Condair RO-U, RO Series Installation, Operation And Maintenance Manual

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IMPORTANT! Read and save these instructions. This manual to be left with the equipment.

2594385_A_EN_1811_RO_IOM

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Reverse Osmosis System

RO-U

Humidification and Evaporative Cooling

Page 2

Thank you for choosing Condair

Installation date (DD/ MM / YYYY):

Commissioning date (DD / MM / YYYY):

Site:

Model:

Serial number:

Proprietary Notice

This document and the information disclosed herein are proprietary data of Condair Ltd. Neither this document, nor the information contained herein shall be reproduced, used, or disclosed to others without the written authorization of Condair Ltd., except to the extent required for installation, operation or maintenance of the customer's equipment.

Liability Notice

Condair Ltd. does not accept any liability due to incorrect installation, maintenance or operation of the equipment, or due to the use of parts/components/equipment that are not authorized by Condair Ltd..

Technical modification rights reserved.

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CONTENTS

1 Introduction 5

1.1 Before You Start 5

1.2 General 5

1.2.1 Limitations of the Manual 5

1.2.2 Symbols Used in This Manual 5

1.2.3 Storage of Manual 5

1.2.4 Available Manuals and Languages 6

1.3 Receiving and Storage 6

1.3.1 Inspection 6

1.3.2 Storage, Packaging, and Transportation 6

1.4 Safety Precautions 6

1.5 Compliance 7

2 For Your Safety 8

3 Hygiene 11

3.1 Important Notes on Hygiene 11

3.2 Hygiene Risk Management 11

3.2.1 Guidelines to Keep a Clean System and Prevent Micro-organism Growth 11

3.3 Risk Monitoring and Assessment 12

4 Product Description 13

4.1 General Description 13

4.1.1 Buffer tank, Fitting, and Wall Bracket 14

4.2 Model Designation 15

4.3 Functional Description 15

4.4 Options 17

4.5 Accessories 18

5 Product Specifications 19

5.1 Technical Data 19

5.1.1 Capacity 19

5.1.2 Weights 19

5.1.3 Dimensions 19

5.2 Operating Data 19

5.2.1 Water Quality 19

5.2.2 Temperature 19

5.2.3 Power 20

6 Installation and Planning 21

6.1 General 21

6.1.1 Installation Overview 22

6.2 Location Requirements 23

6.3 Clearance Requirements 23

6.4 Site Requirements 24

6.4.1 Water Supply Requirements 24

6.4.2 Drainage Requirements 27

6.4.3 Power Supply Requirements 27

6.5 Installation 28

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6.5.1 Safety 28

6.5.2 Mounting the Reverse Osmosis System 28

6.5.3 Connecting the Water Supply 28

6.5.3.1 (Optional) DI System 29

6.5.4 Connecting the Drain Line 31

6.5.5 Installing the Electrical Connections 31

7 Operation 32

7.1 General 32

7.2 Starting Up 33

7.2.1 Start Up Procedure 33

7.3 Shutting Down the Unit 34

8 Maintenance 35

8.1 General 35

8.2 Cleaning and Disinfecting 35

8.3 Maintenance List 36

8.4 Maintenance Procedures 37

8.4.1 Adjusting the Buffer Tank Pressure 37

8.4.2 Replacing the RO-U Filter 37

8.4.3 Testing the Permeate 38

8.4.4 Cleaning-RO-Membrane 38

9 Troubleshooting 39

9.1 General 39

9.2 General Troubleshooting 39

10 Spare Parts List: Reverse Osmosis System 42

11 Commissioning 44

11.1 General 44

11.2 First-time Commissioning 44

12 Decommissioning 45

12.1 General 45

12.2 Removing Unit from Service 45

12.3 Disposing or Recycling the Unit 45

A Appendix: Installation Checklist 47

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1 Introduction

1.1 Before You Start

Thank you for purchasing the Reverse Osmosis System.

The Reverse Osmosis System incorporates the latest technical advances and meets recognized safety standards. Improper use of the Reverse Osmosis System may result in danger to the user or third parties, and/or damage to property.

To ensure safe, proper, and efficient operation of the Reverse Osmosis System, please observe and comply with all information and safety instructions contained in this manual, as well as all relevant documentation of components of the installed humidification system.

If you have additional questions, please contact your Condair representative. They will be glad to assist you.

1.2 General

1.2.1 Limitations of the Manual

The subject of this manual is the Reverse Osmosis System. It is intended as a supplement to the installation, operation and maintenance manuals.

This manual is restricted to the installation, operation, and maintenance of the Reverse Osmosis System. This manual is intended for well trained personnel who are suitably qualified for their respective tasks.

1.2.2 Symbols Used in This Manual

CAUTION!

The catchword "CAUTION" in conjunction with the general caution symbol is used to provide safety instructions that, if neglected, may cause damage and/or malfunction of the unit or damage to property.

WARNING!

The catchword "WARNING" in conjunction with the general warning symbol is used to provide safety instructions that, if neglected, may cause injury to personnel. Other specific warning symbols may also be used in place of the general symbol.

Danger!

The catchword "DANGER" in conjunction with the general danger symbol is used to provide safety instructions that, if neglected, may cause severe injury to personnel or even death. Other specific danger symbols may also be used in place of the general symbol.

1.2.3 Storage of Manual

Keep this manual in a place where it is safe and readily accessible. If the equipment is moved to another location, please ensure that it remains with the equipment.

If the manual is lost or misplaced, please contact your Condair representative for a replacement.

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1.2.4 Available Manuals and Languages

Table 1: Document (Part) Numbers and Languages of Available Manuals

Installatio n

Manual

Operation and

Maintenan ce

Manual

Installatio n,

Operation, and

Maintenan ce

Manual

Spare Parts

List

Engineering

Manual

Ultrasonic Humidifier US

Reverse Osmosis System RO-U

2588786_A_EN_

1811_US_IM

— —

2588787_A_EN_

1811_US_OM

1.3 Receiving and Storage

1.3.1 Inspection

After receiving the shipment, inspect the goods as follows:

l Inspect the shipping boxes for damage. Report any shipping box damages to the shipping com-

pany without delay.

l Check the goods against the packing slip to ensure that all items have been delivered. Report

any shortages to your Condair representative within 48 hours of receipt of the goods. Condair does not assume responsibilities for any shortages beyond this period.

l Unpack the parts/components and check for any damage. If parts/components are damaged,

notify the shipping company immediately.

l Verify the model type on the specification label to ensure that it is suitable for your installation.

Refer to "Model Designation" on page15.

1.3.2 Storage, Packaging, and Transportation

—

2594385_A_EN_

1811_RO_IOM

2588788_A_EN_

1811_US_SPL

— —

—

Storage

Store the Resistive Steam Humidifier in its original packaging inside a protected area that meets the following requirements until it is installed, or if it needs to be stored for an extended period of time:

l Room temperature: 5 to 40 °C (41 to 104 °F)

l Room humidity: 10 to 95% RH (non-condensing)

Transportation

For optimum protection always transport the unit and components in their original packaging, and use appropriate lifting/transporting devices.

Packaging

Keep the original packaging of the unit/components for later use.

If the packaging needs to be disposed, observe local regulations on waste disposal. Please recycle packaging where possible.

1.4 Safety Precautions

Regard all safety precautions described in this manual.

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For more information, refer to "For Your Safety" on page8.

1.5 Compliance

Follow all local guidelines and regulations regarding the installation and operation of the unit; this includes (and not limited to) mounting, plumbing, water, gas, ventilation, and electrical connections.

Please consult your local Condair representative to learn more.

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2 For Your Safety

General

Every person who is tasked with the installation, operation and/or maintenance of the Reverse Osmosis System must read and understand this manual, as well as any respective installation, operation and/or maintenance manuals before performing any work. Knowing and understanding the contents of these manuals is a basic requirement for protecting personnel against any kind of danger, preventing faulty operation, and operating the unit safely and correctly.

