CONSTANT PRESSURE BOOSTER SYSTEMS AURORA 750/760 SerieS “APCO-PM”

CONSTANT PRESSURE BOOSTER SYSTEMS AURORA 750/760 SerieS “APCO-PM”
Model 763
AURORA 750/760 Series
“APCO-PM”
“AURORA-PC”
®
CONSTANT PRESSURE BOOSTER SYSTEMS
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CONSTANT PRESSURE BOOSTER SYSTEMS
AURORA 750/760 Series
®
Constant Pressure Booster Systems
Introduction Constant Pressure Pumping
Ever increasing public demands and uses for water causes reductions
in pressure in municipal and industrial park supply systems. With
each additional new building unit that is constructed there may be
a permanent or temporary water pressure problem created. Where
these situations exist, they must be corrected for health and safety
reasons. Aurora, “The Liquid Tamer” company, offers two alternatives.
Constant Speed–Constant pressure systems are economically desirable
for applications up to and including 20 horsepower. Please read this
bulletin and see how Aurora can solve your immediate water pressure
problem. Variable Speed–Constant pressure systems for applications to
60 hp use “Apco-Matic”, the all electrical concept which has been specified
and installed by several thousand domestic and foreign users. “Apco-Matic”
is the ideal solution for controlling variations in liquid pressure and a number
of important features are described in Bulletin 700. Duplex constant speed
constant pressure systems are provided normally as standard for most
variable flow selections. For larger capacities triplex is provided.
Current Sensing Pumping Systems
Each pump has a check valve or combination pressure reducing and check
valve in its discharge line. The lead pump has a current sensor on its power
lead. The lead pump is the first to run and will develop pressure which in turn
is reduced to a constant pressure, preset at the pressure reducing valve by
the factory. The lag pumps are in the “Auto” mode at this time of operation.
When the lead pump reaches its design flow, the current sensor causes
the second pump to start up. A current sensor on the number two pump
will cause a third pump to start should the demand continue to increase.
Reduced demand will reverse the sequence logic until ultimately only the
lead pump is left in operation. The system simply starts up pumps or else
shuts them off sequentially to assure that the required system pressure is
constantly maintained with best efficiency.
Pressure Sensing Pumping Systems
The control panel incorporates pressure-sensing logic. Each pump has
a check valve or combination pressure reducing and check valve in its
discharge line. The lead pump will energize when system pressure drops to
lower setpoint on lead pump switch. If pressure continues to stay low, the
lag pump will also start. Both pumps will run on a minimum run timer and
then shut down sequentially.
Quick Reference 750/760 Series Feature Selector
Standard – 750/760
Standard – 760 Only
• Bronze fitted pump construction
• Back pull-out casings
• Bronze shaft sleeves
• Dynamically balanced vacuum cast
enclosed impellers
• Casing wear rings
• 303 stainless mechanical seals with Buna- N, ceramic
and carbon parts
• Pressure regulating valves
• Pilot operated
• Flanged suction and discharge
• Galvanized piping
• Pressure gauges
• Factory assembled and prewired
• System performance tested
• High efficiency JM motors
• Model 341 horizontal pumps
Standard – 750 Only
• High efficiency JM motors
• 30" doorway clearance installation
• 37" doorway clearance for units with tanks
• Vibration dampening suction bases
• Model 342 vertical pumps
2
Standard – Current Sensing
• UL Listed panel
• High temperature cutout
Standard – Pressure Sensing
• Low suction pressure shutdown and alarm
• Automatic pump alternation
• Lead pump failure circuit and alarm
• Alarm test circuit
• Alarm sequence with alarm horn and silence reset
• UL Listed panel
Optional – 750/760
• Aurora power management
• Control panel enclosures
• Power on pilot light
• Phase reversal /failure relay
• Lightning arrestors
• Circuit breakers (in lieu of fuse clips)
• Alternating 24 hour time clock
• Flow meter
• “Lead-lag” selector switch
• Space heaters
• Nonferrous (copper) piping
• “Kit” construction
• Special units (Apco-Matic)
• Gauge panel
• Vibration dampers
• High temperature purge
• High suction pressure shutdown
• No flow shutdown
• High system pressure alarm
• Low system pressure alarm
• Remote alarm auxiliary contacts
• High suction pressure or no flow
shutdown switch
Optional – Current Sensing
• Low suction pressure alarm and shutdown
Optional – Pressure Sensing
• Lag pump sequencing by flow switches
CONSTANT PRESSURE BOOSTER SYSTEMS
System Features
1. System Capacity in GPM: The required system capacity is based on
the type of units illustrated in Figure 1.
a.)Add the total values for each type of fixture selected, based on the
required number of individual fixtures. Once the total flow units have
been tabulated, the required system capacity can be determined from
Figure 2.
