Motor, Bearing Housing, And Impeller; Installation - Graco 25C453 Instructions Manual

Motor, Bearing Housing, and Impeller

Installation

All electrical wiring must be done by a qualified
electrician and comply with all local codes and
regulations. Only trained and qualified personnel
who have read and who understand the information
in this manual should install this equipment.
Always maintain a minimum of 1 in. (25.4 mm)
clearance between rotating agitator parts and
container to prevent sparks from contact.
Personal injury or equipment damage may result
from lifting/falling heavy equipment. To avoid
personal injury or equipment damage:
• Do not lift the drum cover and agitator without
proper assistance
• Do not walk or stand beneath a raised elevator.
For best results, do not remove any protective
wrappings from any of the agitator parts until just
prior to assembly and installation. Store all parts
indoors, in clean dry air.
Figure 2 shows the holes for installing agitator flanges
(part numbers 25C454 and 25C453) to the mounting
surface. Holes required in the mounting surface are:
Shaft hole: 1" - 2" (2.54 cm - 5.08 cm)
Mounting the flange (3 methods):
• (3) holes to mount to Graco drum lids that have
mounting surface for back-gear agitator housings.
• (4) holes for 3" 150# ANSI flange pattern (6"
diameter bolt circle). This pattern is for new
installations.
• (4) holes for mounting to an existing Graco LSA
supplied agitator mounting pattern (6.25" diameter
bolt circle).
Figure 2 Agitator Mounting Hole Dimensions
Motor and bearing housing weigh approximately 50
lbs (22.6 kg). Verify that adequate personnel are
available or a secure lifting device is available for use
in positioning and installing.
3A4553D
NOTE: Eye bolts (26) are shipped loose to be
attached for lifting the agitator. See attachment
location ( Parts, page 12).
1. Install bearing housing/flange assembly per the
following:
a. For flange mount: See
Models 25C454 and 25C463, page 12
parts identification. Place gasket (20) and
bearing housing/flange assembly (A) on tank
cover. Install flat washers, mounting bolts,
and nuts (not provided). Tighten securely.
b. For quick-clamp flange mount: See
Models 25C453, 25C575, 25C464, 25C576,
page 14 for parts identification. Place
bearing housing/flange assembly (A) on
top of quick-clamp gasket (not provided)
and existing quick-clamp flange on tank.
Attach with clamp (not provided) and tighten
securely.
c. For pressure tank: See
25C470, 25C471, 25C465, 25C472, 25C473,
page 16 for parts identification. Place gasket
(21) and bearing housing/flange assembly
(A) on pressure tank cover. Install and
secure with lock washer (32) and nut (22).
Tighten securely to prevent assembly from
rotating.
2. Install the retaining ring (6) in the machined slot
in the agitator shaft (24).
3. Slide shaft through the bearing housing/flange
assembly from the top side of the bearing housing
until the retaining ring rests on the upper bearing.
4. Slide the impeller (23) (see Figure 3) onto the
shaft (24) so the blade is pushing material down
with the blade turning clockwise when viewed
from above. Shaft can be moved up and down in
the bearing housing to install the impeller.
5. Position the impeller along the shaft as required:
The distance from the tank bottom to the lowest
impeller blade (BB) should be 1/2 to 1–1/2 times
the impeller blade diameter (blade diameter is
determined by measuring the distance from the
tip of the impeller to the shaft center (AA) and
multiplying by two).
Figure 3 Impeller Installation
6. Secure the impeller by tightening the set screws
(23a). See Parts, page
7. Place coupling (7) onto agitator shaft above the
retaining ring and tighten set screw (7a) securely.
8. Place spider disk coupling (8) on top.
Installation
for
Models 25C462,
12.
7