HomeMy WebLinkAboutS-377403NOTES
General Duplex Grinder Pump With Accessway
Description The contractor shall furnish and/or install one factory -built grinder
pump consisting of two grinder pump core units and all necessary
parts and equipment. This Shall be installed in a factory -built -'--
gallon fiberglass reinforced polyester tank with integral watertight ac-
cessway as described in the following specifications.
Operating The pump(s) shall be of a semi -positive displacement type and be
Conditions capable of delivering 11 gpm against a rated total dynamic head of 92-
feet (40 ) At zero head the output shall be 15 gpm minimum.
Tank
Integral
Accessway
Core Unit
Pump
Grinder
Electric Motor
Mechanical
Seal
Check Valve
Anti -Siphon
Valve
psis .
The pump(s) shall be capable of intermittent (3 minutes minimum)
operation at any heads up to 150% of normal rated dynamic head.
The electrical rating of each pump shall be 8 amperes, 1 phase, 240
volt, 60 Hertz.
Duplex - Gallon
The tank shall be custom molded of fiberglass reinforced polyester
resin and shall have a nominal wall thickness of 1/4" and a net capac-
ity Of gallons. The tank will be fitted with an integral fiberglass
baffle dividing it into two compartments which interconnect just below
the elevation of the inlet fitting inverts. The tank shall be furnished
with one PVC inlet flange to accept 4" nominal diameter PVC drain -
waste -vent (DWV) pipe using the solvent -weld system. This socket
fitting shall be securely fastened to the tank and shall be leak tight.
The upper surface of the Series 6 tank shall be stiffened by use of inte-
grally molded reinforcing ribs and shall be capable of supporting the
combined weight of the pump cores and a workman.
Duplex
The accessway shall be an integral extension of the tank. It shall
have an access opening at the top to accept a lockable cover. The
accessway shall include the following factory supplied items: Grinder
pump discharge extension(s) terminating in watertight bulkhead
fitting(s) with external 1 im4' male pipe thread. Internal wiring shall
terminate in sealed junction boxes integral with accessway and suit-
able for outdoor use.
The grinder pump shall have cartridge type easily removable core as-
semblies containing pump, motor, grinder, controls, check valve, anti -
syphon valve and wiring.
The watertight integrity of the core unit, including wiring and access
cover, shall be established by 100% factory test at a-vdirimum of 5
PSig•
The pump shall be a custom designed, integral, vertical rotor, motor
driven, solids handling pump of the progressing cavity type with me-
chanical seal. The rotor shall be through -hardened, highly polished,
precipitation hardened stainless steel. The stator Shall be of a specifi-
cally compounded ethylene propylene synthetic elastomer. The mate.
rial shall be suitable for domestic wastewater service. Its physical
properties shall include high tear and abrasion resistance, grease re-
sistance, water and detergent resistance, temperature stability, good
aging properties, and outstanding wear resistance.
The grinder shall be positioned immediately below the pumping ele-
ments and shall be direct -driven by a single, one-piece motor shaft.
The grinder impeller assembly shall be securely fastened to the pump
motor shaft. The grinder will be of the rotating type with a stationary
hardened and ground chrome steel shredding ring spaced in accurate
close annular alignment to the driven impeller assembly, which shall
carry two hardened type 400 series stainless steel cutter bars. This
assembly shall operate without objectionable noise or vibration over
the entire range of recommended operating pressures.
The grinder shall be constructed so as to eliminate clogging and jam-
ming under all normal operating Conditions, including starting. Suffi-
cient vortex action shall be created to scour the tank free of deposits or
sludge banks which would impair the operation of the pump. These
requirements shall beaccomplished by the following actions in con-
junction with the pump:
1) The grinder shall be positioned is such a way that solids are fed
in an up -flow direction.
2) The inlet shroud opening shall have a diameter no less than 5
inches.
3) At maximum flow, the average inlet velocity should not exceed
0.2 feet per second.
4) The cutter bars shall extend 0.200 to 0.250 inch above the impel-
ler disc.
_ 5) The impeller disc shall rotate at a nominal speed of 1725 rpm.
The grinder shall be capable of reducing all Components in normal do-
mestic sewage, including a reasonable amount of "foreign objects",
such as paper, wood, plastic, glass, rubber and the like, to finely -
divided particles which will pass freely through the passages of the
pump and the 11/4- diameter discharge pipe.
The motor shall be a 11hp, 1725 rpm, capacitor start, ball bearing,
squirrel cage induction type with a low starting etgent not to exceed
36 amperes and high starting torque of 8.4 foot pounds.
