Thrush Vertical Water CCirculators - Manual (Page 2)

Peru, IN 46970 (765) 472-3351
www.thrushco.com
Thrush Co., Inc.
P.O. Box 228 * 340 West 8th St.
VERTICAL WATER CIRCULATOR
TO REMOVE AND REINSTALL MOTOR
1. Turn off current and disconnect wiring to motor.
2. Loosen set screw "B".
3. Remove three bolts "D", and lift motor (with coupling
attached) from bracket. Each bolt has two mounting
springs (one above and one below bracket) and a
spring cup; caution should be exercised with these
parts as replacements are not furnished.
4. When replacing the motor, loosen the set screw "C"
and slide the coupling off of the old motor shaft.
Fasten the spring coupling to the new motor by
tightening the set screw "C" down on flat of motor
shaft. Coupling should be within 1/4" of the motor
face.
5. Set mounting springs in recesses on top of the bracket
6. Set motor in place on springs. Guide coupling over
impeller shaft. Assure mounting springs are in motor
base recesses.
7. Start motor mounting bolts "D" into motor, push down
on top of motor, applying enough pressure to relieve
spring tension on bolts "D" an hand tighten. Assure
that springs are seated in spring cups as shown in
illustration.
8. Stretch spring coupling approximately 1/8" toward
casing. CAUTION: Spring coils should not touch;
as this will result in excessive noise. Tighten set
screw "B" down flat on impeller shaft.
9. Rewire motor and turn on current. In installing new
motor, fill motor oil cups with S.A.E. #20 non-
detergent oil.