16 UNIBLOC-PD Operation & Service Manual: PD600-677
ROTOR WEAR RING
SCREWDRIVER SLOTS
FOODFIRST ROTOR
fig. 4.4.5
DOWEL PIN HOLES
ROTOR WEAR RING
fig. 4.4.6
DOWEL PIN HOLES
FRONT COVER WEAR RINGS
fig. 4.4.7
4.4.1.4.3 FoodFirst Rotor Removal
(reference fig. 4.4.1)
E
ach
FoodFirst Rotor
is composed of two parts, a
Rotor
and a
Rotor Wear Ring
. During assembly and operation
the
Rotor Wear Ring
is seated in a groove on the Rotor. When maintenancing the pump, the
Rotor Wear Ring(s)
may dislodge from the
Rotor(s)
during
Front Cover
removal. If the
Rotor Wear Ring(s)
are still seated in the
Rotors
after cover removal, they can be removed once the rotors have been removed from the
Rotor Housing
. Remove the
Rotors
from the
Rotor Housing
by sliding them off the shafts. Be sure to place the rotors in a safe place while main
-
tenancing the pump, as they can be easily damaged.
4.4.1.4.4 FoodFirst Rotor Wear Ring Removal
(reference fig. 4.4.5)
The
Rotor Wear Rings
may be removed from the
Rotors
by gently prying them with a small flat head screwdriver.
Screwdriver slots are located along the perimeter of the wear rings to aid in removal. Once removed, be sure to store
wear rings in a safe place.
4.4.1.4.5 FoodFirst Rotor Wear Ring Installation
(reference fig. 4.4.6)
Thoroughly clean
Rotors
and
Wear Rings
before installing. Inspect
Rotor Wear Rings
for excessive wear and dam-
age. If damaged, replace
Wear Rings
with new ones. If
Rotor Wear Ring
is not damaged, it is important to ensure
that it is within the acceptable wear range
(
see section 6.5
).
To check wear level, insert the wear ring into the rotor
by aligning the wear ring dowel pins with the rotor dowel holes. If the
Rotor Wear Ring
is within the acceptable wear
range (
see section 6.5
), remove the wear ring and place a generous amount of food grade grease on each dowel pin
before aligning and installing the wear ring for final installation.
4.4.1.4.6 FoodFirst Rotor Installation
(reference fig. 4.4.1)
With the
Rotor Wear Ring
installed, align missing rotor spline with missing shaft spline and slide rotor onto shaft.
4.4.1.4.7 FoodFirst Front Cover Wear Ring Installation
(reference fig. 4.4.7,
section 6.5
)
Thoroughly clean
Front Cover
and
Wear Rings
before installing. Inspect
Front Cover Wear Rings
for excessive
wear and damage. If damaged, replace
Wear Rings
with new ones. If
Cover Wear Ring
is not damaged, it is impor
-
tant to ensure that it is within the acceptable wear range
(
see section 6.5
)
. To check wear level, insert the wear ring
into the cover by aligning the wear ring dowel pins with the cover dowel holes. If the
Cover Wear Ring
is within the
acceptable wear range
(
see section 6.5
)
, remove the wear ring and place a generous amount of food grade grease
on each dowel pin before aligning and installing the wear ring for final installation.