Manual # OMAV2-SUMP1 High Performance Air & Dirt Separators Manual # 9636-1230 Rev. A Operation & Maintenance Manual 340 West 8th Street Peru, IN 46970 PH: 765‐472‐3351 FX: 765‐472‐3968 www.thrushco.com COPYRIGHT THRUSH CO., INC.
Thrush Co. Manual #9636-1230 Table of Contents Section No. Description Page No. 1 General Product Information 1 2 Safety Information/Warnings 2 3 Component Identification and Information 3-6 4 Installation and Operation 7-12 5 Maintenance Information 13 6 Parts Ordering/Contact Information 14 THIS DOCUMENT CONTAINS INFORMATION THAT THRUSH CO. DEEMS CONFIDENTIAL AND PROPRIETARY. THE BASIC THRUSH CO. PRODUCT REVEALED IN THIS DOCUMENT IS PATENTED, AS ARE CERTAIN PRODUCT COMPONENTS.
Thrush Co. Manual #9636-1230 Section 1 General Product Information 1.1 Overview The Aar-O-Vent® is another product in the long line of innovations from Thrush Co.,INC. It has been carefully assembled and factory tested to provide years of trouble-free service. This manual provides information to install, operate, service and maintain the Aar-O-Vent. Multiple Aar-O-Vent models are covered (Figure 1-1).
Thrush Co. Manual #9636-1230 Section 2 Safety Information/Warnings 2.1 Safety Information and Warnings Every practical safety feature has been incorporated into the design and manufacture of the Thrush Co. Aar-O-Vent. If questions are not answered by this manual, or if specific installation, operation, and/or maintenance procedures are not clearly understood, contact your local representative before proceeding.
Thrush Co. Manual #9636-1230 Section 3 Component Identification and Information 3.1 Component Identification The following paragraphs contain functional descriptions for each of the major components of a Thrush Co. Aar-O-Vent. This manual provides information for multiple Aar-O-Vent models. All the components listed have the same functional purpose in each model.
Thrush Co. Manual #9636-1230 3.1.1 Coalescing Medium Each Aar-O-Vent model incorporates an all stainless steel coalescing medium often referred to as the bundle. This coalescing medium eliminates virtually any dirt particles, air bubbles and/or entrained air from the water by means of an air eliminator or blow down valve. This patented design resists corrosion and can be easily cleaned. Figure 3-2 Coalescing Medium 3.1.
Thrush Co. Manual #9636-1230 3.1.3 Removable Head Option The removable head option allows the user to easily remove the bundle for cleaning or inspection, available on all models. REFERENCE SUBMITTAL DATA FOR DISTANCE REQUIRED TO REMOVE BUNDLE COALESCING MEDIUM / BUNDLE REMOVABLE HEAD Figure 3-4 Removable Head Detail Depending on the size of Aar-O-Vent, the bundle can be quite heavy. It is recommended that supports be used when removing the head and bundle.
Thrush Co. Manual #9636-1230 3.1.4 Thrush Model 720 Air Eliminator The Thrush Model 720 Air Eliminator is a unique high capacity, air elimination device. It is designed to eliminate air as fast as it can be separated from liquid. The valve will not open if negative pressure occurs, preventing air from being drawn back into the system.
Thrush Co. Manual #9636-1230 Section 4 Installation and Operation 4.1 Installation Tips The following procedures are to aid the operator in installing the Aar-O-Vent. All procedures are to be performed by experienced, trained, and certified personnel only. 5” and larger Aar-O-Vents have lift lugs to aid in lifting and locating the unit. The lift lugs are not intended to be used to support the Aar-O-Vent during operation.
Thrush Co. Manual #9636-1230 4.1 Installation Tips (Continued) Using the figure below as reference only, note the steps outlined to install piping for the Aar-O-Vent (Figure 4-1). AIR ELIMINATOR LIFT LUGS (2) (5" & LARGER) TO DRAIN SKIM VALVE AAR‐O‐VENT ISOLATION VALVE (OPTIONAL) FLEX CONNECTOR(S) (AS NEEDED) RETURN SUPPLY SUPPLY SOURCE BLOW DOWN VALVE TO DRAIN TRI‐FLOW VALVE PUMP SUCTION BOILER SUCTION DIFFUSER PUMP Figure 4-1 Typical Piping Diagram 1.
Thrush Co. Manual #9636-1230 4.2 Operation Heating/cooling system efficiency and component life is greatly dependent on water quality. Air and dirt particles can cause pump cavitation, corrosion and increased component wear. In a closed loop system, the Aar-O-Vent eliminates air bubbles, entrained air and dirt particles quickly and easily. Air Elimination: Thrush Co. offers the Aar-O-Vent in “Air Only”, “Dirt Only” and combination units “Air and Dirt”.
Thrush Co. Manual #9636-1230 4.2 Operation (Continued) RELEASED AIR AIR ELIMINATOR FLOAT AIR COLLECTS AT THE TOP OF THE VESSEL LOWERING THE WATER LEVEL. WHICH CAUSES THE FLOAT INSIDE THE AIR VENT TO DROP AND RELEASE THE AIR.
Thrush Co. Manual #9636-1230 4.2 Operation (Continued) Dirt Elimination: The “Dirt Only” and “Air & Dirt” Aar-O-Vent models have extra space in the lower section of the vessel for collection of dirt particles. Outlined below is the operational information on the dirt elimination feature of the Aar-O-Vent. Use Figure 4-3 for reference (“Air and Dirt” model shown). Dirt particles in the system water enter the Aar-O-Vent and collide with the coalescing medium.
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Thrush Co. Manual #9636-1230 Section 5 Maintenance Information 5.1 Maintenance Information The Aar-O-Vent’s simple design allows for minimal maintenance. There are no moving parts other than the air elimination device itself. Routine flushing of the blow down valve and skim valve are recommended. Frequency of flushing is system specific based on water quality. A container or hose should be used to catch the sediment when flushing the valves, unless they are piped to an adequate drain.
Thrush Co. Manual #9636-1230 Section 6 Parts Ordering/Contact Information 6.1 Contact Information Any additional information not supplied in this manual can be given by your representative. If your representative cannot be reached, please contact our customer service department: Thrush Co., Inc. PO Box 228 340 West 8th Street Peru, IN 46970 Attention: Customer Service Group Phone: Fax: E-mail: (765) 472-3351 (800) 755-8110 (765) 472-3968 customerservice@thrushco.
