6. Remove the old seal seat and cup from the seal face
plate. Lubricate the new cup with soapy water and
install new parts in the face plate recess. Replace the
face plate to its original position. Carefully tap the face
plate evenly into the recess in the motor housing.
7. Clean the impeller shaft before installing the new seal.
8. Lubricate the impeller shaft with soapy water. Do not
install new seal on a dry impeller shaft or damage to
seal may result.
9. Slide the new carbon seal and spring assembly onto
the shaft until it contacts the seal seat.
10. While holding the rotor in place as in Step 3, thread the
impeller onto the shaft in a counter-clockwise direction
until it stops. Check to make sure the pump will rotate.
If the impeller will not spin freely, contact Taco Technical
Support at 1-401-942-8000.
11. Remove old body gasket and replace with new gasket
provided in seal kit. Press gasket into seal face plate,
then attach motor to casing. Use caution not to pinch
body gasket or leaks may result.
12. Attach the pump casing to the motor housing and
secure with the four body bolts. Be sure flow arrow on
casing is pointing in proper direction. Tighten the four
bolts evenly in a criss-cross pattern to 70 in-lb of
torque. There should be a small, even gap between the
casing and the motor mounting bracket.
13. Re-install circulator into system using new flange
gaskets, if required.
14. Reconnect electrical wiring. Do not open electrical sup-
ply to pump until “System Start-Up” steps are complete.
SYSTEM START-UP:
1. Prior to pump start-up, closed heating and cooling sys-
tems should be thoroughly cleaned, flushed and drained.
2. Open isolation valves and re-fill system with clean water.
Check for any leaks.
3. Vent all air from system at an air vent located at the
high point in the system.
4. Start circulator to check for proper operation.
PERIODIC INSPECTION, MAINTENANCE:
Taco 2400 Series Hi-Capacity circulators are designed to
provide years of trouble-free service. However, periodic
inspection and routine maintenance is recommended for all
hydronic systems and mechanical equipment. If any evi-
dence of leakage or damage is present, take preventive
steps to repair or replace the circulator immediately.
CAUTION: Do not start the pump until the sys-
tem has been completely filled and vented.
Running the pump dry may damage the
mechanical seal and void warranty.
CAUTION: Do not allow screwdriver to make
contact with motor windings or insulation.
Permanent damage to motor may result.
Fig. 1: Exploded View of Pump
SEAL SPRING
BODY GASKET
SEAL RETAINER
CASING
MOTOR ASSEMBLY
FACE PLATE
ROTATING SEAL
IMPELLER
BODY BOLTS (4)
TORQUE TO
65 15 IN-LBS
STATIONARY SEAL
2400 (3P MODELS)
TACO, INC.
, 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360.
TACO (Canadá), Ltd.
, 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: 905/564-9422. FAX: 905/564-9436.
Visit our web site at:
http://www.taco-hvac.com
Printed in USA
Copyright 20150
TACO, Inc.
