Code of Veterinary Practice For Poultry Processing Plant coils and, if applicable, the water used to defrost the coil. 6.7.4 On ceiling mounted cooling units, the drain water should be confined by suitable insulated drip trays directly connected to the drainage system. 6.7.5 Provision should be made so that during the defrost procedure, air circulating fans on the unit being defrosted can be switched off to prevent carryover of defrost water. 6.8 Thawing 6.8.1 A chiller used for thawing frozen carcass or carton product to allow boning or further processing should be equipped with machinery to maintain a maximum air temperature of 15°C during the entire thawing operation. 6.8.2 A recording thermometer should be installed to give a continuous record of the air temperature. 6.9 Condensation 6.9.1 Refrigerated rooms should be designed and operated in a way that prevents the formation and accumulation of condensate on overhead structures and ceilings. 6.9.2 Refrigerated departments should not be constructed above other departments unless the lower is to operate at temperature consistently below those of the upper. 6.9.3 Main refrigerant lines should not be routed through working areas. 6.9.4 Where forced draught unit coolers or air distribution ducting are located in the work area, both the drain trays and ducting should be insulated. 7.0 FREEZER FACILITIES AND COLD STORES 7.1 Introduction This section is applicable to freezer and cold store facilities on processing plants. This section refers to the following ‘types’ of freezers and cold stores: 24