W.Tech RAA Series Installation And Maintenance Manual Download

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W-Tech S.r.l.

Via Moglio, 18/2

40037 Sasso Marconi - (BO) Italy

+39 051 6783010

+39 051 6784941

Reg. Imp. BO C/F - P.Iva: 03079111203 - Rea BO 490312 - Cap. Soc. 32.000

€

i.v.

Installation and maintenance manual

Closed circuit evaporative cooler

Axial type

Serie RAA

Summary of Contents for RAA Series

Page 1: ...o Marconi BO Italy T 39 051 6783010 F 39 051 6784941 info w tech it www w tech it Reg Imp BO C F P Iva 03079111203 Rea BO 490312 Cap Soc 32 000 i v Installation and maintenance manual Closed circuit e...

Page 2: ......

Page 3: ...BEFORE THE START UP 8 4 1 Cleaning 8 4 2 Inspection and checking 8 5 START UP 8 5 1 Secondary circuit 8 5 2 Primary circuit 8 6 OPERATING INSTRUCTIONS 8 6 1 Tower Performance 8 6 2 Control of water q...

Page 4: ...impeller and installed in a vertical position facilitating inspection and maintenance The water is then collected in the basin of the unit and ready to be pumped again after passing through a stainle...

Page 5: ...r basin A minimum 2 slope is granted in order to naturally flow water out of it On one side of the basin a stainless steel anti cavitations suction filter is provided to protect the re circulating pum...

Page 6: ...Motor s Diffuser and fan guard Water distribution system secondary circuit External secondary circuit pipe upper part delivered loose Drift eliminator WOOD SUPPORTS AS WELL AS THE PLASTIC OR CARBOARD...

Page 7: ...e tower must not be levelled using wedges or any other element between the beams and the basin because it will not give adequate longitudinal support Fig 3 3 2 Location conditions The tower must never...

Page 8: ...eter of the assembly flanges must be cleaned Then a rubber sealing gasket supplied will be installed in order to avoid any damp and or dirt just in the centre line of the holes of the flange If the co...

Page 9: ...of the motors and also of the fans and the electrical pump the following measures have to be considered Before connecting the motor terminals to the mains make sure that the terminal voltage shown on...

Page 10: ...UT HAVING THE FANGUARD AND THE ACCESS DOOR CORRECTLY FITTED THE FAN MUST BE STOPPED BEFORE THE OPERATIONS OF REMOVING AND REPLACING THESE ELEMENTS ARE CARRIED OUT 6 OPERATING INSTRUCTIONS 6 1 Tower Pe...

Page 11: ...Evaporated water flow in the tower as a percentage of nominal water flow P Total blow down drift in tower plus losses in circuit plus deconcentration blow down as a percentage of nominal water flow T...

Page 12: ...the water will be drained from the circuit and it will be cleaned thoroughly adding water until the drain water appears clean Finally it will be filled with clean water and between 5 and 15 p p m of c...

Page 13: ...as the custom in the past to take the casing temperature as the only indicator to determine correct motor operation 7 2 2 Fans A monthly inspection has to be carried out in order to remove any paper l...

Page 14: ...THE GENERAL CONDITION M M N M M M S N CLEANING AND DISINFECTION M M M N M N S N S S S BASIN WATER LEVEL M INSPECTION FOR OVERHEATING NOISE AND VIBRATION M M INSPECTION FOR LEAKS S N S N S N TIGHTENIN...

Page 15: ...Extend the duration of stops in motor operation or reduce the number of starts ASYMMETRY OF THE CURRENT STRENGTH IN THE SUPPLY WIRES Interruption in connection or in winding Short circuit in the field...

Page 16: ...W Tech S r l Direzione e Amministrazione Via Moglio 18 2 40037 Sasso Marconi BO ITALY T 39 051 6783010 F 39 051 6784941 info w tech it www w tech it...