④工作场地应宽敞、通风、留有足够的退避空间，备有可靠的灭火设备。⑤开机

④ The work site should be spacious, ventilated, with sufficient escape space, and equipped with reliable fire extinguishing equipment. <br>⑤Adjustment and maintenance should be carried out according to the instructions of the user manual before starting the machine. The machine can be started under the condition of ensuring the safety of the man and the machine. After 2min to 3min of dry operation, the material can be fed without abnormal phenomena. <br>⑥The selection machine should be started in a static state. When restarting, it should be restarted after the machine has stopped steadily

(4) The work site should be spacious, ventilated, leave enough room for retreat, with reliable fire extinguishing equipment.<br>(5) Before starting the machine should be in accordance with the provisions of the instruction manual for adjustment and maintenance, in order to ensure the safety of the human machine can be turned on, empty operation 2min to 3min, no abnormal phenomenon can be feed.<br>(6) Select machine should be started at rest. When restarting, start the machine after it has stopped steady

④ The work site shall be spacious, ventilated, and sufficient retreat space shall be reserved, and reliable fire fighting equipment shall be provided.<br>⑤ Before starting, the machine shall be adjusted and maintained according to the operation manual. It can be started under the condition of ensuring the safety of human and machine. The material can be fed only after the air transport is transferred for 2min ~ 3min without any abnormal phenomenon.<br>⑥ The concentrator shall be started in a static state. When restarting, start again after the machine is stopped stably<br>