All labels, signs and markings applied to the Reverse Osmosis System must be observed and kept in a readable state.

Personnel Qualifications

All procedures described in this document must only be performed by personnel who are adequately qualified, familiar with the unit, well trained, and are authorized by the customer.

For safety and warranty reasons, any activity beyond the scope of this manual must only be performed by qualified personnel authorized by Condair.

All personnel working with the Reverse Osmosis System unit must be familiar with, and comply with the appropriate regulations on workplace safety and prevention of accidents.

Intended Use

The is intended exclusively for air humidification using a Condair-approved within specified operating conditions. Refer to "Technical Data" on page19 for details. Any other type of application, without the express written consent of Condair, is considered to be NOT conforming to its intended purpose, and may lead to dangerous operation and will void the warranty.

In order to operate the equipment in the intended manner all information contained in this manual, in particular the safety instructions, must be observed closely.

Safety Precautions that Must be Observed

DANGER!

Risk of electric shock!

The Reverse Osmosis System is 24 VAC powered. Live parts may be exposed when the access panels or doors are removed. Touching live parts may cause severe injury or even death.

Prevention: The Reverse Osmosis System must be connected to the humidifier only after all mounting

and installation work has been completed and checked for correct workmanship, and the access panels/doors to the humidifier are closed and fastened securely.

Only qualified personnel should perform maintenance or repairs on the unit.

Follow any lockout procedures when servicing the unit.

DANGER!

Poorly maintained RO-U systems may be hazardous.

Poor maintenance of the Reverse Osmosis System poses a health risk to spaces humidified by the Ultrasonic Humidifier. When adequately operated or poorly maintained, micro-organisms that cause disease, such as Legionnaire's, may grow in the water system and in the humidifier which dispel the micro-organisms into the air.

Prevention: Read, understand, and follow maintenance guidelines to ensure the humidification sys-

tem remains safe. Ensure that the unit is cleaned and disinfected, as directed in this manual, and avoid shutting off the unit (max. 48 hours). If the unit has been off for 48 hours or more, disinfect and flush the system thoroughly before humidifying the space with the Ultrasonic Humidifier.

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WARNING!

Do NOT leave the unit without power. Risk of contamination.

Do NOT leave the unit unpowered for more than 48 hours, or else a total system disinfect will be required. Without power, the system will not flush properly, resulting in standing water and conditions that may promote the growth of micro-organisms.

Prevention: Leave your unit powered on. If you do not need humidification during the 48 hours, set

the humidifier to standby or set the demand to 0.

WARNING!

Risk of contamination.

Do NOT use oil, grease, glue, Teflon, silicon, O-ring lubrication, etc. when assembling pipes or hose connections. All of the above products can act as food for bacteria, posing health risks.

Prevention: For lubricant, use dish soap. Wash hands and wear clean gloves while assembling parts

in direct contact with water. Keep dust covers on pipes and hoses until assembly.

WARNING!

Water from RO-U systems may cause metals to corrode quickly.

Water produced from a Reverse Osmosis System is aggressive and can cause some metals to quickly corrode. The RO-U system should always be connected to piping and equipment that is suitable to handle RO water.

Prevention: Read, understand, and follow maintenance guidelines to ensure the humidification sys-

tem remains safe.

CAUTION!

The RO-U System contains pressurized water.

Hoses in the RO-U System contain pressurized water that may spray if the hose connections are loose or there is a leak.

Prevention: Do not re-tighten or unscrew hoses while the system is pressurized. Test for leaks and

replace broken hoses.

CAUTION!

Do NOT fasten the RO-U System, including the tank, hoses, and pipes to vibrating surfaces.

Preventing Unsafe Operation

All personnel working with the must immediately report to the customer any alterations or changes to the unit that may affect safety, and secure the unit against accidental power-up.

If it is suspected that the unit cannot be operated safely for any of the reasons listed below, shut it down immediately.

Alterations and changes that may affect safe operation include:

l damage to the unit

l loose or damaged electrical connections

l improper operation

l leaks in the distribution system

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Modifications to the Unit Prohibited

Modifications are NOT permitted on the Reverse Osmosis System without the express written consent

of Condair.

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3 Hygiene

3.1 Important Notes on Hygiene

Observe the local health and safety executive's technical guidance on the control of Legionella in water systems.

The user is responsible to ensure that the water system complies with local regulations, bylaws, and guidelines (such as the HSE ACoP L8, VDI 6022, ISO 22000, HACCP, or equivalent). If inadequately maintained, water systems, of which any humidifier is a part, can support the growth of microorganisms, including the bacterium responsible for Legionnaires' disease.

Any risks or hazards relating to the system, including during installation and maintenance, should be identified by a competent health and safety representative who is responsible for introducing effective control measures.

3.2 Hygiene Risk Management

Cold water humidification presents the risk of spreading pathogenic microorganisms into the air. The Ultrasonic Humidifier and Ultrasonic Blower Pack distribute tiny water droplets (mist) that are blown into the space before being absorbed into the air. If the mist was contaminated before leaving the unit and then evaporates, these contaminants are deposited onto surfaces in the space, or are otherwise inhaled or redistributed into the ventilation system.

Pathogens include, and are not limited to, Legionella, E. coli, and viruses, and may originate from contaminated water, air, and equipment.

Regular cleaning and disinfecting is required to reduce health risks. Refer to "Hygiene Risk Man-

agement" above for more information on managing hygiene hazards.

Follow all safety precautions and local regulations. Refer to "For Your Safety" on page8.

There are multiple points in the humidification system where a contamination can occur. It is the responsibility of the customer and of Condair to ensure that health hazards due to contamination are reduced to acceptable levels. The use of a hygiene risk assessor is recommended.

Regularly clean and maintain the humidifier and its components, and do NOT miss or ignore the warnings in this manual and service messages displayed on the humidifier.

Supply Air and Water

Pathogens can originate from the water supply, such as a tank or water line. It is important that standing water in the tank or in the water line is flushed frequently to prevent the buildup of contaminants, and the water is filtered and treated.

Pathogens may also enter the humidification system through the ventilation system or from within the humidifier space. A fan blows air out of the water reservoir into flexible tubes, and further into a blower pack and into the atmosphere. Contaminated air can join the mist, so it is recommended to use air filters in the ventilation system, in the humidifier, and in the Ultrasonic Blower Pack. Ensure to use the supplied air filters at all times and replace them regularly (as recommended in the Ultrasonic Humidifier Maintenance and Operation Manual).

3.2.1 Guidelines to Keep a Clean System and Prevent Micro-organism Growth

l Perform a risk assessment of the water system using a competent person, and implement an

appropriate monitoring and control program.

l Connect a RO system to a clean, potable main water supply.

l Ensure that the system is cleaned and/or flushed regularly.

l Ensure that the buffer tank is clean and sterile before use.

l Enter a service contract that suits the needs of the company.

l Stop the system if polluted drinking water is found in the area.

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l Avoid water temperatures above 20 °C (68 °F). Temperatures between 20-60 °C (68-140 °F)

favor the growth of Legionella.

l Do not stop the system unless it is faulty or leaking (to avoid water stagnation).

l If the power to the system is interrupted (such that the unit fails to flush or drain) for more than 48

hours, complete a total system disinfection.

l Refrain from closing sections of the system, unless there is a leakage or fault (to avoid water

stagnation).

l Disinfect at least once per year, and after every maintenance or repair.

l Analyze the water and test for harmful bacteria at least once per year.

l Conduct follow-up measurements until the system is clean if bacteria has been detected in the

system.

The Condair service team can help with expert technicians who can provide:

l Bacteriological troubleshooting on-site*.

l Cleaning and disinfecting.

l Preventative maintenance.

l Repair and fault finding.

l Training and guidance.

Note: * Condair uses a quick method for measuring bacterial activity in the water with the use of BactiQuant (BQ). Once the water sample has been taken, the bacteriological quality of the water is read within 30 minutes, and the Condair service team will disinfect the system if necessary.

