commercial reverse osmosis system installation instructions

Commercial Reverse Osmosis Installation Instructions

8/8/2021

We have provided basic installation instructions for our 2000 & 4000 gpd commercial reverse osmosis systems provided by RainDance Water Systems. Note: Installation procedures and information will vary from system to system. This is intended to serve as a guide, detailed information and specific instructions will be included with your order.

LOCATION: It is recommended that RO systems be located where they are protected from harsh environments such as rain, snow and extreme temperatures (both hot and cold). The RO is intended for indoor installation. RO Series systems can be located just about anywhere inside where there are water and electrical supplies and a drain for the brine discharge. Keep in mind, however, that they should be out of normal traffic patterns but easily accessed for daily monitoring and service. The hazards of flooding in the event of system failure should also be considered in the location selection.

PLUMBING: Always abide by local plumbing codes when installing the system. When installation procedures conflict with your local plumbing codes, STOP and contact your dealer or RainDance Water Systems. Connect a feed water supply line to the pre-filter inlet (the filter is 3/4” FNPT on the left side). The product and drain line connections are ½” tube QC fittings on the lower rear side of the unit and they are so marked. Connect 1/2” OD tubing at these ports. If the optional PureFlush featuire was ordered there will also be a 3/8” quick connector on the panel at the lower rear of the system. This input should be connected with 3/8” OD tubing to a pressurized source of product water.

WATER SUPPLY CONNECTION: If the supply water is being drawn from a non-pressurized storage tank, a boost pump will be required to overcome filter backpressure and maintain a minimum of 25 psi (1.7 bar) to the pump. When the RO starts there will be a momentary drop in feed water pressure. During this start-up, if the source feed water system can not maintain a pressure above the cutout pressure of the low pressure switch (12 psi), the following options are possible:
1) If the pressure drop is not more than, say, 6 psi below the 12 psi factory setting, the low pressure switch setting can be lowered
2) A 10-gallon bladder tank can be added at the feed filter inlet to help hold the pressure from dropping below the cutout setting of the LP switch. The bladder tank also reduces recovery time. If the feed pressure drops below the cutout point and can not recover to at least 22 psi quickly the use of the tank will not help.

DRAIN CONNECTION: Run the brine line to an appropriate drain and secure as possible. Be sure to check your local plumbing codes to see if an air gap between the system and the drain is required.

PRODUCT CONNECTION: Connect the ½” OD tubing line to an atmospheric storage system, or if your RO was ordered with the pressure tank switch option you may connect a pressure tank sized per your requirements and the RO system production rate. The product water connection to storage tanks should not be made until the system is flushed and tested.

FLUSH CONNECTION: Connect a length of 3/8” tubing from the FLUSH IN connector at the lower rear of the frame to a source of pressurized product water. This can be the output line from a repressurization pump or from the product tank itself if the high water level in the tank is at least 35’ above the FLUSH IN connector.

WARNING! DO NOT CONNECT POWER UNTIL THE SYSTEM IS COMPLETELY INSTALLED AND READY TO RUN. ALL ELECTRICAL WORK SHOULD BE DONE BY A QUALIFIED ELECTRICIAN IN CONFORMANCE WITH ALL APPLICABLE ELECTRICAL CODES.
Commercial RO systems come standard with bare power leads for either hard wiring to a disconnect box or for installation of the proper power plug. Be sure the receptacle you use is on a circuit that has a Ground Fault Interrupter (GFI) and has sufficient capacity for the operating current. It is recommended that the unit be installed on a dedicated circuit panel with the correct circuit breaker or fuse sizes installed. The power cord is so labeled and extends from the front left side of the RO system. Wire leads may be provided for RO control from pre-treatment equipment and your product storage system. Do not connect electrical power to these leads in any way. The wires are red and black. These leads are wire nutted together at the factory. All external switches must be closed for normal operation. These wire leads are tagged for storage tank float switch or pretreat lock out connection. The pretreat lockout wires will only be available if pretreat lockout was specified at time of system order. The Electrical Schematic is all-inclusive. Your unit may not include all the components shown. Note that on 220V AC power it is required that the ground (green) wire be connected. The RO system controllers operate internally on 110VAC which is obtained from one of the 220V hot legs and the ground wire. If the ground is not connected properly the controller will not function.

