Install Instructions

REPLACING SEALS:
Water flowing from weep hole in bracket normally indicates dirt on the seat or seal needs replacement. Before taking
pump apart, extend spring coupling and impeller shaft into body as far as it will go. This will separate the seal halves and
permit a greater flow through the weeping hole and wash any foreign matter off the seats. Release and if flow stops, it
indicates that the seals do not require replacement. If the flow does not stop, loosen the two set screws on the coupling
and extend as far as it will go. If leak stops, it means there was insufficient tension on the coupling. If leak continues,
indications are that the seal needs replacement. Proceed as follows:
1. Disconnect wiring.
2. Valve off or drain system.
3. Remove body bolts and pull entire assembly out of body.
4. Loosen the two set screws at pump end of spring coupler, file off any burrs on shaft and pull impeller and shaft from
bracket.
5. Pry out old seal seat from bracket with a screwdriver and old part from impeller shaft with a pair of pliers.
6. Clean shaft and seal bearing surfaces thoroughly with clean cloth.
7. Dip CARBON part of seal in water to lubricate. Place on top of impeller shaft with carbon facing up. Push down on
shaft with palm of hand as far as it will go. Then with both thumbs push all the way down, making certain that prongs
engage the two holes in the impeller. If there are no holes in the impeller, break off the prongs with a pair of pliers and
smooth burrs with a file.
8. Separate rubber from ceramic part, wet it and set into recess in bracket. Set ceramic seal into rubber with seat fac-
ing out by starting at a slight angle first, then pushing away and down simultaneously. The rubber rings should not
be folded over during the operation. Make certain that both the rubber and ceramic are “bottomed” squarely.
9. Clean both seal surfaces with a clean lintless cloth.
10. Place a few drops of oil along the impeller shaft and push slowly with a twisting motion through ceramic part into
bracket and spring coupling.
11. While holding impeller and shaft with seal faces mating, insert an Allen wrench into one of the set screws in the coupling.
Extend spring
3
⁄
16
".
12. Remove old body gasket, clean surfaces and replace with new gasket.
13. Place entire assembly into body, replace and tighten bolts gradually and evenly all around.
14. Refill system. If water leaks from weep hole in bracket, increase tension on spring coupling slightly or until leak stops.
15. Rewire motor.
(ALL PRODUCTS EXCEPT 00 SERIES
CIRCULATORS, 570 SERIES ELECTRIC
ZONE VALVES, COMMERCIAL PUMPS,
COMMERCIAL CIRCULATORS. SEE SEP-
ARATE STATEMENTS OF WARRANTY
TERMS FOR THESE PRODUCTS.)
Taco, Inc. will repair or replace without
charge (at the Company’s option) any prod-
uct or part which is proven defective under
normal use within one year from the date of
start-up or one year and six months from
date of shipment (whichever occurs first).
In order to obtain service under this war-
ranty, it is the responsibility of the purchaser
to promptly notify the company in writing
and promptly deliver the item in question,
delivery prepaid, to the factory. For complete
details on warranty returns, the purchaser
should contact a local Taco stocking distrib-
utor or the Company. If the product or part in
question contains no defect as covered in
this warranty, the purchaser will be billed for
parts and labor charges in effect at time of
factory examination and repair.
Any Taco product or part not installed or
operated in conformity with Taco instruc-
tions or which has been subject to misuse,
misapplication, the presence of certain
chemicals (such as solvents, acids, etc.)
or other abuse will not be covered by this
warranty. For complete information on
chemical and application restrictions, the
purchaser should contact the Company.
Taco, Inc. reserves the right to make
changes in details of design, construction,
or arrangement of materials of its products
without notification.
TACO, INCORPORATED OFFERS THIS
WARRANTY IN LIEU OF ALL OTHER
EXPRESS OR IMPLIED WARRANTIES. NO
WARRANTIES ARE MADE FOR MER-
CHANTABILITY OR FITNESS FOR USE
AND THERE ARE NO WARRANTIES
WHICH EXTEND BEYOND THE DESCRIP-
TION CONTAINED HEREIN. TACO, INC.
WILL NOT BE LIABLE FOR ANY SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAM-
AGES.
WARRANTY TERMS