Liquid Ring Water Sealed Partial Recirculating
Continuous On Demand Vacuum System
(See page 3 for information to fill in the blanks)
Ohio Medical Healthcair® Series Model ______ "Continuous On Demand" packaged system. The ___________, partial
recirculating, medical vacuum system shall consist of ____ electric motor driven positive displacement non-pulsating liquid ring
vacuum pumps, _______ ASME receiver and an Underwriters Laboratories listed ______ electrical control system mounted
in a NEMA 12 enclosure. The components shall be assembled on a
____ to accommodate most existing doorways. The
system shall include interconnecting piping and wiring to provide a functional operating package with applicable electrical and
plumbing connections at the installation site. Each liquid ring vacuum pump shall have a cast iron body, bronze impeller, and
mechanical seals. The packaged unit shall be factory tested prior to shipment and warranted for 24 months from date of
shipment.
The capacity of each pump shall be _____ SCFM @ 19” Hg, when direct driven by a ____ HP, TEFC motor, operating on
___ Volts-60 Hz. Each pump will require _____ GPM of 59oF cooling water.
Pump suction accessories shall include an inlet check valve, isolation valve and inlet flexible connector. Pump discharge
accessories shall include a discharge air/water separator constructed of high density polyethylene that also serves as the partial
recirculation reservoir (Models LP30 and 40 utilize a steel water/air separator). The recirculation reservoir shall have a two
station combination level sensor/ sight glass to maintain proper liquid level.
Recirculation liquid control will be interactive through a temperature sensor, with a range of 75F to 90F. Each recirculation liquid
line shall include a strainer and isolation/flow regulation valve.
The make-up water lines shall include a strainer, regulating valve, solenoid valve with manual priming valve and flexible
connector.
The pump suction ports shall be manifolded to a _______, ______ gallon, ASME receiver rated for full vacuum. The receiver
is equipped with a source isolation valve, sight glass, vacuum gauge, manual drain, valved by-pass and source flexible
connector. The pump discharge separator vents shall be manifolded, and a flexible connector shall be provided for job site
installation to facilitate connection of vent piping to the exterior of the building.
The Underwriters Laboratories Listed ______________ electrical motor control system shall be of a fuseless design in a NEMA
12 (dustproof) enclosure. The "Continuous On Demand" feature shall stop the operation of the motors during periods of low or
no demand. The controls include individual self protected combination motor controls with short circuit, single phase and thermal
overload protection, individual 120 volt control circuit transformers with fuseless primary and secondary protection, pressure
transmitters, and an electronic controller to automatically switch the operating sequence of the vacuum pumps. The cabinet door
shall have an HMI (Human Machine Interface) system status display to include system pressure, pump operation, accumulated
time, maintenance interval, fault conditions and silence button; lighted Hand-Off-Automatic selector switches and safety
disconnect operating handles.
All required local alarm functions shall be integrated into the packaged system. The circuitry shall be designed so the audib le
signal can be silenced and the visual indicator will remain until the fault has been cleared and the reset button actuated. Local
alarm functions shall be provided for reserve pump in use (lag alarm). Dry contacts are furnished for remote (master) alarm
signals.
Factory start-up supervision will be provided by a qualified technical representative.
Accessories included for job site installation are inlet and discharge flexible connectors, source isolation valve, vibration mounting
pads and touch-up paint.
COMMENTS:
1.
2.
3.
4.
5.
6.
7.
8.
Ohio Medical Corporation’s proposal is based on our interpretation of the plans and specifications. Any modification to
the proposal may result in a price adjustment.
For motor protection, the equipment should not be operated in an ambient temperature above 104 oF.
Equipment conforms to the National Electrical Code.
The system shall meet NFPA 99 2005 requirements.
For installations above sea level, consult Ohio Medical Corporation.
Actual make up water required may be less than shown based upon operating conditions.
The SCFM capacity is calculated at 19" Hg. and based upon a service water temperature of 59°F. As the water
temperature rises, the SCFM capacity will decrease. If the fluid temperature is higher than 59 oF, consult Ohio Medical for
the actual pump performance.
Customer Connection: vacuum inlet, reservoir vent, reservoir overflow, make up water inlet and electrical
connections.
Overall Length
(Inches)
Overall Width
(Inches)
Overall Height
(Inches)
Weight
1370
21.6
5
1.1
120
21.6
92
46
70
1600
33.7
7.5
1.6
200
33.7
92
46
76
2050
LP10B-T2
47.5
10
2.0
200
47.5
92
56
76
2340
LP15B-T2
75.5
15
2.9
200
75.5
92
56
76
2630
100.7
20
3.3
240
100.7
114
64
86
3300
137.4
30
4.9
240
137.4
130
70
100
4300
199.6
40
6.2
240
199.6
130
70
100
4600
100.7
20
3.3
240
201.4
150
64
86
4600
137.4
30
4.9
240
274.8
176
70
100
6260
199.6
40
6.2
240
399.2
176
70
100
6700
33.7
7.5
1.6
120
33.7
70
54
92
2045
47.5
10
2.0
120
47.5
70
64
94
2380
75.5
15
2.9
120
75.5
70
64
94
2670
47.5
10
2.0
240
95
114
64
94
3940
75.5
15
2.9
240
151
114
64
94
4370
33.7
7.5
1.6
240
101.1
114
64
92
4200
47.5
10
2.0
240
142.5
114
64
92
4900
75.5
15
2.9
240
226.5
114
64
94
5500
Model
Receiver Size
(Gallons)
66
Average makeup water
required @
19” Hg (GPM)
40
HP
Per Pump
88
SCFM @ 19" Hg
Each
11.7
Base
Configuration
120
Panel
Configuration
0.7

