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Forty five of "Regulations on maintenance of building fire fighting facilities"

Refrigeration unit

Inspection requirements:

a) The refrigeration unit shall be inspected monthly to ensure that there is no collision deformation and other mechanical damage, the surface is free of corrosion, the protective coating is intact, the name plate and the identification plate of the protected object are clear, and the protective cover, lead seal and safety sign of the manual operation device shall be complete;

b) The pressure sensor and liquid level sensor shall be calibrated once a year, and the error shall not exceed ± 1.0%;

c) The pressure and state of opening and re seating action of safety valve shall be inspected every year, which shall meet the design requirements or determined by referring to table 1.

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DB11/T 1620—2019

Maintenance method:

a) Clean the condenser fins with nitrogen or compressed air every month to keep them clean;

b) The refrigerant and oil should be replenished every six months;

c) The safety valve should be adjusted or replaced when the pressure and state of opening and resetting of safety valve are abnormal;

d) According to the cycle and method required by the product manual, replenish or replace the engine oil, refrigerant, refrigeration oil and other consumables, and replace the drying filter, vapor-liquid separator, sight glass and other components.

5.9.2.3 system components

Inspection requirements:

a) Check the system components every month to ensure that there is no collision deformation and other mechanical damage, the surface is free of rust, the protective coating is intact, the name plate and the identification plate of the protected object are clear, and the protective cover, lead seal and safety sign of the manual operation device shall be complete;

b) Check the pressure gauge and thermometer every month, which shall meet the design requirements or be determined according to table 1;

c) After the weight loss of all the containers, the output of carbon dioxide was simulated and checked every month;

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Forty five of "Regulations on maintenance of building fire fighting facilities"

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