AQUAVENDOR AUTO. Ultrafiltration Unit SETUP OPERATING INSTRUCTIONS

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1 AQUAVENDOR AUTO OPERATING INSTRUCTIONS Ultrafiltration Unit SETUP Locate the Ultrafiltration Unit undercover with sufficient space around the unit for maintenance and for installing plumbing connections. Pre-Filter Upgrade: Consider upgrading to a larger capacity unit for high NTU feed water: A pre-filter is supplied with the Ultrafiltration Unit to reduce solids and to protect solenoid valves from fouling. This is a 25mm (1 ) 200 micron (80 mesh - yellow) pre-filter requires regular cleaning to maintain a good water flow. If the feed water is reasonably dirty it may be worth considering upgrading the pre-filter to a larger size or alternatively installing an automatic self-cleaning pre-filter. Flow Control Valve Other Options: A flow control valve (FCV) is installed on the Ultrafiltration Unit which restricts water throughput to a maximum of 16 litres per minute. The FCV is ideally suited when an electric water pump is used to supply feed water to the Ultrafiltration Unit. In other instances where a pump is not used the FCV may excessively restrict water flow and may need to be replaced with other options - see Feed Water Supply Options below for more details. Feed Water Supply Options: Electric Water Pump: Small electric water pumps 25mm (1 ) are suitable for supplying feed water from a raw water supply tank directly to the Ultrafiltration Unit. Pumps with a power rating of 600 to 1200 watt and a pressure head of approximately 15 metre to 45metres should be adequate for use. OPERATING INSTRUCTIONS AUTO ULTRAFILTRATION UNIT 1

2 When considering pump sizing consult the pump performance curve tables to take into consideration pipe sizing, pipe length, suction & lift requirements together with friction loss for pumping water. Header Tank Gravity Feed Supply: Feed water can be supplied directly from elevated header tanks to the Ultrafiltration Unit. In such cases consideration can be given to the removal of the flow control valve supplied with the Ultrafiltration Unit provided that the measured flow rate through the unit does not exceed 16 litres per minute and head pressure does not exceed 200 kpa. Pressure System Feed Supply: Feed water supplied from a pressure feed system connected to the Ultrafiltration Unit and exceeding approximately 200 kpa should be regulated using a pressure reducing valve. A pressure reducing valve needs to be plumbed after a 200 micron (80 mesh) pre-filter to ensure its operation is not compromised by dirty feed water. When installing a pressure reducing valve the flow control valve supplied with the Ultrafiltration Unit can be removed however the unit in operation needs to be tested to ensure pressure does not exceed specified limits and the measured flow does not exceed 16 litres per minute. PLUMBING CONNECTIONS The Ultrafiltration Unit is supplied with 20mm (3/4 ) plumbing connections which are suitable for connecting hoses or glue pipe to the unit. Connect supply feed water to MV1 from pump of header tank. Connect backwash hose to MV2 and discharge to drainage. Connect filtrate hose to MV3 and discharge to the filtrate drinking water tank. Connect hose to vented backwash MV4 and ensure free unrestricted air flow to drainage. ELECTRICAL CONNECTIONS Power Supply A 240 volt AC power supply is required to operate the Ultrafiltration Unit. This is connected to the Memtrol which controls the operation of the Ultrafiltration Unit. The unit can also be powered by a solar system of suitable size to produce the required voltage through an inverter. The Memtrol powers and controls a 240 volt air pump with a run time of approximately four minutes per hour of filtration operations. 2 OPERATING INSTRUCTIONS AUTO ULTRAFILTRATION UNIT

3 The Memtrol also powers and controls three solenoid valves each 24 volt DC to control water flow. The Memtrol can also be used to power and control a water pump of suitable size for the supply of feed water to the Ultrafiltration Unit. The Memtrol also has inputs for receiving signals from float switches that can be located in a filtrate tank and/or the feed water supply source. These signals turn the Ultrafiltration Unit on and off subject to availability of feed water and filtrate water Memtrol (circuit board controller) The Memtrol undertakes a number of functions including: Activating solenoid valves for the control of water flowing thought the Ultrafiltration Unit and undertaking cleaning cycles. Interacts with an operator for undertaking chemical cleaning cycles and other functions. Receives signals from float switches (if installed) to signal start up and shut down procedures. Warning: 240 volt AC is supplied to the Memtrol. Electrical connections to and from the Memtrol should only be undertaken by a licensed electrician. Safety precaution: The Memtrol should only be connected to a power supply protected with an approved electrical safety switch (also known as a residual current device or RCD) to prevent accidental electrocution. Before connecting the Memtrol to a power supply, first undertake connections to input and output ports located in the Memtrol: Electric pump connection: If using an electric pump for supplying feed water, connect the electrical connection from the pump to the pump motor output port located in the Memtrol. Note: use a pump suitably rated for use with the Ultrafiltration Unit (see Feed Water Supply Options ). Water level controllers: to facilitate the flow of water through the Ultrafiltration Unit connect float switches to the switch inputs ports located in the Memtrol as follows: o Feed Water Float Switch: if installing a float switch to the feed water supply source (well, tank, creek etc) connect the electrical cabling to SWITCH INPUTS # 1. A feed water float switch will activate the Ultrafiltration Unit when feed water is available and deactivate the Ultrafiltration Unit when feed water runs dry. If a float switch is not being installed the SWITCH INPUTS # 1 needs to be provided with closed circuit wiring. o Filtrate Water Float Switch: if installing a float switch to the filtrate reservoir (drinking water tank) connect the electrical cabling to SWITCH INPUTS # 2. A filtrate water float switch will activate the Ultrafiltration Unit when filtrate tank is low and deactivate the Ultrafiltration Unit when the filtrate tank is full. If a float switch is not being installed the SWITCH INPUTS # 2 needs to be provided with closed circuit wiring. OPERATING INSTRUCTIONS AUTO ULTRAFILTRATION UNIT 3

4 OPERATING THE ULTRAFILTRATION UNIT Commencing filtration: Once electrical and plumbing connections are completed the unit can be initiated to commence filtration operations. Refer to the Power Up and Filter Mode Operation of the Memtrol Quick Operating Guide and follow the #1 procedure. This fills the unit with feed water and sets in motion the filtration cycle. Concentrate Cleaning Procedures: At the nominate period as indicated by the Memtrol, initiate the Clean Mode Operation as indicated in the Memtrol Quick Operating Guide and follow the #2 procedure. Concentrate Cleaning is undertaken to remove accumulated organic matter, Iron and other chemicals. First use Chlorine to undertake a concentrate cleaning procedure and once completed undertake another concentrate cleaning procedure using Citric Acid. Caution: When handling chemicals keep safe by wearing protective gloves, eyeglasses and clothing and avoid inhaling chemical fumes. Refer to Material Safety Data Sheets when handling chemicals. Concentrate Cleaning Cycle using Chlorine Concentrate Cleaning using chlorine is undertaken to remove accumulated organic matter. Chlorine comes as dry granules e.g. calcium hypochlorite (bleaching powder) or a liquid e.g. sodium hypochlorite. To make up a chlorine solution for use in the water filter unit using 0.1% chlorine (1,000 parts per million) undertaking the following procedure: Fill the Concentrate Tank with clean water. Use a teaspoon to add chlorine to the concentrate tank as per the concentrations below and stir with a mixing stick until dissolved: o Add 2 Teaspoons of Chlorine powder with 65% available chlorine (700g / kg) or o Add 3 Teaspoons of Chlorine powder with 55% available chlorine (550g / kg) or o Add 4 Teaspoons of Chlorine powder with 35% available chlorine (350g / kg) or o Add 6 Teaspoons of Chlorine powder with 25% available chlorine (250g / kg) or o Add 100 Millilitres of Liquid chlorine (Sodium Hypochlorite) with 12% available chlorine. When instructed by the Memtrol open MV5 to allow the concentrate tank to drain, than close MV5. Concentrate Cleaning Cycle using Citric Acid After completing concentrate clean using chlorine follow with Concentrate Cleaning using Citric Acid to remove accumulated levels of Iron and other Chemicals. Use 500 grams of Citric Acid as follows: Fill the Concentrate Tank with clean water and mix in 500 grams of Citric Acid. When instructed by the Memtrol, Open MV5 to allow the concentrate tank to drain, than close MV5. Pre-filter Cleaning: The pre-filter fitted to the Ultrafiltration Unit requires regular cleaning to maintain water flow. The frequency of cleaning depends on how dirty the feed water is. To clean simply unscrew the collar and remove the canister containing the disc filter and remove the disc filter from inside the canister. Shake the disc filter in a bucket of water before refitting back to the Ultrafiltration Unit. Air Pump Filter Cleaning: The Alita Air Pump filter periodically requires cleaning. Unleash the strap around the pump unit and unscrew the knob on top of the unit to release the cover. Remove the filter cloth and rinse by hand in water, wring dry and replace. 4 OPERATING INSTRUCTIONS AUTO ULTRAFILTRATION UNIT

5 PRACTICAL CONSIDERATIONS Keeping Water Pipes Safe It is good practice to pre flush hoses, taps, and other equipment with a chlorine solution to eliminate contamination prior to use for drinking water purposes. Use a concentration of 0.1% (1,000 parts per million) - add approximately 1 teaspoon of chlorine powder to 5 litres of water. Keeping Drinking Tanks Safe Water produced from the Ultrafiltration Unit is of a high standard however, storage of this water in tanks over time can result in a loss of water quality due to post contamination. In hot climates, tank water may stay safe for a few days whereas in colder climates it may stay safe for weeks. To maintain water quality it is good practice to disinfect drinking water tanks with a small amount of chlorine to prevent the growth of unwanted organisms and pathogens in the stored water. Add sufficient chlorine into drinking water tanks to maintain a residual free chlorine level of between 0.2 to 0.5 milligrams per litre (mg/l). Use a water testing kit every few days to monitor the chlorine levels and make adjustments to the chlorine levels as necessary. As a guide for every 1,000-litres of tank water, add about 3/4 teaspoon of chlorine powder (at 65% available chlorine) or 1 1/2 teaspoons of chlorine powder (at 35% available chlorine). First, mix the chlorine in a small bucket of water to make a solution before adding to the water tank. Making sure the Feed Supply Water is suitable for Ultrafiltration Not all water is suitable for filtering through the Ultrafiltration Unit for the purpose of producing drinking water and testing for unsuitable contaminates should be undertaken before use. Diseases - Yes: The Ultrafiltration Unit will significantly remove biological contaminates and pathogens including bacteria, viruses, protozoa, cysts, parasites etc. making the water safe to drink. Turbidity Yes: The Ultrafiltration Unit will remove turbidity and dirt from water. However, the dirtier the water, the more often the pre-filter needs. Chemicals No: The Ultrafiltration Unit will not remove salt or dissolved chemicals and minerals. Laboratory testing of water before use will indicate if feed water is suitable for processing thorough the Ultrafiltration Unit. OPERATING INSTRUCTIONS AUTO ULTRAFILTRATION UNIT 5