Please contact your local Condair representative for further information about our services.

3.3 Risk Monitoring and Assessment

Water hygiene assessments must be performed at the site to determine the risk and severity of hygiene hazards that affect the health and safety of the public. Performing a risk assessment with regular monitoring will allow procedures to be adjusted.

Ensure that the person conducting the assessment is qualified.

A typical assessment inspects the following:

l Supply water quality. Refer to "Technical Data" on page19.

l Environment around the humidifier.

l Maintenance procedures. Refer to .

l Water pre-treatment options (such as using UV light, using reverse osmosis or deionized water,

etc.).

Proper maintenance procedures along with recommended site controls will help ensure compliance to local regulations and protect the public.

It is recommended to monitor the humidification system weekly, and then monthly once satisfactory levels are maintained.

Ensure that the results of every assessment is recorded.

IMPORTANT! Failure to make adequate provision against the outbreak of disease, such as Legionnaires' disease, may cause fatalities, illness, and liabilities.

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4 Product Description

4.1 General Description

The use of RO, de-mineralized (permeated) water is recommended for use with Nortec Ultrasonic Humidifier systems for the following reasons:

l Prologues lifetime of transducers. Any minerals, salts, sediment, and pathogens that enter the

humidifier will pollute the water reservoir. The integrated flushing function will delay this process, but will not prevent it entirely. Depending on the quality of the added water, the water reservoir will eventually become blocked. As a result, the energy of the transducers in the humidifier will no longer be effective, and they will wear more quickly. In addition, the float switch could transmit the wrong information to the electronics system and cause damage to the system.

l Reduces dusts and deposits. The minerals and salts (such as calcium) present in the water will

deposit onto surfaces in spaces being humidified by the Nortec Ultrasonic Humidifier.

l Reduces bacterial growth. Bacteria, such as Legionella, could multiply in the water in the buffer

tank and would constitute a health hazard.

l Reduces maintenance.

The Nortec RO-U System is fitted with a high-grade (Dow Chemical) membrane. Working on the principle of Reverse Osmosis (R.O.), the membrane only allows water molecules to pass through. A flushing system prevents clogging, increases the service life of the membrane, and improves performance. Flushing occurs as long as the unit is powered, and will occur every 24 hours.

Systems can be supplied with a capacity of 20 kg/h at 10 °C (44 lbs per hour at 50 °F) and the capacity is dependent on the water pressure. Two preliminary filters are positioned ahead of the membrane; a 5 µm pre-filter and an active carbon filter.

An electric booster pump in the Nortec RO-U System increases the pressure to compensate for low water pressure or high demand.

The water shut off valve is automatic and prevents water from being wasted when the system flushes.

A permeate pump (Water Saver) and Water Safe Guard is included with the Nortec RO-U system. The pump increases the efficiency of the flushing and reduces water use. The water Safe Guard continuously monitors the membrane function and indicates when to replace a Nortec RO-U membrane.

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Figure 1 - Nortec RO-U Overview (with Buffer Tank)

1. RO membrane

2. Booster Pump

3. Buffer tank

4. Shut-offvalve

5. RO membrane

6. Source water inlet

7. Carbon filter

8. Sediment filter

9. Fuse (inside)

10. Wall transformer

11. Water Safe Guard

12. Pressure Switch

13. Water outlet (de-mineralized, to buffer tank)

14. Permeate pump

4.1.1 Buffer tank, Fitting, and Wall Bracket

A buffer tank and T-piece connector is included in the delivery. The buffer tank contains a polymer bag that stores the permeated water, and will supply additional water whenever the humidifier is consuming more water than the RO-U System is able to supply, such as during flushing and filling (at any other time, the system supplies more than the required consumption and any excess water will be used to refill the tank).

The buffer tank and T-piece connector should be fitted in the supply line to the humidifier.

Note: The space between the polymer bag and the tank contains pressurized air. The air pressure between the bag and the shell of the buffer tank should greater than the RO-U water in the bag.

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4.2 Model Designation

The specification label on the side of the RO-U system shows the model type, serial number, and other ratings. Refer to the figure below. The label is located on the Water Safe Guard.

Type Designation

Serial number S/N: ?????????? EP RO-U 44 Article #

Model: RO-U 44

Production kg/lb / day at 10 °C / 50 °F 240 / 530 Production kg/lb / day at 25 °C / 77 °F 750 / 1653 Rejection salts (%) 98 Production compared to feedwater (%) 20 - 35 Max. ambient temperature (°C / °F) 45 / 112 Energy consumption (W) 25 PSI 15

4.3 Functional Description

Inlet water enters the Reverse Osmosis System and first passes through two filters. The first is the sediment filter that removes large particles from the source water before it passes through the active carbon filter.

Filtered water then enters the booster pump and is pressurized before it passes through the Water Safe Guard and the water shut off valve.

The Water Safe Guard measures the relative impurities between the filtered water and the permeated, RO water from the RO membrane. This is represented by the X in the equation below.

X =

µS permeate

µS water supply (filtered)

rev.1.2 Revision #

1750 Month / Year

x 100%

RO-U

The Water Safe Guard indicates proper operation with 3 LED lights; red, yellow, and green. The display of these lights are dependent on the value of X, above, and the duration.

l Green LED: RO membranes are working properly.

X < 10%

l Yellow LED: ROmembranes should be replaced at the next maintenance cycle.

10% ≤ X < 20% for greater than 3 minutes

l Red LED, flashing: RO membranes must be replaced within 24 hours or the unit will shut off.

l Red LED: RO membranes are not functioning and the humidifier unit is shut off. The humidifier

will resume function when the RO membranes are replaced. If the humidifier and its components are off for more than 48 hours, a complete clean and flush of the system is required. X ≥ 20% for greater than 24 hours

Note: During start up, the green and yellow LED will both light.

After passing the Water Safe Guard, the water passes through the water shut off valve. The water shut off valve is dependent on the incoming water pressure and the back pressure from the tank. The valve stops fluid flow when the permeate pressure is at a set-point greater than the inline water pressure.

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When the permeate pressure drops below the set-point, the shut off valve will open and allow water to enter the tank. Without the water shut off valve, permeated water will end up being drained after the tank has been filled (due to back pressure from the tank).

From the water shut off valves, the water enters two RO membranes. In the RO membranes, the incoming water is split into two streams; permeated water, and brine (water rejected by the membrane). The incoming water passes through sheets that contain small pores that only allow water to pass. The 'fresh' water moves towards the center of the membrane where they exit the other side of the ROmembrane. The brine cannot pass through the perforated sheets and is sent to the flow restrictor (not shown), the permeate pump, and then the drain.

Note: The flow restrictor is required for proper functioning of the RO membrane. The restrictor in the drain line increases the pressure against the membrane and forces water to enter the sheets in the membrane. Without the restrictor, permeate would re-enter the brine.

Permeate leaving the ROmembrane passes through a one-way, non-return valve, through the water shut off valve, and to the permeate pump. The permeate pump uses the energy of the brine to improve the efficiency of the RO membrane by overcoming the back pressure from the RO buffer tank.

From the permeate pump, the brine is drained and the permeate is sent to the pressure switch, and then the buffer tank. The pressure switch shuts off the pump when a set pressure is reached in the tank, and is designed to prevent the maximum system pressure from being reached. When the buffer tank is full, the pressure switch will power down the system.

The buffer tank consists of a hard shell enclosing a plastic bag that is surrounded by air. The air inside the tank is pressurized and may be altered by adding air to the bottom of the tank. The plastic bag is filled with RO water where it is stored and used to supplement water usage of the Ultrasonic Humidifier.

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Figure 2 - Hydraulic Diagram

1. Source water

2. Sediment pre-filter

3. Carbon filter

4. Booster pump

5. Wall transformer

6. Water Safe Guard

7. Water shut-offvalve

4.4 Options

RO-U

The buffer tank (PN: 2586532) option is required for the Ultrasonic Humidifier if the RO-U is installed.

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8. RO membrane

9. One way valve

10. Permeate pump

11. Brine water to drain

12. Pressure switch, 2.5 bar

13. RO water (permeate) to buffer tank

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4.5 Accessories

Accessories for the Reverse Osmosis System:

l Wall mounting brackets (supplied) to mount the unit and buffer tank.

l Reverse Osmosis System Installation, Operation, and Maintenance Manual (P/N:2594385_A_

EN_1811_RO_IOM) (supplied).

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5 Product Specifications

5.1 Technical Data

5.1.1 Capacity

Reverse Osmosis System Capacity (with Booster Pump, Water Saver, and Water Safe Guard)

Model Capacity

water temper ature at 10°C (50 °F):

RO-U

20 kg/h / 5.3 g/h (44 lb/h / 0.19 oz/h)

5.1.2 Weights

Table 2: Reverse Osmosis System Weight

Model Weight

RO-U 9.7 kg (21 lb)

Buffer Tank 8.7 kg (19 lb)

5.1.3 Dimensions

Model Dimensions

RO-U L xW x H: 36 x 23 x 46 cm (14 x 9 x 18 in)

Buffer Tank H: 30 cm (12 in), 35 cm (14 in) with tee; diameter: 21 cm (8 in)

5.2 Operating Data

5.2.1 Water Quality

See also "Water Supply Requirements" on page24.

maximum, water temperature at 25 °C (77 °F), at 1 bar (15 psi) min.:

31.2 kg/h / 8.2 g/h (69 lb/h / 0.29 oz/h)

Water Quality:

inlet: 3/4 in, outlet: 3/8 in JG

Water supply quality Potable / Mains with CFU < 200 CFU/ml

Permeate Quantity (retention of salts and minerals) 98 %

Permeate Concentration Quality (yield compared to the supplied water) 20-35 %

Admissible Water Temperature 10-20 °C (50-68 °F).

5.2.2 Temperature

Temperature:

Ambient Temperatur e 0-25 °C (32-77 °F)

Ambient Water Temperature 0-25 °C (32-77 °F)

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5.2.3 Power

Power (see the specification label on the unit):

Supply Voltage 24 VAC / 110 VAC transformer

Consumption 27 W

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6 Installation and Planning

6.1 General

Strictly observe and perform all installation tasks including the mounting of the unit and connection of the water and power supplies as described in this manual. Observe and comply with all local and national codes dealing with water and electrical installations. Condair does not accept any liability for installation of humidification equipment by unqualified personnel, or the use of equipment and parts that are not authorized by Condair.

Personnel Qualifications

All installation work must be performed only by licensed personnel authorized by the customer. It is the customer’s responsibility to verify qualifications of the personnel.

Safety

Observe the following safety precautions:

DANGER!

Risk of electric shock!

The Reverse Osmosis System is 24 VAC powered. Live parts may be exposed when the access panels or doors are removed. Touching live parts may cause severe injury or even death.

Prevention: The Reverse Osmosis System must be connected to the humidifier only after all mounting

and installation work has been completed and checked for correct workmanship, and the access panels/doors to the humidifier are closed and fastened securely.

Only qualified personnel should perform maintenance or repairs on the unit.

Follow any lockout procedures when servicing the unit.

DANGER!

Poorly maintained RO-U systems may be hazardous.

Prevention: Read, understand, and follow maintenance guidelines to ensure the humidification sys-

WARNING!

Do NOT leave the unit without power. Risk of contamination.

Prevention: Leave your unit powered on. If you do not need humidification during the 48 hours, set

the humidifier to standby or set the demand to 0.

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WARNING!

Risk of contamination.

Do NOT use oil, grease, glue, Teflon, silicon, O-ring lubrication, etc. when assembling pipes or hose connections. All of the above products can act as food for bacteria, posing health risks.

Prevention: For lubricant, use dish soap. Wash hands and wear clean gloves while assembling parts

in direct contact with water. Keep dust covers on pipes and hoses until assembly.

WARNING!

Water from RO-U systems may cause metals to corrode quickly.

Prevention: Read, understand, and follow maintenance guidelines to ensure the humidification sys-

tem remains safe.

CAUTION!

The RO-U System contains pressurized water.

Hoses in the RO-U System contain pressurized water that may spray if the hose connections are loose or there is a leak.

Prevention: Do not re-tighten or unscrew hoses while the system is pressurized. Test for leaks and

replace broken hoses.

Do NOT fasten the RO-U System, including the tank, hoses, and pipes to vibrating surfaces.

6.1.1 Installation Overview

This section covers the mounting and water connections for the RO-U System.

The RO-U System (with buffer tank) can be installed with any Ultrasonic Humidifier, and one should be installed for each tank in the humidifier (1 in the medium and 2 in the large). The RO-U System must be mounted on the wall, or suitable, non-vibrating mounting surface, and should have access to a drain, water supply, and power supply, and should be placed in a location that is easy to service, with enough room to install the buffer tank.

IMPORTANT! Do NOT commission the RO-U System until installation is complete and the unit is flushed. The pump in the system contains preservation fluid and must be flushed out before being connected.

IMPORTANT! Once installation is complete, and the unit has been commissioned. Avoid turning the unit off, as this creates stagnant water and health risks.

CAUTION!

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Figure 3 - Typical Configuration (medium Ultrasonic Humidifier and Ultrasonic Blower Pack shown)

6.2 Location Requirements

The RO-U System should be installed vertically (it is possible to have the system installed horizontally, however, air bleeding will be slower and pre-filter replacements may be more difficult), and mounted on a non-vibrating wall or other vertical surface that is suitable for holding the RO-U with buffer tank.

It is recommended to install the buffer tank at the same elevation as the humidifier. There may be cases where the Ultrasonic Humidifier is installed at a higher elevation than the buffer tank. Significant height differences will result in low pressures from the buffer tank, so to compensate for this pressure drop, note the height difference and increase the air pressure in the tank. Refer to "Adjusting the Buffer Tank

Pressure" on page37.

6.3 Clearance Requirements

The clearances in Figure are shown for reference only, and are suggested for ease of maintenance. Consult local and national installation codes. Condair does not accept responsibility for violations of the installation codes.

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Figure 4 - Minimum Clearances for the RO-U

(image not to scale)

A. min. 100 mm(3.94 in)

B. min. 250 mm(9.84 in)

C. min. 100 mm (3.94 in)

D. min. 250 mm (9.84 in)

E. min. 300 mm(11.82 in)

F.min. 150 mm(5.91 in)

G. min. 300 mm(11.82 in)

6.4 Site Requirements

6.4.1 Water Supply Requirements

IMPORTANT! Ensure that the water supply line is flushed out before it is connected.

To prevent the new humidifier from being contaminated with low-quality water, the entire supply line must be flushed out and tested until the water supply quality and the bacteria counts are compliant with local water quality specifications.

l Water supply connection must be installed to local plumbing codes.

l Inner diameter of the water supply line should be constant throughout the entire length.

l Water supply piping material made of stainless steel, or plastic (certified for RO or DI water sys-

tems).

l The connection material must be pressure-proof and certified for use with the R.O. system.

l The R.O system must be installed as close as possible to the humidifier.

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l Should a DI system be installed, contact your Condair representative.

D.I. (optional - not supplied)

R.O.

l Upon completion of installation, flush the water supply and drain lines to clear out debris in the

lines.

l Water supply should be free of additives, such as corrosion inhibitors and disinfectants.

Figure 5 - Water Supply Requirements

1. Water from the source entering the RO-U system

2. Water entering the US

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Mains Water Supply to RO-U

Conditions Value

Quality Potable, drinkable

Pressure 2.0-5.0 bar (30-75 psi)

Temper ature * 10-20°C ( 50-68°F)

Turbidity(max) 1.0 NTU

Max pH without Softener* 8.0

pH 6.5-7.0 pH 7.1-7.5 pH 7.6-8.0

Max Hardness *

Max US Hardness *

Max Conductivity (at 20 °C / 68°F)*,**

Max Total Dissolved Solids (TDS) *

SiltIndex (max) 3

KMnO4Potassium permanganate (max)

Fe Iron (max) 0.2 mg/L

Mn Manganese (max) 0.05 mg/L

Ca Calcium (max) 300 mg/L

Cu Copper (max) 1 mg/L

SiO2Silica (max) 1 mg/L

Ammonium (max) 0.5 mg/L

30 °dH 17 °dH 10 °dH

31 gpg 18 gpg 10 gpg

1300 µS/cm 750 µS/cm 600 µS/cm

800 mg/l 500 mg/l 375 mg/l

pH of water supply

10 mg/L

Chloride (max) 300 mg/L

Sulphates (max) 250 mg/L

Colony-forming Unit (CFU) (max) 200 CFU/ml ; no pathogens allowed

* If the water entering the RO-U system isgreater than the values indicated in this table, install a water softener between the water supply and the Reverse Osmosis System.

** Contact your Condair representative ifthe conductivity of the supplywater is greater than 350 µS/cm.

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Water Supply Requirements to the US

Conditions Value

Pressure 2-5.5 bar (30-80 psi)

spike pressure limited to 8 bar (120psi)

Temper ature 1-25 °C (34-77 °F)

Min-Max Conductivity * , Max Total Dissolved Solids (TDS)

Quality RO or DI water

Colony-forming Unit (CFU) < 200 CFU/ml for industrial applications**

* if the conductivityof the water entering the RO-U system isgreater than 350 µS/cm, contact your Condair representative .

** CFU leaving the unit via mist should be <1000 CFU/ml for industrialapplications. Keep the CF U entering the humidifier as low as possible, such that the CFU leaving the unit iswithin acceptable guidelines.

6.4.2 Drainage Requirements

l Drain piping material is suitable for RO water and DI water (if used).

IMPORTANT! Avoid copper.

l (Recommended) Floor drains present under the unit in case of leaks or overflowing water.

l Drain line connections must be installed to local plumbing codes.

l Ensure that the drain line is correctly fixed and is easily accessible for service.

l Each drain line must be installed with a constant decline (minimum 1.2°).

l The drain line should be a short as possible.

l The air gap funnel should have a minimum diameter of 64 mm (2-1/2 in).

l Ensure that the open end of each drain does NOT touch the funnel. The minimum air gap

allowed is 20mm (0.79in).

l Each drain line must lead to its own separate air gap funnel with trap, before connecting to the

drain.

l Each drain line must be secured to prevent the line from:

slipping out of the funnel

or going through, the funnel.

l Upon completion of installation, flush the drain lines to clear out any debris in the lines.

2-15 µS/cm , TDS: 9 mg/L

refer to the water supply requirements for the RO-U

follow applicable regulations

6.4.3 Power Supply Requirements

l The Reverse Osmosis System is mains powered, at 27 W with 24 VAC / 110 VAC transformer.

The power requirements are indicated on the specification label on the Water Safe Guard. Refer to "Model Designation" on page15.

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6.5 Installation

6.5.1 Safety

Observe all safety precautions and comply with local installation codes. Refer to "For Your Safety" on

page8.

6.5.2 Mounting the Reverse Osmosis System

Refer to "Mounting Requirements" for mounting requirements.

IMPORTANT! Keep the system bacteria-free by washing your hands and wearing gloves.

1. Ensure that the location meets the clearance requirements. Refer to "Clearance Requirements"

on page23.

2. Remove the RO membrane on top of the RO-U System.

3. Locate 2x4 wooden studs, or equivalent support, on the mounting surface, and mark the attachment points at the desired position. Use a level.

4. Insert screws (capable of holding the unit) at the attachment points.

5. Remove any cellophane around the sediment and carbon filters.

6. Install the sediment pre-filter on the left (closest to the Water Safe Guard).

7. Install the carbon filter. Ensure that the O-ring on the holders are seated correctly between the carbon filter element and the holders. The carbon filter element is fitted with flat rubber flanges.

8. Place the RO-U System over the screws, against the mounting surface.

Figure 6 - Mounting the RO-U

6.5.3 Connecting the Water Supply

Refer to "Water Supply Requirements" on page24 for water supply requirements.

RO-U and Ultrasonic Humidifier

1. Check that the supply water pressure is greater than 1 bar (15 psi).

2. Turn off the water supply.

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3. Connect the RO-U System to a female swivel adapter with an air bleed valve.

4. Connect the female swivel adapter to the water source.

5. Fit a 3/8 in tube from the RO water connection port to the T-piece connector.

IMPORTANT! Condair recommends using plastic or stainless steel tubing for RO water.

6. Connect the T-piece connector to the inlet valve on the buffer tank. Ensure that the orientation of the T-piece connector allows water to flow through in one direction only. Water from the RO unit should face the opening of the plastic attachment in the T-piece connector. Refer to Figure 7 -

on the next page.

7. Fit a 3/8 in tube from the T-piece connector to the humidifier. A 3/4 in adapter to the humidifier is supplied.

Note: The RO-U unit has a shut-off tap for the water supply to stop fluid flow when the buffer tank is full, and when no water is being consumed.

Note: The buffer tank should be depressurized to 0.5 bar (7 psi) before being filled with water. Refer to

"Adjusting the Buffer Tank Pressure" on page37.

6.5.3.1 (Optional) DI System

If it is found that your TDS or conductivity levels in the source water are high (>350 µS/cm), a DI system (supplied by others) should be installed (suggested to further reduce 'white dust' from forming in the humidified areas) after consulting with your Condair representative. Should a DI system be installed, the location would be between the buffer tank and the humidifier.

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Figure 7 - Supply Water Connection

1. Hose from buffer tank to humidifier

2. Inlet source water

3. Air gap funnel to drain

4. Buffer tank

5. Hose from pressure switch to tank

6. Hose from permeate pump to drain (air gap funnel)

7. Hose from water source to sediment filter

8. Female swivel adapter

9. T-piece connector

10. Permeate pump

11. Sediment filter

12. Pressure switch

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6.5.4 Connecting the Drain Line

Refer to "Drainage Requirements" on page27 for drain line requirements.

1. Fit a tube, 1/4 in minimum, from the discharge port to the air gap funnel (recommended) leading to the drain. Refer to Figure 7 - on the previous page.

Note: Leave a gap between the drain line and the drain to prevent water from flowing back into the RO-U System.

6.5.5 Installing the Electrical Connections

Refer to "Model Designation" on page15 and "Power Supply Requirements" on page27 for the electrical requirements. All wiring must be in accordance with local electrical codes.

Safety

The electrical installation work requires removal of the door panels in the humidifier. Observe the following safety precautions:

DANGER!

Risk of electric shock!

The Reverse Osmosis System is 24 VAC powered. Live parts may be exposed when the access panels or doors are removed. Touching live parts may cause severe injury or even death.

Prevention: The Reverse Osmosis System must be connected to the humidifier only after all mounting

and installation work has been completed and checked for correct workmanship, and the access panels/doors to the humidifier are closed and fastened securely.

Only qualified personnel should perform maintenance or repairs on the unit.

Follow any lockout procedures when servicing the unit.

CAUTION!

Electrostatic discharge (ESD)!

The electronic components inside the control cabinet in the humidifier are sensitive to electrostatic discharge (ESD).

Prevention: Take appropriate measures to protect the electronic components inside the unit against

damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.

l All electrical installation work must be performed only by a licensed electrician authorized by the

customer. It is the customer’s responsibility to verify qualifications of the personnel.

l The electrical installation must be performed according to the wiring diagrams in this manual,

the instructions in this section, as well as applicable national and local codes.

l All cables must lead into the unit, via appropriate cable glands or grommets, and be properly

supported.

l Make sure the cables are secured, and do not rub on any components or become a tripping haz-

ard.

l Observe national and local codes for maximum cable length and required wire sizes for cables.