2. Pump Selection: Several factors must be taken into consideration that will
have an effect on the ideal determination of the actual pump size required.
a.)Most normal or average apartment and office building water
requirements are significantly less than the maximum required. Most
of the time the demand will not exceed 30% of the peak demand. As
a result of this, it is both practical and economical to size the lead
pump for low demand applications. The lag pumps would, in addition
to the lead pump, handle extra capacity.
d.)The type of installation and
horsepower requirements will
affect the selection process
decision, duplex or triplex.
Normally the capacity range
between 350 and 450 GPM is
the area where the crossover
will occur in making the
decision, duplex vs. triplex.
e.)When capacity requirements
are about equal, a duplex
system can be selected with
each pump in the duplex
system rated at approximately
60% of system capacity.
b.)Duplex pump systems normally are sized based on a 25% lead pump, 3.System Head in Feet: The
75% lag pump capacity split.
required system head is based on the following facts :
a.)Calculate the maximum elevation or the facility height in feet to
c.)Triplex pump systems normally are sized on a 20% lead pump with
which the water is to be pumped.
40% for each of the lag pumps. For some applications it may be
desirable to proportionately increase the percentage capacities to
b.)At the system capacity point in GPM from Figure 2, add the system
assure a greater standby capacity should any other pump in the
friction losses.
system fail or should the building capacity increase.
c.)Calculate the pressure in psi that is to remain constant at the
Fig. 1 – Fixture Value Units
greatest distance.
Type of Fixture
Bathroom Flush valves
Flush tanks
Bathtub Emmergence
Immersion
Standard
Domestic Dishwasher–general
Dishwasher–pan and pot
Drinking fountain
Garbage disposal (sink)
Hose 3/4"
Ice cube machine
Laundry tub
Steam tables
Washing machine
Lavatory
Shower Emergence
Standard
Sink
Bar
General
Kitchen
Laboratory
Service
Toilet
Flush tank
Flush valve
Urinal
Flush tank
Flush valve–pedestal
Flush valve–stall or wall
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Home /Private (1)
8
6
–
–
2
2
–
–
2
4
1
2
–
4
1
–
2
2
–
2
–
2
3
6
–
–
3
Semi-public (2)
–
–
–
–
3
4
3
1
3
4
1
3
1
6
1
8
3
3
3
3
2
3
4
8
3
8
4
Commercial /Public (3)
–
–
4
20
4
6
3
2
–
–
–
–
1
–
2
8
4
–
3
4
–
4
5
10
5
10
5
d.)Subtract the average suction head in feet that will be available to the
pumps. If the minimum suction head is far below the average suction
head, select a working suction head somewhere between the two.
Totally Dynamic Head Computation (in Feet or Meters)
a.)Static head
(distance from pump to highest fixture) ____
b.)Friction loss thru piping
+ ____
c.)Pressure required at highest fixture + ____
d.)Suction head at pump
(average suction pressure at pump) + ____
Note: 1 M = 3.2808 Ft.
1 Ft. = .3048 M.
T.D.H. = ___
4. Combination Pressure Reducing and Check Valve Selection:
The recommended valve sizes are based on GPM requirements.
5. Duplex and Triplex Pump Selection: Once the system head and individual
pump capacity have been determined, the pumps can be selected from
the range charts and individual performance curves.
3
CONSTANT PRESSURE BOOSTER SYSTEMS
System Features
A.
Completely Assembled
J.
Bronze Shaft Sleeve
K.
Mechanical Seal
L.
Back Pull-Out
and prewired for easy installation. Compact design allows unit to be moved through
standard 30" doorways for most systems and 37" for largest “APCO-PM” System
and 48" for largest “Aurora® PC” units during initial pump unit installation.
has been specifically designed by Aurora for pressure boosting applications and
incorporates the following features as standard:
Low suction pressure shutdown
Automatic pump alternation
Lead pump failure circuit
Alarm test circuit
Alarm sequence with alarm horn and silence reset
The Programmable Controller incorporated into the UL Listed NEMA-1 Control Panel
readily allows for the addition of optional control functions and alarm features.
B. Pressure Sensing Control Panel
B.
Current Sensing Control Panel
in NEMA-1 enclosure is UL listed.
prevents shaft wear and extends the entire length of the seal box. Sleeve and
impeller screw are sealed by 0-ring gaskets to eliminate corrosion of the shaft by
the liquid being pumped.
C.
is keyed to the shaft. Quality controlled manufacturing process assures
consistently high performance. Enclosed design provides highest efficiency and is
vacuum cast. A case wear ring prevents wear on the pump casing and is easily and
inexpensively replaced as necessary.
(optional) Low pressure shutdown and other pressure switches available.
Pressure Reducing
valves automatically reduce higher inlet pressure to a constant downstream
pressure regardless of changing flow rate or inlet pressure. Pilot control settings
are made easily. Return flow is prevented when line pressure may be reversed due
to system variations. For some applications where discharge pressure is not critical
or where suction pressure is relatively constant as with a reservoir, silent check
valves may be substituted for pressure reducing valves.
D. Two Factory Tests
E.
760 Systems
E.
750 Systems
F.
Galvanized Piping
G.
“Apco-PM”
O.
Groutable Formed Steel Base
units feature flanged inlet cast vertical base which supports each pump to provide
system vibration dampening qualities.
provides complete support, while still allowing the unit to be readily maneuvered
for installation.
Hydropneumatic Pressure Tank
(not illustrated) can be optionally provided to maintain system pressure during
periods of low demand. Depending on specific application, the tank can be located
adjacent to the system in the equipment room, remotely located, or mounted in
common with the system on the baseplate.
A
feature Aurora Model 342A vertical centrifugal endsuction pumps in
bronze-fitted construction.
for corrosion resistance and to meet various local codes is schedule 40. Flanged
connections provide easy installation.
H
B
I
Thermostat
senses heat buildup in system under certain no-flow conditions and shuts down
lead pump until the temperature returns to an acceptable limit. There is no bypass
and/or cooling water recirculated or wasted down the drain.
Pressure Gauges
I.
Gate Valves
N.
feature Aurora Model 341A horizontal centrifugal end-suction pumps in
bronze-fitted construction.
H.
4
provided as standard assure system reliability.
design simplifies disassembly. Suction and discharge piping is not disturbed
and/or misaligned when servicing pumps. Standard motor approved by a joint NEMA
and the Hydraulic Institute provides low noise level pump operation. A carbon steel
motor shaft is designed for minimum deflection not to exceed .002" at seal faces
when at maximum load. Bearings are selected for a long service life under severe
operating conditions.
M. Dynamically Balanced Impeller
Pressure switch
has carbon against ceramic face for optimum water performance. Long life is also
assured with 303 stainless steel metal parts –“Buna-N” elastomers.
located on suction and discharge manifold.
provided on each pump suction and discharge branch which allow individual pumps
to be serviced without interrupted operation.
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CONSTANT PRESSURE BOOSTER SYSTEMS
System Features and Engineering Details
System
Model
752
Duplex
System
Model
753
Triplex
System
Model
762
Duplex
System
Model
763
Triplex
Cap
GPM
0–200
201–400
401–600
601–800
Vertical Pumps
Flanged Manifolds
Suction
Discharge
4
3
4
4
5
5
6
6
Weight in Lbs.
Manifold
Control
690
720
120
890
890
Cap
GPM
0–200
201–400
401–600
Over 600
Vertical Pumps
Flanged Manifolds
Suction
Discharge
4
3
4
4
5
5
6
6
Weight in Lbs.
Manifold
Control
980
1010
140
1220
1425
Cap
GPM
0–450
0–450
451–600
451–600
601–800
601–800
Horizontal Pumps
Flanged Manifolds
Suction
Discharge
4
4
4
4
5
5
5
5
6
6
6
6
Weight in Lbs.
Manifold
Control
575
600
625
60
650
700
725
Cap
GPM
0–450
0–450
451–600
451–600
601–1200
601–1200
Horizontal Pumps
Flanged Manifolds
Suction
Discharge
4
4
4
4
5
5
5
5
6
6
6
6
Weight in Lbs.
Manifold
Control
800
825
875
90
900
950
1025
Material
Pump casing
Cast Iron ASTM A48
Pump wear ring
Bronze ASTM B62
Pump impeller
Bronze ASTM B62
Pump bracket
Cast Iron ASTM A48
Pump shaft
Steel AISI C1045
Pump sleeve
Bronze ASTM B62
Pump mechanical seal
303 SST w/ metal parts, BUNA-N
elast. parts, ceramic seat
and carbon washer
Base
Struct. Stel A36
Piping
Galv. Steel Commercial
Check valve
Cast Iron or Bronze ASTM B584
Tank
Pilot operated press.
regul. valve
Gate valves
Body
Carbon Steel ASME 125#
Bag
Heavy Duty Rubber or PVC FDA app.
