background image

I&O manual

 

9

 

 

Preliminary checks before startup

 

Check for the presence of air in the water system.

 

 

Before starting up the unit, make sure that:

 

 

the unit is positioned correctly;

 

 

the  flow  and  return  pipes  of  the  water  system  are  correctly 
connected;

 

 

the pipes are clean and free of air;

 

 

the  unit  falls  correctly  towards  the  drainage  outlet  and  the 
trap;

 

 

the heat-exchangers are clean;

 

 

the electrical connections are correct;

 

 

the screws holding the cables are well tightened;

 

 

the supply voltage is as required;

 

 

the power consumption of the blower is correct and does not 
exceed the maximum permitted.

 

 

 

3.2.4  Maintenance

 

 

remove the casing of the machine (on units I and II );

 

start the system and run for a few minutes;

 

stop the system;

 

slacken  the  bleed  screw  on  the  inlet  manifold  and 

bleed the air.

 

Repeat the operation several times until no more air 

comes out of the system.

 

 

 

 

At the end of the season

 

 

Drain the water system (for all heat exchangers).

 

 

To  avoid  the  risk  of  rupture  due  to  freezing,  it  is 
advisable  to  drain  the  water  from  the  system  at  the 
end of every season.

 

 

Electrical Circuit

 

 

The  following   operations   are   recommended   for   the 
maintenance of the electrical circuit:

 

 

 

 

DANGER!

 

 

CAUTION

 

 

check  the  unit  's  power  absorption  using  a  clip-on 
ammeter  and  compare  the  reading  with  the  values 
shown on the documentation;

 

Maintenance work must only be carried  out  by  qualified

 

technicians authorized to work on air-conditioning and 
refrigeration systems. Use suitable work gloves.

 

Do not introduce pointed objects through the air intake grilles. 

Disconnect the power supply before cleaning and maintenance.

 

Use dry cloth to clean the unit.

 

 

Always  disconnect  the  unit  from  the  mains  power  supply  at 
the  main  isolator  switch  before  carrying  out  maintenance 
work  or checks. Make sure that no  one accidentally supplies 
power  to  the  machine,  lock  the  main  switch  in  the  Off 
position.

 

 

SCHEDULED MAINTENANCE 

Once a month

 

 

Check the state of cleanliness of the air filters.

 

The  air  filters  are  made  of  fiber  and  are  washable  in 
water.  The  state  of  cleanliness  of  the  filters  must  be 
checked regularly at the start of the operating season and 
monthly.

 

 

Every six months

 

 

Check the state of cleanliness of the heat-exchanger  and 
the  condensation  drain-tube.  With  the  unit  switched  off, 
remove the casing of the machine  and check the state of 
the  heat-exchanger  and  the  condensation  drain-tube.  If 
necessary:

 

inspect and, if  necessary, tighten the electrical 

contacts and terminals.

 

 

NON-SCHEDULED MAINTENANCE 

Replacement of the blower assembly

 

In  the  case  of  burnout  of  the  blower  electric 
motor, it  is necessary to replace the entire blower 
assembly.

 

Procedure for removal of the blower:

 

Remove the casing (on units I and  II)

 

Disconnect the electrical supply cable from the 

blower;

 

Remove  the  screws  on  both  sides  which  hold  the 

blower to the structure of the unit;

 

Take out the blower.

 

remove  any  foreign  bodies  from  the  finned  surface 

which may obstruct air flow;

 

clean off the dust with a jet of compressed air;

 

wash and brush, gently, with water;

 

dry with a jet of compressed air;

 

check  that  there  are  no  obstructions  in  the 

condensation  drain  tube  which  could  prevent  the 
normal flow of water.

 

 

 

Fig.3-11

 

 

 Procedure for refitting the blower is a reversal of the 
above.

 

Summary of Contents for KFC-S-2T-250D

Page 1: ...il Unit KFC S 2T 250D KFC S 2T 400D KFC S 2T 500D KFC S 2T 900D KFC SE 2T 250D KFC SE 2T 400D KFC SE 2T 500D KFC SE 2T 900D Thank you very much for purchasing our fan coil unit before using your unit please read this manual carefully and keep it for future reference ...

Page 2: ......

Page 3: ...t of refrigerant leakage Contact the place of purchase for more information Excessive refrigerant in a closed ambient can lead to oxygen deficiency Use the attached accessories parts and specified parts for installation otherwise it will cause the set to fall water leakage electrical shock and fire The appliance must be installed 2 3m above floor The appliance shall not be installed in the laundry...

