Grind Hog - Model 10T/S -Comminutors
There will be furnished one (1) only Grind Hog Model 10T/S Comminutor as manufactured by G.E.T. Industries, Inc. Rotation shall be in a clockwise direction.
1.1 Design Criteria
The comminutor shall be designed to handle the flows indicated below, within the head loss noted.
a) hydraulic capacity 1.2 MGD (4500m3/day)
b) satisfactory operation shall occur under conditions of zero flow
c) head loss at peak flow shall not exceed 10 inches (250)
d) design shall be such that the flow enters the size reduction and screening device horizontally and
exits vertically downward to facilitate the flushing of solids
1.2 Cover Plate
Shall be:
b) fitted with 4 position lock down arrangement, and 2 alignment holes for repositioning following service
c) located on, and positioned by wall mounted supports allowing for ease of removal for inspection
and maintenance.
1.3 Rotating Drum Screen
a) heavy-duty Cast Ductile Iron ASTM 536, grade 60-45-18
1.4 Cutting Elements
a) replaceable shear bars constructed of high-quality A2 tool-steel shall be attached to the rotating
drum. Each shear bar shall be machined from solid bar stock, surface ground to establish exact
tolerances
b) the stationary cutting bar, shall be of high-quality 01 tool steel hardened to a minimum of 56 Rockwell C, and shall be reversible, allowing for four (4) sets of cutting edges prior to sharpening or replacement
c) all submerged fasteners shall be of stainless steel
1.5 Motor
TEFC 1 Hp. Motor suited to outdoor weatherproof service (IP55) on _____ volt, ____ phase, ____ cycle service. Close-coupled
1.6 Drive Arrangement
a) the motor shall be close-coupled to a speed reducer drive, a heavy duty planetary gear of the totally
enclosed non-vented type suitable for total submergence during emergencies
b) double seals on the output shaft shall ensure flood-proof operation through a reduction ratio of 35:1
c) the cycloidal reducer shall be capable of withstanding shock loads to 500% of its mechanical rating
of 4.27 Hp. and be warranted for two (2) years
d) the drive shall have a minimum full load efficiency of 90% and be pre-lubricated with grease,
requiring routing maintenance every 500 to 1,000 hour
1.7 “Toilet Seat” Channel Mounting System
Shall consist of a box style structure fabricated of 304 stainless steel dimensioned to suit the existing channel and supported from above for ease of installation