To power the RO-U System:

1. Insert the transformer plug into the socket. The system requires 24 VAC power.

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7 Operation

7.1 General

Personnel Qualifications

The Reverse Osmosis System must only be operated by personnel who are adequately qualified, welltrained, and are authorized by the customer.

Safety

Observe the following safety precautions.

DANGER!

Risk of electric shock!

The Reverse Osmosis System is 24 VAC powered. Live parts may be exposed when the access panels or doors are removed. Touching live parts may cause severe injury or even death.

Prevention: The Reverse Osmosis System must be connected to the humidifier only after all mounting

and installation work has been completed and checked for correct workmanship, and the access panels/doors to the humidifier are closed and fastened securely.

Only qualified personnel should perform maintenance or repairs on the unit.

Follow any lockout procedures when servicing the unit.

DANGER!

Poorly maintained RO-U systems may be hazardous.

Prevention: Read, understand, and follow maintenance guidelines to ensure the humidification sys-

WARNING!

Do NOT leave the unit without power. Risk of contamination.

Prevention: Leave your unit powered on. If you do not need humidification during the 48 hours, set

the humidifier to standby or set the demand to 0.

WARNING!

Risk of contamination.

Do NOT use oil, grease, glue, Teflon, silicon, O-ring lubrication, etc. when assembling pipes or hose connections. All of the above products can act as food for bacteria, posing health risks.

Prevention: For lubricant, use dish soap. Wash hands and wear clean gloves while assembling parts

in direct contact with water. Keep dust covers on pipes and hoses until assembly.

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WARNING!

Water from RO-U systems may cause metals to corrode quickly.

Prevention: Read, understand, and follow maintenance guidelines to ensure the humidification sys-

tem remains safe.

CAUTION!

The RO-U System contains pressurized water.

Hoses in the RO-U System contain pressurized water that may spray if the hose connections are loose or there is a leak.

Prevention: Do not re-tighten or unscrew hoses while the system is pressurized. Test for leaks and

replace broken hoses.

Do NOT fasten the RO-U System, including the tank, hoses, and pipes to vibrating surfaces.

7.2 Starting Up

Ensure that all connections are secure.

Before beginning:

CAUTION!

l disconnect the power source from the RO-U System.

l disconnect the tube connecting the buffer tank to the humidifier.

l close the inlet valve on the buffer tank. This will prevent water from entering the tank and to raise

the system pressure quickly, without having to wait for the tank to fill. This must also be done so that the RO membranes can be flushed.

l relieve air pressure in the buffer tank. See instructions below for details.

IMPORTANT!

Has your unit been inactive and without power? Inactivity of the humidifier for more than 48 hours requires you to clean and disinfect your system before starting up. There is risk of the membrane fouling if the RO-U unit has been 'inactive' for a long period, so it is advised to keep the RO-U system on and running to regularly flush every 24 hours.

7.2.1 Start Up Procedure

First Time Start Up

IMPORTANT! Clean and disinfect the unit if the unit has been unpowered for an extended period of

time (over 48 hours). Refer to "Cleaning and Disinfecting" on page35.

1. Open the water inlet valve and allow water to flow through the RO-U.

2. Check for leaks. If leaks are found, shut off the water and repair them.

3. Connect the power supply.

4. Allow the water to flow freely for 2 minutes to flush the RO membrane.

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5. While the RO membrane is being flushed, relieve the air pressure in the buffer tank from 2.76 bar to 0.5 bar (40 psi to 7 psi) by opening the black cap and valve at the bottom of the buffer tank. Refer to "Adjusting the Buffer Tank Pressure" on page37. Lowering the pressure will allow water to flow into the tank.

6. Reconnect the tube from the buffer tank to the humidifier.

7. Open the water valve to the buffer tank and wait until the tank is completely filled. The green and yellow lights on the Water Safe Guard will illuminate. After 3 minutes, only the green LED will remain illuminated (if the water is OK).

8. Turn on the humidifier.

Start Up (Restart)

IMPORTANT! Clean and disinfect the unit if the unit has been unpowered for an extended period of

time (over 48 hours). Refer to "Cleaning and Disinfecting" on page35.

1. Open the supply valve to the RO-U System and let the system flush for 5 minutes.

2. Supply voltage to the pump by plugging in the wall adapter.

3. Reconnect the tube to the buffer tank.

4. Relieve the air pressure in the buffer tank from 2.76 bar to 0.5 bar (40 psi to 7 psi) by opening the black cap and valve at the bottom of the buffer tank. Refer to "Adjusting the Buffer Tank

Pressure" on page37. Lowering the pressure will allow water to flow into the tank.

5. Open the water valve on the storage tank.

6. Wait until the system reaches the correct pressure. When this happens, the discharge water will stop.

7. Turn on the humidifier.

7.3 Shutting Down the Unit

IMPORTANT! Clean and disinfect the unit if the unit has been unpowered for an extended period of time (over 48 hours). Refer to "Cleaning and Disinfecting" on page35. Avoid unpowering the unit.

To shut down the unit:

1. Turn off the humidifier. Refer to the humidifier Operation and Maintenance Manual for the proper procedure.

2. Unplug RO-U unit.

3. Close the supply water valve.

4. Close the water inlet valve on the buffer tank.

5. Disconnect the buffer tank from the humidifier. Excess water will be drain.

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8 Maintenance

8.1 General

Strictly observe all safety precautions, and perform only those maintenance tasks described in this manual. Refer to "For Your Safety" on page8.

Use only original Condair replacement parts.

All maintenance work must be performed only by licensed personnel authorized by the customer. It is the customer's responsibility to verify qualifications of the personnel.

The maintenance work may require removal of the cover on the unit.

The Ultrasonic Humidifier may need to be unplugged to safely maintain and operate on the unit. Refrain from unpowering the unit (for more than 48 hours) unless it is deemed necessary, as unpowered units will not flush.

8.2 Cleaning and Disinfecting

Cleaning and disinfecting should be performed by authorized persons. Contact your Condair representative for more details.

Refer to "Maintenance List" on the next page for the general procedure and frequency of maintenance.

Disinfectants are mandatory, and must NOT produce toxic residue. Observe all safety precautions labeled on the disinfectants and cleaner.

CAUTION!

Risk of damage to the humidifier components!

Do NOT use solvents, aromatized, or halogenized hydrocarbons, or other harsh chemicals for cleaning.

Do NOT use cleaning materials that could leave scratches on wet, plastic and metal surfaces of the unit.

Do NOT use hard or metallic brushes to clean the unit.

Condair recommends the following:

l Avoid recontaminating the components. Use clean gloves (that are safe to use with the agents

listed below) when handling components and cleaning agents.

l For cleaning: dish washing soap

l For descaling: citric acid solution

Note: pH 2, or 20g citric acid in 1 L water, or 0.18 lbs for every 1 gallon

l For disinfecting: 0.1% hydrogen peroxide, H

l At the end of each cleaning, allow the humidifier to fill and create mist for 2-3 minutes, then per-

2O2

form a full drain cycle. This should be performed manually or through changing the demand signal (full demand to mist; zero stop mist and allow to drain).

Condair provides a cleaning and disinfecting kit for the Ultrasonic Humidifier (P/N: 2594996)

IMPORTANT! Avoid cleaning with hard or rough materials, such as steel wool, or metal brushes. Abrasions on the surface of any components may prevent micro-organisms from being cleaned easily. Instead use a clean cloth or soft brush.

Avoid materials that will leave particles behind. Avoid using a hard, or metal (or otherwise abrasive) brush.

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To disinfect a component:

1. Review the maintenance instructions for the component that will be cleaned and disinfected. Specific considerations must be taken into account for some components.

2. Ensure UV assembly is shut down before disinfection.

3. Clean the component with hot water and soap, and rinse with water. Remove biofilms and any surface impurities. Avoid using hard or metallic brushes (to avoid surface abrasions) to clean and disinfect.