Page 4: ...sary Don t install the air conditioner in the following locations There is petrolatum existing There is salty air surrounding near the coast There is caustic gas the sulfide for example existing in the air near a hot spring The Volt vibrates violently in the factories In buses or cabinets In kitchen where it is full of oil gas There is strong electromagnetic wave existing There are inflammable mat...

Page 5: ... Built in version II VERSION I Fig 2 2 2 The phenomenon is normal that the surface of air conditioning may condense water when the relative larger humidity in room please close the door and window 3 Optimum performance will be achieved within these Supply voltage 220 240V 1ph 50Hz Finned coil type heat exchanger consisting of copper tubes and aluminum fins with connections on the left reversible t...

Page 6: ...ntroller can be only installed in 3 way valve side Information about further risks and unavoidable hazards installation manual for controller DANGER Always switch off the electric power before beginning cleaning or maintenance operations Do not spill water on the unit In versions with casing it is possible to clean the outside of the unit For cleaning use a soft cloth dampened with water and alcoh...

Page 7: ...LATION The units should only be moved and lifted by specialized personnel trained in these operations Check on arrival that the unit has not been damaged during transport and that it is complete with all its parts DANGER Movement of the unit should be performed with care in order to avoid damage to the external structure and to the internal mechanical and electrical components Also make sure that ...

Page 8: ... according to national or local rules in force at the time of installation For installation follow the instructions set out below Remove the external casing in versions I and II unscrewing the screws which secure it to the structure as following indicated Fig 3 2 Version a a b Fig 3 4 b a a Fig 3 3 Mark out the fixing points on the wall or ceiling either by marking through the drillings in the uni...

Page 9: ...e drainage connector on the unit How to turn the coil round from fittings on the left standard to fittings on the right The unit is supplied as standard with connections to the coil on the left It is possible however to turn the coil round so that the connections are on the right The operation of turning the principal and supplementary coils round can be carried out with the unit in situ but it is...

Page 10: ...qualified personnel in compliance with the regulations in effect in the country where the unit is installed The company shall not be held liable for damage to persons or property caused by incorrect electrical connection The power cord type designation is H05RN R or above H07RN F This appliance can be children aged from 8 years and above and persons with reduced physical sensory or mental capabili...

Page 11: ...intake grilles Disconnect the power supply before cleaning and maintenance Use dry cloth to clean the unit Always disconnect the unit from the mains power supply at the main isolator switch before carrying out maintenance work or checks Make sure that no one accidentally supplies power to the machine lock the main switch in the Off position SCHEDULED MAINTENANCE Once a month Check the state of cle...

Page 12: ...t to adhere scrupulously to the following procedures The unit should only be dismantled by a firm authorized for the disposal of scrap machinery The unit is composed of materials considered as secondary raw materials and the following conditions must be observed 1 If the system has antifreeze as an additive it must not be just dumped because it causes pollution It should be collected and suitably ...

Page 13: ...Fig 4 1 46 105 55 140 D Fig 4 2 185 207 Fig 4 3 150 150 Fig 4 4 Table 4 1 VERSION I 150 250 300 400 450 500 600 800 900 A mm 800 800 1000 1000 1200 1200 1500 1500 1500 B mm 584 584 784 784 984 984 1284 1284 1284 C mm 500 500 700 700 900 900 1200 1200 1200 D mm 526 526 726 726 926 926 1226 1226 1226 ...

Page 14: ...46 105 D B Fig 4 6 A C 185 Fig 4 7 Fig 4 8 Table 4 2 VERSION 150 250 300 400 450 500 600 800 900 A mm 550 550 750 750 950 950 1250 1250 1250 B mm 526 526 726 726 926 926 1226 1226 1226 C mm 500 500 700 700 900 900 1200 1200 1200 D mm 500 532 732 732 932 932 1232 1232 1232 ...

Page 15: ...4G M 16mm Power supply 220 240V 1ph 50Hz In the following conditions ambient temperature 27 C D B 19 CW B temperature of inlet water 7 C with t5 C at high speed In the following conditions ambient temperature 20 C temperature of inlet water 70 C with t10 C at high speed The A weighted sound pressure level is below 70dB soundpressurelevelindB A refers to a measurement taken at 1m from the point of ...

Page 16: ...MD15IU 015CW DZ1 16126200A06812 ...

Page 17: ...I O manual 15 ...

Page 18: ......

Page 19: ...I O manual 17 ...

Page 20: ......

Reviews: