Installation Manual

6. Insert new seal seat. For easy assembly, coat OD of seal rubber (either a cup or an O-ring) with
special grease provided in small container. Do not use any other oil or grease. Push seat all the
way down into cavity. Seat must not be cocked relative to shaft. Be sure face of seal stays
absolutely clean – wipe surface with soft, clean cloth if necessary. (See Figure 4.)
7. Install new carbon assembly. Coat inside of rubber bellows with special grease provided (do not
use any other oil or grease) and slide assembly (carbon first) over shaft until carbon meets seat.
Push on rubber insert on very end of assembly and not on outside diameter of carbon retainer. Be
sure carbon face stays absolutely clean. (See Figure 5.)
8. Replace impeller using new impeller screw and washer provided. Make sure cones of both impeller and shaft are clean.
9. Reassemble bracket into pump casing. Use new gasket provided. Clean gasket surface of both casing and bracket if
necessary. Be sure that the longer of the two outside bracket ribs is on top. (See Figure 1.)
10. Reinstall coupler and motor.
11. Follow procedure outlined under “START UP” section where required.
IMPELLER REPLACEMENT:
Follow steps 1 through 3 and 8 through 11 outlined under “SEAL REPLACEMENT” section.
BEARING (CARTRIDGE) REPLACEMENT:
If for some reason the bracket bearings should fail, it is not necessary to replace the entire bracket. A cartridge containing
permanently lubricated ball bearings and shaft is available. To change the cartridge, follow this procedure:
• Follow steps 1 through 4 as outlined under “SEAL REPLACEMENT” section.
• Flip bracket around so that motor end is on top.
• Remove the two outermost socket head screws. (See Figure 6.)
• Pull out old cartridge. If necessary, tap cone end of shaft with a hammer to accomplish this.
• Insert new cartridge and refasten with socket head screws. Make sure shaft sleeve is in place with cone on sleeve
resting against cone of shaft.
• Follow steps 5 through 11 outlined under “SEAL REPLACEMENT” section.
NOTE: It is recommended that when changing the cartridge the water seal be replaced also. However, if you plan to
reuse the water seal, it is not necessary to remove the seal seat. The carbon assembly may be lubricated with water to
make reinstallation easy.
DO IT ONCE. DO IT RIGHT.
®
TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: [phone] FAX: [phone].
TACO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: [phone]. FAX: [phone].
Visit our web site at: http://www.taco-hvac.com
Printed in USA
Copyright 2010
TACO, Inc.
LIMITED WARRANTY STATEMENT
Taco, Inc. will repair or replace without charge (at
the company’s option) any commercial pump
product or part which is proven defective under
normal use within one (1) year from the date of
start-up or one (1) year and six (6) months from
date of shipment (whichever occurs first).
Taco, Inc. will repair or replace without charge (at
the company’s option) any 1600 series commercial
circulator bearing cartridge which is proven defec-
tive under normal use within three (3) years from the
date of start-up or three (3) years and six (6) months
from date of shipment (whichever occurs first).
Seals provided on commercial pumps are not
covered by this warranty.
In order to obtain service under this warranty, it is
the responsibility of the purchaser to promptly
notify the local Taco stocking distributor or Taco in
writing and promptly deliver the subject product or
part, delivery prepaid, to the stocking distributor.
For assistance on warranty returns, the purchaser
may either contact the local Taco stocking distrib-
utor or Taco. If the subject product or part con-
tains 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 operat-
ed in conformity with Taco instructions or which
has been subject to misuse, misapplication, the
addition of petroleum-based fluids or certain
chemical additives to the systems, or other
abuse, will not be covered by this warranty.
If in doubt as to whether a particular substance is
suitable for use with a Taco product or part, or for
any application restrictions, consult the applica-
ble Taco instruction sheets or contact Taco at
[401-942-8000].
Taco reserves the right to provide replacement
products and parts which are substantially similar
in design and functionally equivalent to the defec-
tive product or part. Taco reserves the right to
make changes in details of design, construction,
or arrangement of materials of its products with-
out notification.
TACO OFFERS THIS WARRANTY IN LIEU OF
ALL OTHER EXPRESS WARRANTIES. ANY
WARRANTY IMPLIED BY LAW INCLUDING
WARRANTIES OF MERCHANTABILITY OR FIT-
NESS IS IN EFFECT ONLY FOR THE DURATION
OF THE EXPRESS WARRANTY SET FORTH IN
THE FIRST PARAGRAPH ABOVE.
THE ABOVE WARRANTIES ARE IN LIEU OF
ALL OTHER WARRANTIES, EXPRESS OR
STATUTORY, OR ANY OTHER WARRANTY
OBLIGATION ON THE PART OF TACO.
TACO WILL NOT BE LIABLE FOR ANY SPE-
CIAL, INCIDENTAL, INDIRECT OR CONSE-
QUENTIAL DAMAGES RESULTING FROM THE
USE OF ITS PRODUCTS OR ANY INCIDENTAL
COSTS OF REMOVING OR REPLACING
DEFECTIVE PRODUCTS.
This warranty gives the purchaser specific rights,
and the purchaser may have other rights which
vary from state to state. Some states do not allow
limitations on how long an implied warranty lasts
or on the exclusion of incidental or consequential
damages, so these limitations or exclusions may
not apply to you.
Figure 1 Figure 2 Figure 3AFigure 3 Figure 4 Figure 5
Figure 6