42
Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the purpose and to the correct
specification. At all times the manufacturer´s maintenance and service guidelines shall be followed. If in
doubt consult the manufacturer´s technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants:
- the charge size is in accordance with the room size within which the refrigerant containing parts are
installed;
- the ventilation machinery and outlets are operating adequately and are not obstructed;
- if an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the pres-
ence of refrigerant;
- marking to the equipment continues to be visible and legible. Markings and signs that are illegible
shall be corrected;
- refrigeration pipe or components are installed in a position Where they are unlikely to be exposed to
any substance which may corrode refrigerant containing components, unless the components are con-
structed of materials which are inherently resistant to being corroded or are suitably protected against
being so corroded.
Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and component
inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be
connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately
but it is necessary to continue operation, an adequate temporary solution shall be used. This shall be
reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include:
• that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;
• that no live electrical components and wiring are exposed while charging, recovering or purging the
system;
• that there is continuity of earth bonding.
Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be disconnected from the equipment
being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an elec-
trical supply to equipment during servicing, then a permanently operating form of leak detection shall be
located at the most critical point to warn of a potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on electrical components, the
casing is not altered in such a way that the level of protection is affected. This shall include damage to
cables, excessive number of connections, terminals not made to original specification, damage to seals,
Summary of Contents for DH5020
Page 2: ...1 4 7 5 6 2 3...
Page 3: ...9 8 15 10 21 11 12 13 19 18 17 14 16 10 20 Humidity setting Humidity setting...
Page 62: ...62 UFESA 8 30 cm...
Page 63: ...63 20 cm T F 250V 3 15 4 m2 R290 60g...
Page 64: ...64...
Page 65: ...65 0 C...
Page 66: ...66 B B TRENDS SL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1...
Page 67: ...67 50 50 70 70 3 0 24 30 80 14 0 24 0 24...
Page 68: ...68 3...
Page 69: ...69 2 30 0 C 10 C 30...
Page 70: ...70 2 4...
Page 71: ...71 Le volume d...
Page 72: ...72 2012 19 C02...
Page 73: ...73...
Page 74: ...74...
Page 75: ...75 25...
Page 76: ...76...
Page 77: ...77 a b c d e f g h 80 i...
Page 78: ...78 j k...
Page 79: ...79...
Page 80: ...80 2 4 06 092R...
Page 81: ...81 UFESA 8 30 20 250 F T 3 15...
Page 83: ...83 0 B B TRENDS SL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21...
Page 84: ...84 30 ON OFF 2 4...
Page 85: ...85 ON OFF Continuous mode mode mode 3 2 0 30 10...
Page 86: ...86 C02...
Page 87: ...87 WEEE EU 91 2102...
Page 89: ...89 25...
Page 90: ...90...
Page 91: ...91 08...
Page 94: ...94 B B TRENDS SL e B B TRENDS SL 1999 44 B B TRENDS SL B B TRENDS SL...
Page 95: ...95 B B TRENDS SL 23 2003 B B TRENDS SL 2003 10 B B TRENDS SL...
