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INSTALLATION INSTRUCTIONS
HRO-150 AND HRO-150C
REVERSE OSMOSIS SYSTEM
- NOTICE -
This Manual is prepared for the use of trained Hobart Service
Technicians and should not be used by those not properly
qualified.
This manual is not intended to be all encompassing. If you have
not attended a Hobart Service School for this product, you should
read, in its entirety, the repair procedure you wish to perform to
determine if you have the necessary tools, instruments and skills
required to perform the procedure. Procedures for which you do
not have the necessary tools, instruments and skills should be
performed by a trained Hobart Service Technician.
The reproduction, transfer, sale or other use of this Manual,
without the express written consent of Hobart, is prohibited.
This manual has been provided to you by ITW Food Equipment
Group LLC ("ITW FEG") without charge and remains the property
of ITW FEG, and by accepting this manual you agree that you will
return it to ITW FEG promptly upon its request for such return at
any time in the future.
A product of Hobart Service 701 S. Ridge Ave Troy, OH 45374
F45579 Rev. A (0915)
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HRO-150 AND HRO-150C REVERSE OSMOSIS SYSTEM
TABLE OF CONTENTS
GENERAL .................................................................................................. 3
LIMITED WARRANTY .................................................................................. 3
SPECIFICATIONS ...................................................................................... 4
CARTRIDGE IDENTIFICATION ......................................................................... 4
TOOLS ................................................................................................. 4
INSTALLATION ............................................................................................ 5
PLUMBING ............................................................................................. 5
SYSTEM FLUSH ....................................................................................... 6
INITIAL PERFORMANCE VERIFICATION ............................................................... 6
MAINTENANCE ............................................................................................ 7
NORMAL OPERATION AND MAINTENANCE ........................................................... 7
MAINTENANCE - CARTRIDGE REPLACEMENT ........................................................ 7
© HOBART SERVICE 2015
F45579 Rev. A (0815) Page 2 of 7
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HRO-150 AND HRO-150C REVERSE OSMOSIS SYSTEM - GENERAL
GENERAL
LIMITED WARRANTY
This Limited Warranty extends to the original
purchaser of the system only. This warranty covers all
Manufacturer-supplied items only that prove to be
defective in material, workmanship or factory
preparation. This warranty covers parts only; all labor
is excluded from this warranty, including, but not
limited to, services related to the removal,
replacement, installation, adjustment, maintenance
and/or repair of the unit or its components items.
excludes all non-Manufacturer labor required for any
servicing of the unit, including, but not limited to,
servicing related to installation, adjustment,
maintenance and repair of the unit. This warranty
applies only for the first full calendar year from date of
purchase. The following items are excluded from this
warranty: membranes, filters, O-rings, and all other
parts or components that require regular replacement
as a result of ordinary usage.
Disclaimers: This Limited Warranty applies only if the
system is installed, used and maintained in
compliance with all instructions and requirements
enclosed with the system. This warranty will be void
for failure to observe the following conditions:
1. The system is to be used with potable water from
a municipal water system.
2. Feed water pressure to the unit is no less than 40
PSI and no greater than 80 PSI.
3. The system is to be used on water supplies with
chlorine concentrations of 0.1 mg/L (ppm) or
less.
4. Feed water temperature to the unit must be no
less than 40°F and no more than 100°F.
5. Total dissolved solids in feed water must be less
than 2,000 mg/L (ppm).
6. Feed water must have a pH between 4 and 8.
7. Turbidity must be less than 1.0 NTU.
8. SDI must be less than 5.
9. Feed water must be completely free of iron,
manganese or hydrogen sulfide.
Do not use with water that is
microbiologically unsafe or of unknown quality without
adequate disinfection before or after the system.
The Manufacturer does not know the characteristics
of your water supply. The quality of water supplies
may vary seasonably or over a period of time. Your
water usage may vary as well. Water characteristics
can also change if the drinking water appliance is
moved to a new location. The Manufacturer assumes
no liability for the determination of the proper
equipment necessary to meet your requirements, and
we do not authorize others to assume such obligation
on our behalf.
This Limited Warranty does not cover any
Manufacturer-supplied items that are defective as a
result of the use of improper parts, equipment or
materials. This warranty does not cover alterations or
modifications of the unit, or failure of a unit caused by
such alterations and modifications.