Receiver Style
3

Qty of Motors
11.7
System
Configuration
Design
Capacity SCFM
@ 19" Hg
LIQUID RING WATER SEALED PARTIAL RECIRCULATING
VACUUM SYSTEMS








LP3B-T2
LP5B-T2
LP75B-T2
Tank
Mounted
Duplex
Two Horizontal
Duplex
Receiver
LP20B-B2
LP30B-B2
Base
Mounted
Duplex
Two
Vertical
Duplex
Heavy Duty
Modular
Skid Base
LP40B-B2
LP20B-B3
LP30B-B3
Base
Mounted Three Vertical
Triplex
Triplex
Heavy Duty
Modular
Skid Base
LP40B-B3
LP75B-ST2
Stack
LP10B-ST2 Mounted
Duplex
LP15B-ST2
Two
Vertical
Duplex
LP10B-ST3
Stack
Mounted Three Vertical
LP15B-ST3 Triplex
LP75B-ST4
Stack
LP10B-ST4 Mounted Four
Quaruplex
LP15B-ST4
Triplex
Heavy Duty
Modular
Stacked
Base
Heavy Duty
Modular
Stacked
Base
Heavy Duty
Modular
Vertical Quadruplex
Stacked
Base
COMMENTS
1.
2.
3.
4.
5.
6.
7.
Design capacity values should correspond with "Calculated Peak Demand". This will allow for the reserve pump as is
required per NFPA for Level 1 installations.
For motor protection, the equipment should not be operated in an ambient temperature above 104 oF.
For installations above sea level, consult Ohio Medical Corporation
System weight is approximate and without crate.
Actual make up water required may be less than shown based upon operating conditions.
The SCFM capacity is calculated at 19” Hg, based upon a service water temperature of 59 oF. As the water temperature
increases, the SCFM capacity will decrease. If the fluid temperature is higher than 59 oF, consult Ohio medical for actual
pump performance.
Customer Connections: vacuum inlet, reservoir vent, reservoir overflow, make up water inlet and electrical connections.