Summary of Contents for VTS Medical Systems Ventus S Series
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VENTUS S-Type Air-Handling Units Operation and Maintenance Manual OMM-SVS-ver.2.0 (03.2019)
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ATTENTION: In order to ensure proper condensate elimination, this Air Handling Unit requires accurate levelling. Use a spirit level tool when installing. Manufactured in accordance with EN 1886, EN 13053 VTS reserves the right to implement changes without prior notice VENTUS S-Type Air Handling Units...
Table of Contents 1. INTRODUCTION .................. 4 2. APPLICATION AND DESIGN ............... 4 3. TRANSPORT AND STORAGE ............. 6 4. MOUNTING, CONNECTION TO UNIT-RELATED SYSTEMS ..... 7 4.1. Suspending the VENTUS S-Type unit................7 4.2. Connecting the ventilation ducts…………............... 9 4.3.
1. INTRODUCTION In-depth familiarization with the content of this manual, assembly and operation of the air-handling unit in line with the instructions provided and obeying all safety regulations constitute the basis of an efficient, safe and non- failure operation of the device. Works related to unloading packages with AHU subassemblies, transportation of the packages, AHU blocks and elements, connecting AHU-related systems as well as maintenance and repair have to be carried out by qualified specialists or have to be supervised by the authorized personnel.
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Fig.1. Example of suspended AHUs type SVS 35-100 Tab.1 Dimensions of AHUs type SVS 35-100 Air damper AHU external sizes [mm] AHU mass [kg] Flexible connection size [mm] size [mm] AHU type Length Wide Height 4R coil 6R coil inlet (w x h) outlet (w1 x h1) SVS-35 1 120...
Fig. 2 Right-hand version of the VS 35-100 AHU 3. TRANSPORT AND STORAGE The SVS AHUs are delivered assembled After the AHUs, are delivered in closed, properly labeled and undamaged palettes and after signing the consignment note by the client representative, the units become a property of the customer.
Fig. 4 Transport with the use of a crane The units have to be transported in their working position (horizontally) and they should not be stored one on the other. The units and their optional components should be stored in the following conditions: - relative humidity in the room: φ...
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Fig.5. Example of suspending the AHU sections Fig.6. Suspension grips arrangement The space between the slings must allow for the assembly of the siphon (if there are no the special pump) which drains the condensate out of the unit. On both sides of the AHU at the service hole level should be free space min. 500mm to allow for a possible replacement the fan (fig.6).
Fig.7. Examples of AHU installation *H - see table 3 4.2. Connecting the ventilation ducts Attention: Before connecting the ducts, it is necessary to make an electric connection of motor fan, in order to ensure an appropriate direction of the fan rotation. The ventilation ducts should be connected to the AHU with flexible connections (optional accessory) which suppress the vibrations of the unit and level the coaxial deflection of the duct and the AHU outlets.
4.3. Connection of coolers Connection of coolers should be done in such a way so as not to allow for stresses exchanger’s connections which may result in mechanical damages or leakages. The pipeline weight and thermal stresses cannot be passed onto the exchanger's connections. Depending on local conditions, please use the compensation at the inlet and outlet of the pipeline system, in order to level the pipeline's linear expansion.
Fig.10. Example of a feeding water exchanger 4.4. Draining out condensate The outlet condensate connections, led outside the AHU's casing are assembled in the drain plates of glycol, cross-flow and rotary exchangers (the diameter of drain pan connection pipe is 32mm). Siphons, which are designed to drain out condensed water from the exchangers at different pressure of the section and environment, should be connected to the drain connections.
4.5. Electric connection Electric connection of AHU should be carried out by the qualified personnel and should be done in accordance with all standards and regulations being in force in the country where the unit is installed. The cross-section and type of cables (e.g. a shielded cable) feeding individual functional segments should be selected basing on nominal current and specific operation conditions (e.g.
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Attention: In the fan sections equipped with more than one fan (SVS 70-100) synchronous operation of fans should be ensured. The fan control system should be prepared in such a way so as to provide simultaneous start- up, rotary speed control and stoppage. In case of a breakdown and stoppage of one fan, the entire fan set does not fulfill its function and should be disabled.
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Fig.12b. Connecting diagram of the AC in SVS 70-100 (1) – without frequency converter 2) – with frequency converter Fig.12c. Connecting diagram of the EC motor (1) – In SVS 35-50 2) – In SVS 35-50 VTS reserves the right to implement changes without prior notice VENTUS S-Type Air Handling Units...
4.7. Automatic control A complete automatic control, which should be an integral part of each air-conditioning system, enables continuous operation of a device. In many cases it is an indispensable element and the lack of it may lead to serious operational problems or failures. This documentation does not include information regarding the assembly of automatics, connecting, starting-up and operating of the system.
5. PREPARATION FOR START-UP AHU start-up at putting the ventilation system into service can be carried out only by the qualified and competent personnel. Before the system is launched, it should be thoroughly cleaned. Check if: - any of automatic elements or equipment were not damaged, - all ventilation devices are mechanically installed and connected to the ventilation system, - ground cables connecting the control gear with ventilation ducts are installed, - hydraulic systems are fully installed and ready for operation and the cooling medium is present during the...
6. START-UP AND ADJUSTMENT During the start-up it is possible to verify whether the AHU was made in accordance with the design and is ready for operation. The start-up and the adjustment of the ventilation/air-conditioning systems can be done only by the qualified and competent personnel, equipped with necessary test devices.
The measurement should be carried out at the duct's fragment with parallel walls and straight segments at least 6 times longer than the duct diameter or equivalent diameters before the test point and not less than 3 diameters after it. In the real ventilation system finding such a long straight fragment can be a problem. In such a case determine the measurement cross-section in a place where the smallest distortions of the air-flow are expected and intensify a network of test points.
The personnel in charge of the AHU should maintain up-to-date records after the initial AHU start-up, following the guidelines in of the "Inspections and maintenance table" - which is Included in the Warranty Card. Any routine works related to the AHU operations should be recorded there. Carefully kept register is the only reliable document stating the unit operation conditions, dates of current inspections, identified problems, etc.
7.3. Cooler Contamination level of the cooler should be checked during each replacement of the filters. If necessary, the cooler may be cleaned using vacuum cleaner with soft suction nozzle and washed with using spray disinfectant. Some of the cleaners such as for e.g. Pro Care allows to cleaning exchangers and drain pans by rich spraying the coil or pan surface with using a low-pressure spray and wait several minutes without neccessity of flushing.
9. INFORMATION Routine inspections carried out by the qualified technical personnel or by the VTS Authorized Service Providers guarantee a long-term, reliable and failure-free operation of the device. Our service personnel is always available to accompany you during the start-up, maintenance and in case of any emergency related to the device operation.
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