This Limited Warranty does not cover malfunctions of
the unit due to tampering, misuse, alteration, lack of
regular maintenance, misapplication, fouling due to
hydrogen sulfide, manganese or iron, scaling from
excessive hardness, turbidity greater than 1.0 NTU,
Silt Density Index (SDI) greater than 5.0 SDI, or
excessive membrane hydrolysis due to chlorine levels
in excess of 1.0 mg/L (ppm). In addition, damage to
the unit due to fire, accident, negligence, act of God,
or events beyond the control of the Manufacturer are
not covered by this warranty.
Incidental and Consequential Damages
Limitation: The Manufacturer will not be responsible
for any incidental or consequential damages as a
result of the failure of this unit to comply with express
or implied warranties or any defect in the unit,
including but not limited to, lost time, inconvenience,
damage to personal property, loss of revenue,
commercial losses, postage, travel, telephone
expenditures, or other losses of this nature. Some
states do not allow the exclusion or limitation of
incidental or consequential damages, so this
exclusion may not apply to you.
Owner’s Warranty Responsibilities: As a condition
of this Limited Warranty, the owner must ensure
periodic maintenance of the system is performed as
described in the literature enclosed with the system.
Neglect, improper maintenance, abuse, modification
or alteration of the unit will invalidate this Warranty.
Should your unit develop a defect or otherwise fail to
perform in accordance with this warranty, you should
contact the retailer from whom the product was
originally purchased.
Implied Warranties: The implied at-law warranties of
merchantability and fitness for a particular purpose
shall terminate on the date one year after the date of
purchase. Note: some states do not allow limitations
Page 3 of 7 F45579 Rev. A (0815)
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HRO-150 AND HRO-150C REVERSE OSMOSIS SYSTEM - GENERAL
on how long an implied warranty lasts, so the above
limitations may not apply to you.
Other Rights: This Warranty gives you specific legal
rights and you may also have other rights which vary
from state to state.
SPECIFICATIONS
System Specifications
Model Number HRO-150, HRO-150C
Capacity* 150 gpd Membrane
Membrane (2) Encapsulated cartridges
(Prefilter (option) External chloramine filter
Postfilter Calcite, GAC
Pump, permeate 90% of feed pressure
Dimensions
12”W x 6.5”D x 14”H Weight
(lbs) 10.5
CARTRIDGE IDENTIFICATION
* Based on membrane performance after 24 hours
at 77°F (25°C), 500 ppm TDS, and 65 psig, with
discharge to atmosphere.
Operating Specifications
Feed Water Municipal
Incoming Feed Pressure 40-80 psi
Operating Temperature 40°F - 100°F
Max Chlorine (continuous) <0.1 ppm
Max Total Dissolved Solids 2,000 ppm
Hardness <15 grains
Silt Density Index <5
SDI Turbidity <1 NTU
pH Range 4-8
Iron, Hydrogen Sulfide or
Manganese
0 ppm
Fig. 1
HRO-150 PART NUMBER
Chloramines reduction
prefilter cartridge
(HRO-150C)
A - Calcite, GAC Postfilter,
blue cap
B - Reverse Osmosis
Membrane, 75 gpd, white
cap
F45579 Rev. A (0815) Page 4 of 7
00-913157-00102
00-913157-00106
00-913157-00105
HRO-150 PART NUMBER
C - Reverse Osmosis
Membrane, 75 gpd, white
cap
00-913157-00105
TOOLS
• Standard set of tools.
• TDS Meter Part # 00-913041
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HRO-150 AND HRO-150C REVERSE OSMOSIS SYSTEM - INSTALLATION
INSTALLATION
INSTALLATION REQUIREMENTS
The Hobart Service HRO-150 systems are to be used on potable water only. If there is a hot water heater, it must
have a check valve to prevent hot water from entering the system. The user must ensure that the feed water to the
system is microbiologically safe and meets the operating specifications outlined in the specifications on page 3. If
your water analysis shows levels in excess of the maximums, contact Hobart Service for pretreatment
recommendations. Install the system where it will be protected from extreme heat, cold and precipitation. Always
abide by local plumbing codes when installing the system. If the feed water is drawn from a non-pressurized source,
contact Hobart Service for options.
PLUMBING
1. Install prefiltration prior to the system.
2. Connect a 1/4" line from the prefilter to the green
bulkhead connector marked FEED.
Fig. 2
3. Connect a 1/4" line from the yellow bulkhead
connector marked DRAIN to the drain.
4. Pressurized storage tank - Connect a 3/8” line
from the grey bulkhead connector marked TANK
to the pressurized storage tank.
