Tjernlund Auto-Draft FSAD & VSAD Series Inducers 8504090 Rev 11/00 - Manual (Page 19)

The Tjernlund Auto-Draft® Venter is designed for continuous use. The motor is equipped with permanently lubricated sealed ball
bearings which do not require oiling.
A vent pipe inspection must be performed annually. The inspection should include checking all vent pipe and connections for block-
age and leaks. A safety interlock test must also be performed.
For gas applications no regular maintenance is required. For oil applications inspect impeller after (3) months and set up a periodic
inspection and cleaning routine as necessary.
CLEANING
Disconnect the power supply when making wiring connections or when working around the fan impeller and motor. Do not
open motor side housing until weight can be adequately supported.
1. Unfasten latches on Auto-Draft® Venter housing. Do not open Venter until weight can be adequately supported. Auto-Draft®
motor side can be propped open by inserting handle in the handle support bracket, (See Diagram G). Make sure the
handle is properly inserted in the support bracket to prevent damage to hinge and housing.
2. If necessary, use scraper and/or brush to clean the impeller and inside venter base.
TROUBLESHOOTING
Problem:
The Venter is not operating.
Solution:
Confirm that Venter housing is closed and latched down. Make sure that proper Tilt Switch is wired into electrical circuit based on
horizontal or vertical termination. See “WIRING” section for proper Tilt Switch wiring.
Confirm that the Venter is properly wired. Check power supply wires in junction box and check circuit breaker.
Problem:
Suspect impeller is rotating backwards on VSAD-Series Venter. VSAD Venter is only able to overcome marginal pressure.
Solution:
As viewed through the Auto-Draft® discharge grille the impeller should rotate counter-clockwise. Follow procedure under “Wiring”
section of these instructions to verify proper rotation of impeller on VSAD-Series Venters.
Problem:
The motor compartment High Limit is tripping.
Solution:
Check to confirm that Cooling Fan is operational by suppling direct voltage to Cooling Fan. Supply 115 VAC to FSAD-8, 10 and
Supply 230 VAC to FSAD-12 and all VSAD-Series. Make sure that Auto-Draft® cooling air inlets are not blocked. Verify flue gas
temperatures are suitable for the Auto-Draft®.
HOW TO OBTAIN SERVICE ASSISTANCE
1. If you have any questions about your Auto-Draft® Venter or if it requires adjustment, repair or routine maintenance, we suggest
that you initially contact your installer, contractor or service agency.
2. If you require technical information contact Tjernlund Products, Inc. at 1-800-255-4208.
When contacting Tjernlund Products, Inc., please have the following information available:
1. Model and Lot # of the Auto-Draft® Venter
2. Name and address of installer and service agency
3. Date of original installation and dates any service work was performed
4. Details of the problem
LIMITED PARTS WARRANTY AND CLAIM PROCEDURE
Tjernlund Products, Inc. offers a two year mechanical and a ten year corrosion (Venter housing and components must be compro-
mised, adversely affecting normal operation due to corrosion) warranty on the Auto-Draft®. This warranty covers defects in material
and workmanship. This warranty does not cover normal maintenance, transportation or installation charges for replacement parts or
any other service calls or repairs. Products that are tampered with, damaged or defective due to malfunctioning appliances or misap-
plication are not covered under this warranty. This warranty DOES NOT cover the complete Auto-Draft® Venter if it is operative,
except for the defective part.
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