EFCO 875X Wall Vent - Manual (Page 31)

Series 875 Maintenance
EFCO CORPORATION 2014 Page 31
Hinge Linkage:
Hinge linkages are factory installed and adjusted. Check annually for undue wear.
Clean track of any debris and apply a light machine oil to the track and pivot points. Adjust friction
shoe as required for desired vent operation.
Multi-point Locking:
Lock points are factory installed and adjusted.
There may be up to four locking points on any one side. Check annually for undue wear. Lubricate
with a light machine oil as needed for smooth operation.
Keepers:
Keepers are factory installed and adjusted.
To adjust compression on the weather seals loosen fastener on top of the keeper and slide
tongue in or out and retighten screw. Care must be taken to assure no loss of engagement with
the mating ventilator.
Fasteners:
Check annually for undue loosening and hand tighten when needed.
Weathering:
Check annually for undue damage or wear, change if required.
Minimizing Condensation
Note: Please reference EFCO's "Understanding Condensation" brochure which can be obtained through your EFCO representative.
Condensation will form on any surface when unfavorable conditions (interior temperature and relative humidity and exterior
temperature) are present. When the formation of excessive condensation is a concern, it is highly recommended that a design
professional is utilized to perform an analysis of the shop drawings to recommend the best possible installation methods.
Please contact your EFCO representative for information on EFCO's Thermal Analysis Services.
Many current installation practices lead to an increase in the possibility of the formation of condensation. Though not all inclusive,
the list of examples below illustrates conditions under which condensation is likely to occur:
1. Bridging system thermal break with non-thermally broken metal flashing or lintels that are exposed to the exterior
2. System exposure to cold air cavities
3. Interior relative humidity levels not maintained at recommended levels, see EFCO’s “Understanding Condensation”
Brochure
4. Inadequate separation between system and surrounding condition at perimeter
5. Product combinations during the shop drawing stage that result in bridging thermal breaks
of one or all products involved.