5. Install a 3/8" tee connector in the tank line for
point-of-use dispensing.
6. Bypass Installation Fig. 3
A. Close the following valves:
• Feed Bypass Valve
• Product Bypass Valve
• Tank Valve
7. Open Main bypass valve.
Page 5 of 7 F45579 Rev. A (0815)
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HRO-150 AND HRO-150C REVERSE OSMOSIS SYSTEM - INSTALLATION
SYSTEM FLUSH
1. Before the system can be used for water
production it must be adequately flushed. Each
storage tank is dosed with a small amount of
powdered sanitizer before shipment, typically a
chlorinating agent, in order to ensure tank
internal cleanliness. Also, the carbon filter
cartridge will release a small amount of carbon
fines during the first tankful of flow. This flushing
procedure will allow any sanitizer or carbon fines
to pass from the system.
2. Check all tubing connections to ensure they are
firmly seated.
A. Check to see that the cartridge retainer clips
are properly engaged and locked.
Failure to keep the retaining clip in place
will result in accidental leaks and flooding.
3. Turn on the water supply and check for leaks.
4. Allow the system to run and the tank to fill.
5. When the tank is full, the pump will shut-off.
Leave the tank undisturbed for at least 8 hours to
ensure proper sanitization.
6. Within one to two hours after initial application of
water pressure, check again for leaks especially
at the tank, faucet tubing and connectors.
Fig. 3
NOTE: These parts will not see full pressure until
approximately 2 hours after the system is activated.
7. After 8 hours has elapsed, open the product
water valve or dispensing faucet fully to allow the
product water to run out to drain at maximum
flow. The initial discharge will be dark with the
bulk of the carbon particle wash out. There may
also be the scent of chlorinated water from the
sanitizing agent. When the flow has diminished
to a fast drip or small stream, close the
dispensing faucet or valve. If a chlorine scent
persists, refill the tank and flush to drain.
INITIAL PERFORMANCE
VERIFICATION
After initial flush, TDS data should be taken and
compared to factory test data. Some deviations may
occur due to differences in feed water TDS and
temperature.
Total Dissolved Solids (TDS) Rejection Test
1. Use a TDS meter to measure the TDS in both the
feed and product water.
2. Calculate percent rejection using the formula
below. Rejection should be 85% or better.
(Feed TDS - Product TDS) / (Feed TDS) x 100 =
% Rejection
F45579 Rev. A (0815) Page 6 of 7
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HRO-150 AND HRO-150C REVERSE OSMOSIS SYSTEM - MAINTENANCE
MAINTENANCE
NORMAL OPERATION AND
MAINTENANCE
Daily System Check
Incoming water supply pressure, temperature,
and TDS may vary from day to day, therefore,
production rates may vary as well. Higher
pressure and temperatures (within the specified
range) will correlate with higher production rates.
Product water TDS will vary with feed water TDS.
Scheduled Maintenance
Set a regular schedule for testing the TDS of the
product water and replace the membrane when
rejection falls below acceptable levels.
Peripheral equipment such as prefilters, postfilters and tanks must also be periodically
checked or replaced in order to prevent damage
to the system.
MAINTENANCE - CARTRIDGE
REPLACEMENT
10. Open product water valve or dispensing faucet.
11. Close when water starts running.
12. Observe the system for leaks, especially at newly
replaced cartridge.
13. Open the tank shut-off valve.
14. If the replaced cartridge was a carbon postfilter
or a membrane, the system should be flushed at
least once as described in the SYSTEM
FLUSH.
1. Close the feed water valve.
2. Close the tank shut-off valve.
3. Open the product water valve or dispensing
faucet to relieve system pressure.
4. Close when flow has stopped.
5. Remove the retaining clip from the cartridge.
6. Pull the cartridge off evenly at the top and bottom.
A. Dispose of used cartridge.
7. Install the new cartridge.
A. Gently rock from side to side as necessary
until the cartridge tubes are properly
engaged in the unit connectors.
8. Install the retaining clip, ensuring the slide locks
snap into place in the slots.
A. If the clip does not snap easily into place
through the slots it means the cartridge is
not fully inserted into the connectors. Press
the top or bottom of the cartridge to engage
the connector so that it snaps fully into
place.
Failure to properly install the retaining clip
will result in accidental leaks and flooding.
9. Turn on the feed water.
Page 7 of 7 F45579 Rev. A (0815)
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