Body
Cast Iron ASTM A48
Trim
Brass QQ-B-626
Pilot valve
Bronze ASTM B62
w/ AISI 303 S.S. Trim
Diaph.
Nylon Reinf. BUNA-N
Stem
SST AISI 303
Body
Brass QQ-B-626
Trim
Brass QQ-B-626
Stem
Brass QQ-B-626
Controller
U.L. Listed Commercial
Gauge body
Steel Commercial
F
I
A
Materials of Construction
System Part
Models 752–753
Base Weight in Lbs.
B
Type
Without Tank
When Tank is Used
Grout Holes in
Base
Duplex
286
592
1
Triplex
352
673
2
C
D
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Models 762–763
Base Weight in Lbs.
When Tank is Used
Grout Holes in
Base
Type
Without Tank
Duplex
196
357
1
Triplex
272
433
1
F
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CONSTANT PRESSURE BOOSTER SYSTEMS
Dimensional Data
1-1/4 x 1-1/2 x 7
Code A
1-1/2 x 2 x 7
Code B
2 x 2-1/2 x 7A
Code C
2-1/2 x 3 x 7B
Code D
1-1/2 x 2 x 9C
Code E
2 x 2-1/2 x 9
Code F
1-1/2 x 2 x 9C
Code E
2 x 2-1/2 x 9
Code F
2-1/2 x 3 x 9
Code G
1-1/2 x 2 x 12
Code L
2-1/2 x 3 x 12
Code M
2 x 3 x 11
Code P
6
P1
760
750
6-3/4
10-1/4
4-1/4
7-1/8
10-1/4
4-1/4
7-1/2
P2
P3
1
1-1/2
2
3
2
3
5
3
5
7-1/2
7-1/2
10
7-1/2
10
15
20
7-1/2
10
167
177
177
188
186
207
230
236
259
291
301
302
337
338
428
464
311
312
10-1/4
4-1/4
8
11-1/4
4-1/4
7-1/8
11-1/4
4-1/4
7-1/2
1750 RPM Pumps
Motor hp O.D.P. Wgt.
Lbs.
Pump
Size
750
11-3/4
HD (†)
750
Check Valve
760
M
760
Duplex/Triplex Duplex/Triplex
without tank
with tank
750 760 750 760
8-1/2 11-3/4 4-1/4
11-3/4 4-1/4
Code
AC
BC
CD
DC
EC
FC
Size
1-1/4
1-1/2
2
2-1/2
3
4
Wgt.
4
4
5
7
11
18
Code
AP
BP
CP
DP
EP
FP
Size
1-1/4
1-1/2
2
2-1/2
3
4
Wgt.
40
40
50
70
90
125
Pilot Operated Valve
Direct Acting Valve
4-1/4
8-1/8 11-1/4 4-1/4
9
M
Refer to individual dimension sheets
P3
HD (†)
7-1/4
7-1/4
7-1/4
8-1/8
13
6
6
9
13-1/4
6
5
9
12-1/4
6
5
Refer to individual dimension sheets
P2
3500 RPM Pumps
Motor hp O.D.P. Wgt.
Lbs.
2
123
3
144
5
167
7-1/2
199
5
172
7-1/2
204
10
205
5
178
7-1/2
210
10
211
15
301
20
337
10
214
15
306
20
342
7-1/2
224
10
225
15
315
20
351
15
316
20
352
Refer to individual dimension sheets
Size
Pump
P1
Code
A
B
C
Size
1-1/2
2
2-1/2
Wgt.
20
25
30
NOTES:
(1) Dimensions and weights are approximate.
(2) All dimensions are in inches and may vary ± 1/ 2".
(3) Add pumps, base, manifolds, pressure regulating
valves or check valves, tank, if required, and
controller weight for unit weight.
(4) Not for construction purposes unless certified.
(5)Aurora® reserves the right to make revisions to its
products and their specifications, and to this bulletin
and related information without notice.
(6) When making pump selections, do not mix 1750 RPM
and 3500 RPM pumps, or 7" and 9" pumps.
(7) Refer to individual dimension sheets for complete
dimensions on all units.
(†)Always use “HD” dimension for largest pump size
specified.
