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

Motor, Bearing Housing, and Impeller

Installation

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
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.
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.
3A4553A
1. Install bearing housing/flange assembly per the
following:
a. For flange mount: See
Parts — Flange Mount , page 12
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
Parts — Quick-Clamp Mount , page 14
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
Parts — Pressure Tank Mount , page 16
parts identification. Place washer (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) with spring side down.
3. Slide shaft through the bearing housing/flange
assembly from the top side of the bearing housing
until the spring clip rests on the upper bearing.
4. Shaft can be moved up and down in the bearing
housing to install the impeller. 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.
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
5. Secure the impeller by tightening the set screws
(23a).
6. Place coupling (7) onto agitator shaft above the
clip and tighten set screw (7a) securely.
Installation
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