Tjernlund 950-8300 User Manual

(950-8300) 230 VAC COOLING FAN REPLACEMENT INSTRUCTIONS

FOR AUTO-DRAFT® INDUCERS WITH 230 VAC COOLING FANS

Remove any appliance calls for heat and disconnect power to Auto-Draft® Inducer and appliances before servicing.

1. Remove (2) screws from each Auto-Draft exterior housing side (12 total), (See Diagram A).

2. Remove Cooling Fan motor leads and (2) Screws from Auto-Draft motor cowling side
(12 total), (See Diagram B).

4. Remove (2) nuts securing defective Cooling Fan to motor cowling, (See Diagram C).
IMPORTANT: Verify defective Cooling Fan motor you are replacing is 230 VAC.

5. IMPORTANT: Make sure air flow arrow is directed to blow air down into motor cowling,
(See Diagram B). Reinstall new 230 VAC Cooling Fan using (2) 8-32 x 1/2” studs and
tighten (2) nuts, (See Diagram C).

6. Follow Steps 2 & 1 in reverse order for reassembly. Reestablish power to Inducer and
appliances. Run Inducer through a couple of heating cycles to verify proper operation.

Rev. 10/06 Copyright © 2006, Tjernlund Products, Inc. All rights reserved. P/N 8504134

TJERNLUND PRODUCTS, INC.

1601 Ninth Street • White Bear Lake, MN 55110-6794
PHONE [phone] • [phone] • FAX [phone]
Visit our web site • www.tjernlund.com

DIAGRAM A

DIAGRAM B

DIAGRAM C

Remove (2)
screws from
each Auto-Draft
housing side

Remove
Cooling Fan
motor leads

Remove (2)
screws from
each Auto-Draft
motor cowling
side

Important:

Cooling Fan
air flow direction

Remove (2) nuts
which secure
Cooling Fan to
motor cowling