4. Descale components using citric acid* (pH 2), then rinse with water.

l *Let the component soak for 20 minutes and avoid scrubbing. Do NOT agitate the piezo-

electric transducers because they are very fragile.

5. Apply disinfecting agent (hydrogen peroxide) to the component and allow to air dry (this allows the agent to penetrate and kill pathogens).

6. Rinse thoroughly with clean water (RO or DI water) to remove residue.

To disinfect hoses:

1. Clean and disinfect hose connections, as described above.

2. Remove any residue or particles from the hoses.

3. Flush the hoses with hot water.

4. Flush the hoses with disinfecting liquid and allow to air dry.

5. Rinse the hoses with clean water (RO or DI water) to remove residue from disinfectant.

IMPORTANT! A new RO membrane arrives with disinfecting agent inside. The disinfecting agent is flushed upon first start-up, and should remain moist for optimum performance (i.e. Do NOT let the RO membrane dry out). It is NOT suggested to further clean the RO membrane. To ensure proper functioning of the RO membrane, avoid disassembling the component, and replace the RO membrane as necessary.

IMPORTANT! If the RO system must be disinfected, contact your Condair representative.

8.3 Maintenance List

Perform the following maintenance tasks at the intervals specified in Table 3 below.

Table 3: Maintenance List

Task/Component Frequency Description

Replace sediment filter Yearly If the supply water is heavilypolluted with minerals, it is

Replace carbon filter Yearly

Replace RO membr ane 2-5 Years Typicalreplacements range between 24-60 months.

Assess permeate water Yearly -

Inspect the buffer tank Yearly -

recommended to do thismore often.

Replacement isnecessary when the Water Safe Guard displaysa red light, or when the capacity has dropped more than 10%.

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8.4 Maintenance Procedures

Ensure that the humidifier is shut down properly and observe all safety precautions described in this manual . Refer to "Shutting Down the Unit" on page34 and "For Your Safety" on page8.

8.4.1 Adjusting the Buffer Tank Pressure

The air pressure pushes against the water-filled bag inside the buffer tank. Air pressure that is much greater than the pressure of the supply water pressure will prevent the tank from being completely filled. Air pressure that is too low will reduce the water pressure being sourced to the humidifier.

Adjusting the air pressure in the tank will require a pressure gauge and an air compressor; or any other device that can supply air to the buffer tank, such as a bicycle pump. For accurate pressure readings, ensure that the buffer tank is drained of water.

To adjust the air pressure in the buffer tank:

1. Turn off the RO-U System and turn off the humidifier.

2. Close the valve for the water source.

3. Close the water valve at the buffer tank.

4. Disconnect the buffer tank from the humidifier. Water will drain from the tube, so direct excess water into a drain.

5. Open the water valve at the buffer tank, and continue to let the water drain until the tank is empty.

6. Close the water valve at the buffer tank.

7. Locate and open the black cap and valve at the bottom of the buffer tank.

8. Insert compressed air until the desired pressure is attained, then close the valve and cap.

Adjust the air to 0.5 bar (7 psi) + 0.1 bar for every meter (or 0.44 psi/ft) below the humidifier.

9. Open the valve for the water source.

10. Turn on the RO-U System.

11. Open the water valve at the buffer tank. The buffer tank should fill with water.

l If the tank does not fill completely, carefully open the valve at the bottom of the tank and

release small amounts of air until the tank is full.

l If the pressure in the buffer tank is too low, carefully open the valve at the bottom of the

tank and add more compressed air.

12. Once the desired pressure is attained, turn on the humidifier.

8.4.2 Replacing the RO-U Filter

The buffer tank in the RO-U System must be depressurized before the filters can be replaced.

To replace the filters:

1. Empty water from the buffer tank. Refer to "Adjusting the Buffer Tank Pressure" above.

2. Shut down the unit, as described in "Shutting Down the Unit" on page34.

3. Twist the filter holders (these encase the filters) to remove the filters from the unit.

Note: The filter holders will contain water. Beware of spilling.

4. Empty the filter holders and clean them with soap, water, and chlorine (optional, but recommended). Rinse thoroughly.

5. Place the new filters in their filter holders.

l For the carbon filter, ensure that the O-ring is centered on top.

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6. Re-install the filter holders into the unit and hand-tighten.

7. Restart the unit and check for leaks.

8.4.3 Testing the Permeate

To test the permeate (de-ionized water from the RO membrane):

1. Take a sample of the water supply and measure the conductivity of the water with a conductivity meter. Wipe off the conductivity meter after the reading.

Note: If the micro-seimens value (µS) of the source water supply is greater than 500 µS, install a descaling system ahead of the RO-U System (recommended).

2. Take a sample of the permeate and measure the conductivity with a conductivity meter.

3. Perform the following calculation:

a. Divide the (value found in step 2) by the (value found in step 1).

b. Multiply this ratio by 100%.

4. The results indicate the following:

l <10 %: the permeate is good.

l Between 10% and 20%: the permeate is acceptable.

l >20 %: the permeate is poor. Replace the membrane.

8.4.4 Cleaning-RO-Membrane

Do not clean the RO membrane. The RO-U system, as long as it is powered, will flush every 24 hours. Should cleaning be performed, please contact your Condair representative first. It is advised that RO membranes be replaced for RO-U systems that have been unpowered for over 24 hours.

Note: A new RO membrane should come packaged with disinfectant. This disinfectant is flushed out of the system upon first time use.

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9 Troubleshooting

9.1 General

Troubleshooting of the Reverse Osmosis System must only be performed by well qualified and well trained personnel. Electrical repairs must only be performed by a licensed electrician authorized by the customer, or by Condair service technicians.

Troubleshooting the Reverse Osmosis System may require the user to access the inside of the humidifier to the control and plumbing cabinets, which may expose the user and equipment to hazards described in "For Your Safety" on page8.

9.2 General Troubleshooting

No or little water being produced

Probable Cause Corrective Action

Poor water connection

T connector improperly installed

Incorrect or no voltage

Buffer tank air pressure is too high

n Check the inlet for the water pressure and ensure that the

valve isopen. Also ensure that the valves from the buffer tank

are open.

n The T connector on the buffer tank isa 1-way valve. The

change the direction of the valve.

n Check the voltage supplyand ensure the unit is plugged in.

n Carefullyopen the air valve at the bottom of the buffer tank

and slowly release air until the tank isfull. Refer to "Adjusting

the Buffer Tank Pressure" on page37.

RO membrane is not producing enough permeate

Probable Cause Corrective Action

Blocked discharge hose

Defective or broken membrane

n Check the flow restrictor (from the waste-end of the RO mem-

brane) and the drain hose for blockages. Clean the drain

hoses or restrictor if there isa blockage, or replace if neces-

sary. The ratio of drain to permeate water should be 3:1.

n Replace the RO membrane. A proper membrane will have a

good rejection rate; the minerals in the permeate should be

lessthan 10% of the minerals in the supplywater.

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Page 40

RO membrane is not producing enough discharge water

Probable Cause Corrective Action

Blocked discharge hose

n Check the flow restrictor (from the waste-end of the RO mem-

brane) and the drain hose for blockages. Clean the drain

hoses or restrictor if there isa blockage, or replace if neces-

sary. The ratio of drain to permeate water should be 3:1.

Red LED is flashing or illuminated

Probable Cause Corrective Action

RO membrane is losing effectiveness

Leaks in the system

n RO membrane should be replaced within 24 hours of when

the red LED began flashing. The RO-U willshut off after 24

hours and the r ed LED willremain solid red.

n Fix any leaks in the system and reset the RO-U unit (turn off

and turn on).

Calcium deposits from humidification

Probable Cause Corrective Action

Ineffective RO membrane

n Test the RO membrane. Refer to "Testing the Permeate" on

page38. Replace membr ane as necessary.

Water supply is too hard

n If the inlet water is too hard (based on testing), and is over 500

µS, install a de-scaling system ahead of the RO-U system.

Ensure that the ratio of discharge water to permeate is3:1.

40|Troubleshooting

2594385_A_EN_1811_RO_IOM

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Page 41

Booster pump is not working or is too hot

Probable Cause Corrective Action

Broken or defective pump

Pump is short cycling (frequent on and off)

n Replace the booster pump. Ensure the pump iscool before

handling.

n The pump should turn off if there isnot enough water being

drawn into the system to offset what the pump outputs. Check

the valves and check for blockages. Ensure enough water is

being drawn into the pump. If this issue is frequent, replace the

pump.

Filters are not working or are leaking

Probable Cause Corrective Action

Blockage in the filter

Leak in the filter cover

Broken O-ring

n Clear the blockage or replace the filter.

n Switch the housing containers for the filters to check if the cov-

ers are faulty. If the original, leaking filter is stillleaking, inspect

the O-ring with the filter. If the switched housing is leaking (and

the original stopped), the cover is defective. Contact a Condair

representative for a replacement.

n Open the filter housing and check the O-r ing for damage or

improper installation. Replace the O-ring if necessary.

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10 Spare Parts List: Reverse Osmosis System

010

005

015

020

025

030

035

040

050

060

005

065

070

080

Figure 8 - RO-U Spare Parts. Refer to Table 4 on the next page.

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Page 43

Table 4: RO-U Spare Parts List

Item Part Number Description Quantity

005 2594388 SP, RO membrane (x2) 100 gal (XPROMEMBR-100) 1

010 — n ROmembrane external cover —

015 2594396 SP, Non Return Valve 1/4" - Flow restrictor (WKLEPNONRETURN) 1

020 2594394 SP, Shut Off Valve (WKLEPSHUTOFF) 1

025 2594395 SP. Assembly, Booster pump, 24 VDC 1

030 2594393 SP, Assembly, Permeate pump 1

035 2594386 SP, ROFilter Parts, US Humidifier 1

040 2594392 SP, Assembly, Filter Holder 1

050 2594390 SP, Assembly, Water Safe Guard 1

060 2586532 F lowThru Tank, 2 gal w accessories 1

N/S 2594398 SP, Accessories for FlowThru Tank 1

065 2594387 SP, RO Unit with Transformer, US Humidifier 1

070 2594391 SP, Transformer 120 V to 24 V/ 40 VA 1

080 2594397 SP, Assembly, RO Holder 1

N/S 2594389 SP, AssemblyShut off valve, 24 VDC 1

N/S = item not shown

RO-U 2594385_A_EN_1811_RO_IOM Spare Parts List: Reverse Osmosis System

Page 44

11 Commissioning

11.1 General

The Reverse Osmosis System must be commissioned and operated only by personnel who are adequately qualified and familiar with the Reverse Osmosis System. It is the customer's responsibility to verify the qualifications of personnel.

11.2 First-time Commissioning

The unit must always be commissioned for the first time by a service technician from your Condair representative, or by personnel who are well trained and authorized by the customer. For this reason, this manual only provides an outline, and not the details of the commissioning protocol.

The steps are in the following order:

1. Inspect the mounting of the unit.

2. Inspect the mist, water, and drain line installation.

3. Inspect the electrical installation.

4. Configure the Reverse Osmosis System through the humidifier controls.

5. Conduct performance tests, including controls.

6. Fill out the commissioning protocol documents.

Commissioning|44

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12 Decommissioning

12.1 General

If the Reverse Osmosis System needs to be replaced or removed from service for disposal, strictly follow the instructions in this section.

Personnel Qualifications

All decommissioning work must be performed only by a qualified service technician authorized by the customer. It is the customer’s responsibility to verify proper qualifications of the personnel.

Safety

Refer to "For Your Safety" on page8.

12.2 Removing Unit from Service

Remove the from service for disposal, or long-term storage, as follows:

1. Disconnect the humidifier from the power source.

2. Disconnect the control signal inputs (including any power and security loop connections) from the terminal strips in the humidifier.

3. Remove the Reverse Osmosis System from its mounting surface.

4. If the unit is to be put in long-term storage, store the unit in its original packaging inside a protected area. Ensure that the RO membrane is stored in a 0.01% hydrogen peroxide solution, and is kept in a dark and cold (avoid freezing) location. Refer to "Receiving and Storage" on

page6.

5. If the unit is to be disposed, refer to "Disposing or Recycling the Unit" below.

12.3 Disposing or Recycling the Unit

The and its components must NOT be disposed in domestic waste, and should only be disposed in accordance with local regulations at authorized collection facilities.

If you have any questions, please contact the appropriate local authorities, or your local Condair representative.

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Page 46

APPENDIX

Appendix

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Page 47

A Appendix:

Installation Checklist

Mounting

□

Unit installed in a suitable location? Refer to "Location Requirements" on page23.

□

Unit installed with suitable clearances? Refer to "Clearance Requirements" on page23.

□

Mounting surface is stable and capable of supporting the full operating weight of the unit? Refer to "Weights" on page19.

□

Unit is level?

□

Unit is fastened securely?

Water Supply Connection

□

Is the minimum inside diameter of the water supply line constant throughout the entire length?

□

Water supply temperature 1-15 °C (41-59 °F)?

□

Water supply surge-free and pressure regulated to 207-550kPa (30-80psig)?

□

Are all components and tubes and hoses secured and are all threaded connections securely tightened?

□

Leak-free water supply line?

□

Water supply line flushed?

Drain Line Connection

□

Are all components and pipes secured and are all threaded connections securely tightened?

□

Leak-free drain line?

□

Air gap funnel has a minimum diameter of 64mm (2-1/2in)?

□

Each drain line must lead to its own separate air gap funnel with trap, before connecting to the drain?

□

Open end of each drain does NOT touch the funnel? The minimum air gap allowed is 20mm (0.79in).

□

Drain line has a constant minimum decline of (1.2°) to funnel ?

□

Drain lines flushed?

□

Drain piping suitable for RO water (piping is not copper)

Electrical Connection

□

Power supply meet the voltage and current requirements shown on the specification label? Refer to "Model Designation" on page15.

□

All cables fastened securely?

□

All cables free of tension and pass through any applicable cable glands or grommets?

□

Electrical installation meet the applicable national and local codes?

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Page 48

Notes:

Page 49

Warranty

Condair Inc. and/or Condair Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years after installation or 30 months from manufacturer’s ship date, whichever date is earlier, that THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted, are free from defects in material and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used as a result of compliance with government regulations.

THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing replacement parts to the customer, F.O.B. THE COMPANY’s factory, providing the defective part(s) is returned freight prepaid by the customer. Parts used for repairs are warranted for the balance of the term of the warranty on the original humidifier or 90 days, whichever is longer.

The warranties set forth herein are in lieu of all other warranties expressed or implied by law. No liability whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product. Any further warranty must be in writing, signed by an officer of THE COMPANY.

THE COMPANY’s parts or materials that are considered consumables, including but not limited to: cylinders, filters, nozzles, membranes, media, gaskets, O-rings, etc. are NOT covered by the warranty.

THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict accordance with a copy of the catalog and installation manual in effect at the date of purchase and by a contractor approved by THE COMPANY to install such equipment.

THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or damage resulting directly from misapplication, incorrect sizing or lack of proper maintenance of the equipment.

THE COMPANY makes no warranty and assumes no liability whatsoever for damage resulting from freezing of the humidifier, supply lines, drain lines, or quality of the water used.

THE COMPANY retains the right to change the design, specification and performance criteria of its products without notice or obligation.

THE COMPANY’s limited warranty on accessories, not of the companies manufacture, such as controls, humidistats, pumps, etc. is limited to the warranty of the original equipment manufacturer from date of original shipment of humidifier.

Extended Warranty

Extended warranties are available to purchase under the conditions listed above.

Page 50

CONSULTING, SALES, AND SERVICE:

CANADA

2740 Fenton Road

Ottawa, ON, K1T 3T7

Tel: 1.866.667.8321

Fax: 613.822.7964

Email: [email protected]

Website: www.condair.com