Inherent protection against running overloads or locked rotor condi.
tions for the pump motor shall be provided by the use of an automatic -
reset, integral thermal overload protector incorporated into the motor.
This motor protector combination shall have been specifically investi-
gated and listed by Underwriters Laboratories, Inc., for the applica-
tion.
The core shall be provided with a mechanical shaft seal to preclude
leakage between the motor and pump. The seal shall have a station-
ary ceramic seat and carbon rotating sealing surface with face preci-
sion lapped and held in position by a stainless steel spring.
The pump shall be equipped with a factory -installed, gravity -operated,
flapper -type integral check valve built into the disebArge pipe. This
valve will provide afull-ported passageway when open, and shall in-
troduce a friction loss of less than 6 inches of water at maximum rated
flow. A non-metallic hinge shall be run integral part of the flapper
assembly, providing maximum degrees of freedom for assured seating
even at a very low back pressure. The valve body shall. be made of
PVC.
The pump shall be constructed with a positively -primed flooded sue.
tion configuration. As added assurance that the pump cannot lose
prime even under negative pressure conditions in the discharge piping
system, the pump shall be equipped with an integral anti -siphoning,
air relief valve in the discharge piping just below the main check
valve. This valve will automatically close when the pump is running
and open when the pump is off.
SEC. 16, TWP. 23 N., RGE. 5 E., W.M. 0
Controls
Necessary controls shall be integral with the grinder pump and shall
11/01/91
be located in the top housing of the core unit inside a waterproof
1/24
access cover. The cover will be attached with stainless steel, tamper-
C 'D
proof fasteners.
JISSUEJ
Non -fouling wastewater level detection for controlling pump operation
environmentione
shall be accomplished by monitoring the pressure changes in an inte-
ASSEMBLY, GRINDER PUMP
MODEL 216 - 142
gral, air -bell level sensor connected through air -tight tubingAo a pres-
0,906 P01
sure switch. The level detection device shall have no.moving parts in
direct contact with the wastewater.
4.
Overflow sensing will be accomplished by a separate air -bell sensor of
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the same type.
Controls shall be specified with Control Panet model model
R.
160-4 (visual and audible alarm).
7.
Each level control shall have its own built-in fail safe design which
o:-°
will prevent the entrance of moisture into the controls in case of switch
45° FITTING.
diaphragm failure.
9.
To assure reliable operation of pressure sensitive switches, each core
p
shall be equipped with a quick disconnect breather assembly, complete
q
- with check valve to prevent accidental entry of water into the motor
compartment in the event of accessway flooding.
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An overflow indicator lamp assembly requiring 120 volts and suitable
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for remote installation in a standard device box will be furnished.
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This indicator will be mounted on a decorative wall plate 2 3/4" x 41/2"
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and marked "Grinder Pump Monitor".
I
The grinder pump will be furnished with two ten foot (10') lengths of
type OF cable, pre -wired and connected with weatherproof materials.
a
The power supply cable shall be 12-2 W.GRD., designed for 1phase,
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240 volt, 60 Hertz power supply, and meet UL requirements. The
signal cable to the overflow indicator lamp shall be 14-2 W.GRD.,
designed for 1 phase, 120 volts, 60 Hertz power supply, and meet UL
colt
requirements.
Redundant
Each grinder pump shall optionally include in its package one sepa-
Check Valve
rate check valve for installation in the discharge line between the
to maximum protection
( Recommended
grinder pump and the sewer main ensure
against backflow in the event of sewer line break.
option)
The valve shall be 1 1/4" and of the gravity -operated flapper type. The
PRESSURE
check valve will provide a full -ported passageway when open and shall
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introduce a friction loss of less than 6 inches of water at maximum
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rated flow. A non-metallic hinge shall be an integral part of the
flapper assembly providing maximum degrees of freedom for assured
seating at a very low back pressure.
RCIRY
The valve body shall be made pf PVC compatible with 1 1/4" PVC pipe
In",
solvent -weld system.
Wiring
It shall be the responsibility of the electrical contractor to furnish and
M
install, in compliance with appropriate national and local codes, serv-
l CONTACTS
ice entrance equipment and/or branch circuit protection and all wiring
CONTACTS
to the grinder pump leads.
Corrosion
All materials exposed to wastewater shall have inherent corrosion pro -
i.e., iron, fiberglass, stainless steel, PVC. Any exterior
Protection
tection; cast
steel surfaces are to suitably protected against corrosion.
Serviceability
The grinder pump core unit shall have two lifting eyes provided in the
top housing which can be used to facilitate easy removal of the core
unit from the tank when necessary.
Safety
The grinder pump shall be free from electrical and fire hazards as re-
As of compliance with
quired in a residential environment. evidence
this requirement, the completely assembled and wired grinder pump
in its tank shall be listed by Underwriters Laboratories, Inc.
The grinder pump shall meet accepted standards for plumbing equip-
ment for use in or near residences, shall be free from noise, odor or
health hazards, and shall have been tested by an independent labora-
tory to certify its capability to perform as specified in either individual
or low pressure sewer system applications. As evidence of compliancq
with this requirement, the grinder pump shall bear the National Sani-
tation Foundation seal.
Manufacturer
The equipment specified shall be the product of a company experi-
of pumps for specific use
enced in the design and manufacture grinder
in low pressure sewage systems. The company shall submit detailed
installation and user instructions for its product; submit evidence of
an established service support program including complete parts Bud
service manuals; and be responsible for maintaining a continuing in.
ventory of grinder pump replacement parts.
Limited
The manufacturer shall offer a limited warranty which guarantees its
workmanship
' material and facto P
be free from defects m factory
Warranty
product to
for a period of two years from date of installation or twenty-seven (27)
months from date of shipment, whichever occurs fust, provided the
product is properly installed, serviced, and operated under normal
conditions and according to the manufacturer's instructions. Repair or
parts replacement required as a result of such defect will be made free
of charge during this period upon return of the defective parts or
equipment to the manufacturer or its nearest authorized service center.
DISCONNECT PANEL
�__--____-______-___-
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I ISC� 11541 I OA IDA
MODEL 216 - 142
FOR OUTDOOR INSTALLATION
N 'ali LIN MT
r 6.00 in.
aosEo CELL $PMC
1/r STAINLESS STEEL mus
MID ASSEa9LE (A PLACES)
.60 1 n. - • SI I'M AeNES11C
FIELe APPLr
JOIN102.20 in. <FIJo,ELD
134.20 In. 93.04 in.
FIELD JOINT
DETAIL
37.50 in.
32.00 In.
41.16 in.
60.00 in.
66.00 In.
AVTE: A COAT W ANCIMR OETIEEER 9450 - 102M LOS. (63 - 69
!9 REOWaEO r0 PREvmr rAw FROM r oAnA'6.
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11/01/91
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JISSUEJ
SCALE
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CORPORATION
ASSEMBLY, GRINDER PUMP
MODEL 216 - 142
PA
0,906 P01
MODEL GP 216 SERIES INSTALLATION
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A. Existing grade. 2.0 FT.
B. If open cut method is used, contractor is responsible for additional material.
C. Backfill with excavated material unless selected material is ordered by engineer.
D. Specific depth as defined by engineer for installation site (freeze protection, etc...
E. Backfill with select material in lifts as shown to 90% standard proctor density.
F. PVC sewer pipe. ( 2" PVC, SCH = 40 )
G. Undisturbed earth.
H. Required side elope if sheeting or trenching cage is not used (typical).
NOTE: All trenching shall meet OSHA requirements.
- TYPICAL LOW PRESSURE SEWER TRENCH DETAIL -
N.7.5.
FITTING
BEARING AREA
REO'D
0-45•
2.0 SO. FT.
BEND
45-90•
b
BEND
p'
F.
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3.
BRASS COUPLING -copper to IP.T.
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45° FITTING.
9.
FIELD WIRING
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A. Existing grade. 2.0 FT.
B. If open cut method is used, contractor is responsible for additional material.
C. Backfill with excavated material unless selected material is ordered by engineer.
D. Specific depth as defined by engineer for installation site (freeze protection, etc...
E. Backfill with select material in lifts as shown to 90% standard proctor density.
F. PVC sewer pipe. ( 2" PVC, SCH = 40 )
G. Undisturbed earth.
H. Required side elope if sheeting or trenching cage is not used (typical).
NOTE: All trenching shall meet OSHA requirements.
- TYPICAL LOW PRESSURE SEWER TRENCH DETAIL -
N.7.5.
FITTING
BEARING AREA
REO'D
0-45•
2.0 SO. FT.
BEND
45-90•
3.0 SO. FT.
BEND
STATION ACCESSORIES
1. LOW/HIGH WATER ALARM SENSOR
2. ALARM LIGHT .
_3. ALARM HORN
4. RUNNING TIME METERS
1. ENVIRONMENT I ONE GRINDER PUMP TANK & ACCESSWAY - Fiberglass Reinforced Polyester (FRP).
2. ACCESSWAY COVER -FRP
3. LIFTING EYES -for lining complete grinder pump. Do not use when ballast is attached.
4. ELECTRICAL JUNCTION BOX -leads from grinder pump terminate here. Electrician connects leads from disconnect
box (item 6) thru 2 watertight connectore provided (for OF cable).
