.Visually inspect exposed ductwork and external piping for insulation and vapor barrier for integrity. Correct as
needed.
ad.Verify the accuracy of permanently mounted sensors whose primary function is outdoor air delivery monitoring,
outdoor air delivery verification, or dynamic minimum outdoor air control, such as flow stations at an air handler and those used for demand controlled ventilation, including CO2 sensors. A sensor failing to meet the accuracy specified in the O&M manual shall be recalibrated or replaced. Performance verification shall include output comparison to a measurement reference standard consistent with those specified for similar devices in ASHRAE Standard 41.2 or ASHRAE Standard 111.
ae.Verify the total quantity of outdoor air delivered by air handlers set to minimum outdoor air mode. If measured
minimum airflow rates are less than the design minimum rate documented in the O&M manual, ± a 10% balancing tolerance, (1) confirm the measured rate does not conform with the provisions of this standard and (2) adjust or modify the air-handler components to correct the airflow deficiency. Ventilation systems shall be balanced in accordance with ASHRAE Standard 111 or its equivalent, at least to the extent necessary to verify conformance with the total outdoor airflow and space supply airflow requirements of this standard. Exception: Units under 2000 cfm (1000 L/s) of supply air are exempt from this requirement.
a. Minimum frequencies may be increased or decreased if indicated in the O&M manual.
Annually
5 years
5 years
ANSI/ASHRAE Standard 62.1-2022 33