CONSTANT PRESSURE BOOSTER SYSTEMS
Performance Data
3500 RPM
1750 RPM
Tank Size (Gallons)
T
D
79
106
132
158
170
211
59
53
61
70
80
69
24
30
30
30
30
36
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Hydropneumatic Tanks
125 psi
271
284
298
358
–
513
175 psi
325
343
349
436
–
626
Weight
200 psi
–
–
–
–
473
–
250 psi
400
435
465
500
–
813
7
CONSTANT PRESSURE BOOSTER SYSTEMS
750 Series Dimensional Data and Engineering Details
Duplex
Dim.
HA
HB
HE
HF
HG
HP
VS
750 Series – Dimensions
Duplex
Without Tank With Tank
3500 1750
29-1/2 29-1/2
36
56
74
95
14
21
21
43-1/2 61-1/2
79-1/2
3
3
4
7-3/4 7-1/2
7-1/2
42* 42*
48**
* 48" when 4" PRV is used.
** 54" when 4" PRV is used.
Duplex with Tank
Triplex
Dim.
HA
HB
HE
HF
HG
HP
VS
750 Series – Dimensions
Duplex
Without Tank With Tank
3500 1750
29-1/2 29-1/2
36
69
95
108
14
21
21
56-1/2 79-1/2
92-1/2
3
3
4
7-3/4 7-1/2
7-1/2
42* 42*
48**
* 48" when 4" PRV is used.
** 54" when 4" PRV is used.
Triplex with Tank
8
NOTE: All 750 Series units require 19" door front clearance.
† Always use “HD” dimension for largest pump size specified.
CONSTANT PRESSURE BOOSTER SYSTEMS
760 Series Dimensional Data and Engineering Details
Duplex
760 Series – Dimensions
Duplex
Dim.
Without Tank
With Tank
HB
46
84
HF
36
74
W Max.
48
48
Duplex with Tank
Triplex
760 Series – Dimensions
Triplex
Dim.
Without Tank
With Tank
HB
64
102
HF
54
92
W Max.
48
48
Triplex with Tank
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NOTE: All 760 Series units require 20" door front clearance.
† Always use “HD” dimension for largest pump size specified.
9
CONSTANT PRESSURE BOOSTER SYSTEMS
Engineering Specifications
The contractor shall furnish and install an Aurora® variable
flow (duplex or triplex) constant pressure booster system as
manufactured by Aurora. The unit shall have a total system capacity
of ____ GPM at a discharge head of ____ feet when supplied with
a working suction head of ____ feet. Each pump shall be sized as
indicated for a % of the total flow.
Duplex System
Pump P1 = ____ GPM ____ % system
Pump P2 = ____ GPM ____ % system
Triplex System
Pump P1 = ____ GPM ____ % system
Pump P2 = ____ GPM ____ % system
Pump P3 = ____ GPM ____ % system
Piping and Valves
Each system shall be skid mounted, completely assembled and
wired on a groutable formed steel base ready for installation. All
piping shall be (galvanized schedule 40 pipe). (type K copper). Each
system shall include suction and discharge gate valves for each
pump, combination pressure regulating /non-slam check valves
for each pump, flanged connections for easy disassembly and
pipe supports for the upper manifold. Each system using a current
sensing control panel shall have a thermostat set to shut down
the system during prolonged no-flow conditions; no water is to be
wasted. Suction and discharge gauges shall be provided. Gauges
shall have 3-1/2" faces with large scale numerals and individual
air bleed type valves.
Pumps – 750 Series
The pumps shall be Aurora vertical close-coupled end suction
centrifugal pumps with back pull-out design. The pump shall be
constructed of cast iron casing, vacuum-cast bronze dynamically
balanced impeller, bronze shaft sleeves and bronze case wear
rings. Shaft sealing shall be accomplished by means of a stainless
10
steel mechanical seal. Pumps shall be mounted on a vibration
dampening, cast iron, suction base support elbow.
Pumps – 760 Series
The pumps shall be Aurora horizontal close-coupled end suction
centrifugal pumps with back pullout design. The pump shall be
constructed of cast iron casing, vacuum-cast bronze dynamically
balanced impeller, bronze shaft sleeves and bronze case wear
rings. Shaft sealing shall be accomplished by means of a stainless
steel mechanical seal.
Motors
The motors shall be NEMA type JM, close-coupled, ____ hp, 3 phase,
60 Hertz, ____ volt, totally enclosed fan cooled, high efficiency,
3 phase, ____ Hertz, ____ hp, ____ voltage. Motors shall be selected
so that they do not exceed their nameplate hp rating through their
sequence of operation. The entire system shall be tested at the factory
to assure proper sequencing to meet the design flows and pressure, and
the system components shall be adjusted at the factory.
