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Maintenance and upkeep:

Maintenance and service work should only be carried out by competent technicians with experience and

qualifications in the handling of A2L refrigerants.

The appliance should always be disconnected from the power supply before any work is carried out.

Before maintenance work is carried out all technicians should:

a) Carry out safety checks to ensure the risk of ignition is minimised.

b) Operate with controlled procedures to minimise the risk of flammable gas or vapour being present while

    work is carried out.

c) Ensure all staff in the local area are instructed in the nature of the work being carried out.

d) Not work in confined spaces.

e) Check work areas with an appropriate leak detector prior to and during work to minimise the risk of

    flammable atmospheres.

f) If any hot work is being carried out an appropriate fire extinguisher should be available to hand. Either

   Co2 or dry powder.

g) All possible ignition sources should be kept sufficiently far away from the work area.

h) Adequate ventilation shall be provided when breaking into the refrigerant system. The ventilation should

    safely disperse any released refrigerant to the external atmosphere.

i) When replacing electrical components only spare parts specified by the manufacturer shall be used.

j) Electrical work should be preceded with initial safety checks:

i) All capacitors need to be discharged in a manner that avoids sparks.

ii) No live electical components or wiring should be exposed while charging, recovering or purging the 

    system.

iii) There is continuity of earth bonding.

k) Under no circumstances should potential sources of ignition be used in the searching for or detection

    of refrigerant leaks.

l) On discovery of a leak all refrigerant should be removed before a repair is carried out. The manufacturer

   recommends purging the circuit with an inert gas before brazing.

m) Before charging ensure the refrigeration system is earthed.

SHEET 11 OF 17

Содержание MCSe 7.3-21

Страница 1: ...MCSe 7 3 PORTABLE WATER COOLED AIR CONDITIONER PRODUCT MANUAL MCSe 7 3 21 SHEET 1 OF 17 ...

Страница 2: ...mportant information P3 4 Technical specification P4 System description P5 Installation P5 6 7 Operation P7 9 Adding Propylene Glycol P10 Maintenance P11 12 Spare parts P13 15 Wiring diagrams P16 Pump curves and data P17 SHEET 2 OF 17 ...

Страница 3: ... the load fully unwound and never run through water or over sharp edges Always transport and store in an upright position The fan motor on the external heat exchanger is electronically controlled and is liable to start and stop without notice Maximum operating temperature 35 C Minimum operating temperature 15 C This is a class 1 appliance and must be Earthed The system is supplied with a water onl...

Страница 4: ...sources for example open flames an operating gas appliance or an operating electric heater Do not pierce or burn Be aware that refrigerants may not contain an odour This appliance contains an A2L refrigerant classified as mildly flammable Always read the user and service manual before operation The minimal charge within the appliance does not require a minimum room size for safe operation SHEET 4 ...

Страница 5: ... external heat exchanger and connect to the power supply Site the main cooling unit and external heat exchanger in the desired locations Ensure the locking castors are engaged on the main unit before operation The main cooling unit external heat exchanger and connecting hose assembly are fitted with auto sealing water connectors to minimise water loss during connection and disconnection It should ...

Страница 6: ...onnectors Electrical connector Condensate hose to fit to main cooling unit Electrical connector Condensate hose connector Water connectors Electrical connector Condensate hose connector Water connectors Main cooling unit External heat exchanger Connection hose assembly Water and electrical connections SHEET 6 OF 17 ...

Страница 7: ...esigned to protect the compressor from repeated start stop cycles The compressor delay is activated each time power to the compressor is switched off be that at the wall socket the rocker switches or the thermostat Set the digital thermostat to the desired temperature This is the set point During normal running the digital thermostat read out shows the ambient temperature of the room See P8 for se...

Страница 8: ...oom temperature How to see the set point The appliance comes factory set at 15 C Push the SET key for more than 2 seconds to change the set point value The value of the set point will be displayed and the C LED starts blinking To change the set point value push the up or down arrows within 10 seconds The minimum set point is 15 C To memorise the new set point value push SET key or wait for 10 seco...

Страница 9: ...ed during a defrost cycle when the external heat exchanger fan will be switched off The appliance will start in defrost mode before cooling commences Low pressure warning This lamp will be illuminated if there is a loss of refrigerant gas The machine should not be operated if this lamp activates This will automatically shut down the compressor High pressure warning This lamp will be illuminated wh...

Страница 10: ... fluid is approximately 100mm below the top of the filler spout 7 Replace the filler cap The appliance is now ready for installation and operation Ensure the machine is disconnected from the power supply before following this procedure Ensure that all local regulations are adhered to when using Propylene Glycol The water cooled split has a fluid capacity of approximately 10 litres when fitted with...

Страница 11: ...e available to hand Either Co2 or dry powder g All possible ignition sources should be kept sufficiently far away from the work area h Adequate ventilation shall be provided when breaking into the refrigerant system The ventilation should safely disperse any released refrigerant to the external atmosphere i When replacing electrical components only spare parts specified by the manufacturer shall b...

Страница 12: ...of the machine Clean with compressed air 3 Regularly inspect the mains cable and plug for signs of damage or wear Do not operate the machine with a damaged mains cable 4 Check that the castors are running freely and that the breaking mechanisms are working correctly 5 Inspect the connection hose assembly for signs of wear or damage Replace if necessary Troubleshooting guide Routine checks SHEET 12...

Страница 13: ...24 23 26 27 29 36 35 34 33 13 12 10 9 8 4 6 20 5 1 19 18 17 11 16 21 22 15 14 3 7 2 37 30 28 25 32 MCWS250 Main cooling unit Spare parts 31 SHEET 13 OF 17 ...

Страница 14: ...41 49 42 44 45 46 39 38 40 43 50 48 External heat exchanger Spare parts SHEET 14 OF 17 ...

Страница 15: ...Spare parts Cont d SHEET 15 OF 17 ...

Страница 16: ...Wiring diagram Live circuit MCSe7 3 21 Wiring diagram Neutral and Earth circuit MCSe7 3 21 SHEET 16 OF 17 ...

Страница 17: ...QB70 water pump curve Condensate pump curve Condensate pump flow rates l h SHEET 17 OF 17 ...

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