A HEAT KIT FOR TESTING POINT DETECTORS. COMPRISING OF THE HEAD UNIT AND FIXINGS. THE HEAD UNIT IS MOUNTED ALONGSIDE THE POINT DETECTOR USING THE FIXING PROVIDED. IT IS CONNECTED TO, AND POWERED BY, THE CONTROL PANEL. WHEN A TEST STARTS A SMALL AMOUNT OF OIL IN THE HEAD UNIT IS WARMED UP USING AN ELECTRIC COIL POWERED THROUGH THE CONTROLLER. AS THE METAL TUBE HEATS UP, A TINY AMOUNT OF OIL IS DRAWN UP INSIDE THE TUBE IN TURN GETTING HEATED UP AND TURNS TO SMOKE. A FAN IS USED TO BLOW THIS SMOKE OUT, INTO THE POINT DETECTOR. THE HEAD UNIT IS MADE FROM ABS PLASTIC WITH A SMALL CIRCUIT BOARD. THE FIXINGS ARE MADE FROM MILD STEEL.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S: GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 8419 MACHINERY, PLANT OR LABORATORY EQUIPMENT, WHETHER OR NOT ELECTRICALLY HEATED (EXCLUDING FURNACES, OVENS AND OTHER EQUIPMENT OF HEADING 8514), FOR THE TREATMENT OF MATERIALS BY A PROCESS INVOLVING A CHANGE OF TEMPERATURE SUCH AS HEATING, COOKING, ROASTING, DISTILLING, RECTIFYING, STERILISING, PASTEURISING, STEAMING, DRYING, EVAPORATING, VAPORISING, CONDENSING OR COOLING, OTHER THAN MACHINERY OR PLANT OF A KIND USED FOR DOMESTIC PURPOSES; INSTANTANEOUS OR STORAGE WATER HEATERS, NON-ELECTRIC GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 841989 OTHER MACHINERY, PLANT AND EQUIPMENT; OTHER THAN FOR MAKING HOT DRINKS OR FOR COOKING OR HEATING FOOD CN CODE 84198998 OTHER THAN COOLING TOWERS AND SIMILAR PLANT FOR DIRECT COOLING (WITHOUT A SEPARATING WALL) BY MEANS OF RECIRCULATED WATER OR VACUUM-VAPOUR PLANT FOR THE DEPOSITION OF METAL ALSO CLASSIFIED IN ACCORDANCE WITH: SECTION NOTE 4 TO SECTION XVI