Control Panel – Pressure Sensing
Each system shall have mounted and wired a single control panel in
a NEMA-1 enclosure with individual magnetic motor starters, ambient
compensated overload relays on each phase, individual motor fuseblocks
with 100 KAIC fuses, main circuit disconnect switch with door interlock,
110 volt control transformer with primary and secondary fuses. The
panel shall be suitable for the horsepower and voltage of the motors.
The control panel will incorporate pressure sensing logic and have the
following features:
•On and off delays factory set to system operating characteristics to
prevent short cycling of pumps.
•Individual pump run lights and selector switches.
•Failure logic and indicating light to activate second pump if lead
pump malfunctions.
•Automatic lead/lag pump alternation.
•Low suction pressure shutdown with alarm light, horn and
reset button.
CONSTANT PRESSURE BOOSTER SYSTEMS
Engineering Specifications
•Automatic restart after alarm condition has returned to normal, with
alarm indicating light remaining lit until manually reset.
•Manually operated “Press-Test” circuit to verify alarm light and horn
are operational. The control panel shall also include the following
indicated functions/features:
____ High system pressure indication and shutdown logic.
____ Low system pressure indication.
____ No flow indication and shutdown logic by temperature switch.
____ No flow indication and shutdown logic by flow switch.
____ Power on light.
____ Low suction pressure remote alarm contacts.
____ Low system pressure remote alarm contacts.
____ High system pressure remote alarm contacts.
____ Lead pump fail remote alarm contacts.
____ Elapsed time hour meter for each pump.
____ Gauge panel.
Control Panel – Current Sensing
is not operating at full demand, the controller will take the lead
pump off the line automatically. If the demand continues to increase
past the capacity of the lag pump, the power management mode will
automatically bring the lead pump back on line. When system demand
decreases to the point that the lead pump can again handle the system
requirement, the control shall automatically sequence to the lead pump
and shut down the lag pump. In instances where a three pump system is
being used, the sequencing shall be the same except that an additional
mode shall be incorporated.
Testing
Pumps shall be hydrostatically tested, followed by a test of all
components as a system approximating field conditions.
Services
The pump manufacturer shall assume unit responsibility and shall
provide a factory trained engineer to supervise initial start-up to ensure
proper operation and to instruct the operating personnel in the operation
and maintenance of the system.
Each system shall have a single panel completely wired in a
NEMA-1 enclosure with individual magnetic motor starters and overload
protection on each phase, individual fuse blocks, main circuit disconnect
switch with door interlock, individual running pilot lights and selector
switches, 11O V control transformer with fuses, minimum run timer on
the lag pump(s), overload relay for malfunction of the lead pump (P1 ).
The panel shall have internal reset buttons and shall be mounted on
support legs fixed directly to the base. The panel shall be UL Listed and
also labeled accordingly.
Power Management
The contractor shall furnish an Aurora® power management mode
control in order to maximize efficient horsepower loading and minimize
energy consumption, in cases where the pumps on the system are not
equally sized, as follows:
When the lead pump is operating at full load, the control will
automatically bring the larger lag pump on the line. If the lag pump
WWW.AURORAPUMP.COM
11
Pumps for Other Services
Variable Speed Systems.
700 Series, Apco-Matic is a solid-state, variable-speed, pumping
system available in simplex, duplex and triplex models. A complete
and perfectly matched system of sensor, controller, motor(s) and
pump(s) provides an all-electrical means of sensing and maintaining
constant pressure by infinite, stepless, pump speed variation to meet
the immediate demand. System response is measured in fractions
of a second. Each Apco-Matic is custom-tailored to the application,
and industry acceptance has made it the overwhelming choice in
variable speed systems. Capacities to 10,000 GPM; heads to 500
feet; temperatures to 275°F; up to 60 hp. (see Bulletin 700.) Aurora®
produces many pumps designed and sized to suit almost all pumping
requirements. Additional information is available through your local
Aurora distributor or branch sales office, or write to Aurora for details.
Apco-Matic DDC
Series 900 – Fire Pump Systems Diesel Engine Driven
See Bulletin 900 for additional details on electric motor and diesel driven fire pump systems.
LIC
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Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice.
A-02-1030 07/23/13 © 2013 Pentair Ltd. All Rights Reserved.
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