2
MARKING
This product marked conforms to the essential requirements of the Directives:
- Low voltage no. 73/23 EEC, modified 93/68 EEC.
- Electromagnetic Compatibility no. 89/336 EEC, modified 92/31 and 93/68 EEC.
- Pressure Equipment Directive No. 97/23/CE.
SUMMARY
1-Generalities ................................................................................... 2
2-Dimensions.................................................................................... 3
3-Installation ..................................................................................... 4
4-Connections................................................................................... 4
5-Options .......................................................................................... 7
6-Starting ........................................................................................ 12
7-Operation of µCHILLER electronic control .................................. 13
8-Maintenance ................................................................................ 19
9-Pressure curves........................................................................... 22
APPLIANCES FILLED WITH R 407 C
R 407 C
• Fluid R 407 C, as opposed to R22, is not a pure fluid but a blend
composed of:
- 23% R 32 + 25% R 125 + 52% R 134 A.
• The compressors approved for operation with this fluid are filled
beforehand with polyalcohol oil.
Contrary to mineral oil, it is very hygroscopic: it absorbs the
humidity of the ambient air very quickly. This can modify its
lubricant properties and lead in time to the destruction of the
compressor.
MAINTENANCE INSTRUCTIONS
1 - Never add oil to the appliance; the compressor is filled with
polyalcohol oil, a special oil which cannot tolerate the presence
of other oils.
2 - The instruments used for:
- filling,
- pressure measurements,
- emptying under vacuum,
- recovering the fluid,
must be compatible and only used for the R 407 C fluid.
3 - The weight of the refrigerant contained in the storage bottle must
be checked constantly. Do not use it from the moment the
remaining weight is less than 10% of the total weight.
4 - In the case of a new charge:
- do not use the charging cylinder,
- use a balance and a dip pipe type R 407 C cylinder,
- charge the weight of R 407 C as per the value indicated on the
unit’s identification plate,
- IMPORTANT: see instruction 3 above.
5 - The charge must be undertaken in liquid phase.
6 - In case of leakage, do not complete the charge: recover the
remaining refrigerant for recycling and perform a total charge.
Recovery, recycling or the destruction of the fluid must be done
in compliance with the laws in force in the country concerned.
7 - If the refrigerant circuit is opened, you must:
- avoid the entry of air into the circuit as much as possible,
- replace the filter drier,
- perform the "vacuum operation" at a minimum level of 0.3
mbar (static).
1 - GENERALITIES
• The equipment must be installed, started-up and maintained by authorised and qualified personnel, in accordance with local
rules and professional standards.
• The recommendations and instructions presented in the manual and on labels must be followed.
1.1 - GENERAL SUPPLY CONDITIONS
• The units must be securely anchored to the truck’s trailer during transport.
• Generally speaking, the material is transported at the consignee’s risk.
• In the event of damages during transport, the consignee must notify the carrier by registered letter within three days following
delivery.
1.2 - VOLTAGE
• Before carrying out any operation, check that the voltage indicated on the unit corresponds to the mains voltage.
• Before servicing the unit, ensure that the electrical power supply has been shut off and warning signs installed.
1.3 - TECHNICAL AND PHYSICAL CHARACTERISTICS
• See technical data.
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