EXTERNAL FLOAT SWITCH WIRING: Remove the wire nut from the two (2) leads. Strip approximately ½” of insulation from both wires on the float switch and splice to the RO leads. The float switch must be of the normally closed (NC) type, i.e. when the switch is hanging down the contacts are closed. Remove the wire nut from the leads on the wire marked “Tank Level” and connect to the float switch wires. Wires can be connected either way. If Tomar provides the tank and float switch, the appropriate electrical connection will be provided.

STARTUP, FLUSH AND PERFORMANCE VERIFICATION:
Although our RO systems are fully tested at the factory prior to shipping, it is strongly recommended to flush and verify your system’s performance on-site, particularly if the unit was not installed soon after delivery.
INITIAL STARTUP AND FLUSHING:
New membranes have a preservative on them that should be flushed before use. Although the system was run at the factory, additional flushing is recommended. Run the product line to a drain and run the system until the product TDS has stabilized. Close the RECIRC control kob full clockwise. Open the BRINE control know full counter-clockwise. Turn on the water supply to the unit and check for leaks up to the solenoid valve.
Turn OFF-POWER-ON switch to ON.
After the system has run for a few minutes turn the BRINE valve clockwise until the VESSEL IN pressure gauge reads 150 psi (10.3 bar) or a product flow rate of 1.4 gpm (525 ml/min) for the 2000gpd RO or 2.8 gpm (1051 ml/min) for the 4000gpd RO. Allow the system to flush for about 5 minutes then slowly open the RECIRC control knob counterclockwise until the RECIRC flow meter indicates about 3 GPM. This will cause the VESSEL IN pressure to decrease. Now close the BRINE knob and open the RECIRC knob together so that the VESSEL IN pressure remains about 150 psi and stop when the BRINE flow meter indicates about 1 GPM for a 4000gpd or 0.6 GPM for a 2000gpd RO. At this point the PRODUCT flow meter should indicate about 1.4 GPM for a 2000gpd RO and 2.8 GPM for a 4000gpd RO. Keep in mind that these BRINE and PRODUCT flow rates are based on typical 500 ppm feed water and 77 degree water temperature. Lower temperatures or higher ppm feed water will reduce the PRODUCT flow rate and require higher BRINE flow rates. For cold and/or high ppm feed water the VESSEL IN pressure may be raised to a maximum of 200 psi by reducing RECIRC flow while maintaining BRINE flow. DO NOT OPERATE THE SYSTEM WITH BRINE FLOW LESS THAN THE EXAMPLE RATES GIVEN ABOVE OR MEMBRANE FOULING WILL OCCUR.

RainDance 400 Gallon Per Day Light Commercial Reverse Osmosis System

The RainDance-400 (400 gallons per day) Light Commercial Reverse Osmosis Water Purification Package. With Chlorine/Chloramine Removal, 3 Year Replacement Pre-Filter Package & Optional TDS Water Blending Valve To Custom Design Your Water To Your Specifications!

Holiday Sales Start Now Through December 31, 2023!
Lock In Prices With Our Amazing RainDance Light Commercial Reverse Osmosis Deals: Now Save An Additional $300.00 On The RainDance-400 Reverse Osmosis System When You Apply Coupon Code RAIN300 At Checkout Or Order Over The Phone - This Discount Code Will End 12/31/2023

Providing Light Commercial Reverse Osmosis Systems Since 1998!

RainDance Water Systems 400GPD Light Commercial Reverse Osmosis System

400gpd Stainless Steel Compact Wall Mount Reverse Osmosis System - Treats High Minerals Up To 2,500ppm TDS - Includes Color Coded RO Tubing

High Capacity / Low Energy Commercial RO System
Easy To Install, Maintain & Service
Includes: Attached Sediment & Chlorine/Chloramine Removal Prefiltration
Uses Up To Date RO System Design Software To Reduce Waste Water & Achieve A 50% Recovery.
Includes: Electronic Control Panel
Includes: Water Totalizing Meter (Counts Gallons Used)
Includes: Instructions & Diagrams Pre-Loaded On Flash Drive
Includes: Lifetime Support & Water Testing
New Upgrades Included:
*Free Delivery - Yes
Free Service Kit - Yes
Free 24/7 Support Services - Yes
Free RO Water Usage Meter - Yes
Free Water Quality Monitors - Yes
In Stock - Yes