5. GRINDER PUMP POWER erD ALARM LEADS - circuit to be run in accordance with applicable electrical codes.
G. RAINPROOF(Nemn 3E,)ENCLOSURE- equipped with circuitbreakers ordisconnect switch, located adjacentto GP.
7. TANK INLET - 4" PVC Socket for solvent cementing DW V pipe: (typ 2 places)
S. TANK VENT
9. GRAVITY SERVICE LINE -4"DWV
10. DISCHARGE OUTLET - 2' Male pipe thread. (to be adapted to 2")
11. GRINDER PUMP DISCHARGE LINE - 2" nominal pipe size.
12. CONCRETE ANCHOR - GP 216 S4 with 4' accessway requires approximatelylOpWlbs (68 cu. ft.) to prevent floatation.
(add 300 lbs per feet of accessway, over 4'). Sleeve over inlet is required if anchor is poured to a level above inlet.
13. BEDDING MATERIAL - G" Minimum, rounded aggregate (pea gravel).
14. FINISHED GRADE,- Grade line to be G" below top of accessway and slope away from accessway opening.
PIPE, /NC.
SECTION VIEW K_�
CONNECTION TO EXISTING METRO MANHOLE
BACKFILL PER
ENGINEERS
SPECIFICATIONS
THRUST BLOCK DETAILS
N.T.S.
AREA
TYPICAL
WARNING LIGHT
MANHOLE - typical 4'-0" 0 prcoat.
2.
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3.
BRASS COUPLING -copper to IP.T.
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4.
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6.
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7.
VALVE -1"blow oft.
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S.
45° FITTING.
9.
FIELD WIRING
PLAN VIEW
10.
VALVE -shutoff.
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CONTACTS
UNIT I
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UNIT 2
1-- -GP
J
-GP
MODEL GP 214
WIRING DIAGRAM
240 V
-
PIPE, /NC.
SECTION VIEW K_�
CONNECTION TO EXISTING METRO MANHOLE
BACKFILL PER
ENGINEERS
SPECIFICATIONS
THRUST BLOCK DETAILS
N.T.S.
AREA
11. NIPPLE - 2" minimum clearance (x).
12. UNION.
13. ADAPTER -PVC to brass.
14. PVC PRESSURE SEWER LINE -2"PVC.
16. SERVICE CLAMP OR TEE - with threaded branch.
16. SUMP BASIN.
17. BEDDING MATERIAL -12" minimum, Crushed stone
18. BURIAL - protect from freezing.
AIR RELEASE VALVE u.i.s.
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Incorporated P.S.
Landscape Architecoue
Urban Design
Planning
23103rd Ave. N.E.
Bellevue, WA 98004
206.454.5723
Revisions: i
ACU(. I3 1493
Date: AUG. 1992
Approved by: KJS
Drawn by:
Scale. - AS NOTED _
Project name:
CEDAR RIVER
GREENWAY_ _
INTERPRETIVE PARK
Sheet title:
GENERAL NOTES 11
DETAILS
Sheet no.
3OF3
SS -3
1.
MANHOLE - typical 4'-0" 0 prcoat.
2.
AIR RELEASE - with copper vent.
e2301�7_VA
3.
BRASS COUPLING -copper to IP.T.
4.
VALVE -12"shut otEL
6.
COUPLING- quick disconnect.
6.
HOSE -back flushing.
7.
VALVE -1"blow oft.
S.
45° FITTING.
9.
1" I.P., 6" long.
PLAN VIEW
10.
VALVE -shutoff.
11. NIPPLE - 2" minimum clearance (x).
12. UNION.
13. ADAPTER -PVC to brass.
14. PVC PRESSURE SEWER LINE -2"PVC.
16. SERVICE CLAMP OR TEE - with threaded branch.
16. SUMP BASIN.
17. BEDDING MATERIAL -12" minimum, Crushed stone
18. BURIAL - protect from freezing.
AIR RELEASE VALVE u.i.s.
V
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L`
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�7
Incorporated P.S.
Landscape Architecoue
Urban Design
Planning
23103rd Ave. N.E.
Bellevue, WA 98004
206.454.5723
Revisions: i
ACU(. I3 1493
Date: AUG. 1992
Approved by: KJS
Drawn by:
Scale. - AS NOTED _
Project name:
CEDAR RIVER
GREENWAY_ _
INTERPRETIVE PARK
Sheet title:
GENERAL NOTES 11
DETAILS
Sheet no.
3OF3
SS -3