Clean room cabinet air handling unit

Clean room cabinet air handling unit

Before the installation of the cabinet-type air handling unit in the clean room, it is necessary to determine the hoisting position of the unit, and select the beam and other entities that can fix the boom and bear the weight of the corresponding unit. Be sure to pay attention to the strength and reliability of the bearing body. It is necessary to ensure that there is no less than 1.2m of cloth around the unit...

Text label: clean room construction, clean room design, cabinet air handling unit

Clean room cabinet type air handling unit

Before the installation of the cabinet-type air handling unit in the clean room, it is necessary to determine the hoisting position of the unit, and select the beam and other entities that can fix the boom and bear the weight of the corresponding unit. Be sure to pay attention to the strength and reliability of the bearing body. It is necessary to ensure that there is no less than 1.2m around the unit for piping, dismantling the filter screen and maintenance space; after the unit is hoisted in place, use a round steel not less than Φ12 to install and position it. There should be a vibration damping device on the boom; for the unit installed on the ground, in order to reduce the transmission of vibration of the unit, it is recommended to place vibration damping pads under the base of the unit; The level error of the angle line should not exceed 5mm. If the foundation is not level, it may lead to poor drainage of condensed water.

The user of each air-conditioning unit should provide an independent power supply with an air circuit breaker. The grounding wire of the electric control cabinet must be connected to the system grounding point. The grounding impedance must meet the requirements of national and regional safety regulations and power regulations; control fans Protection devices such as phase loss protector, overload protector and short circuit protector must be installed in the running electric control cabinet to ensure that the power supply can be automatically disconnected in the event of phase loss of the fan motor power supply, excessive motor current, short circuit, etc. Fan motor safety User's electricity safety; the power supply of the air-conditioning unit should be powered separately from the welding equipment and other lines to avoid excessive voltage fluctuations affecting the normal operation of the air-conditioning unit; the control and power lines arranged on site must use copper wires. Before starting the unit, check whether the unit has loose parts; check whether the electrical wiring is correct, be sure to pay attention to the lack of phase; check the air duct system, open all fire dampers, adjust each regulating valve to the normal position, and check each air duct to ensure that There is no foreign matter, so as to avoid blockage of the pipeline, foreign matter entering the unit and cause damage to the unit; open the water valve, open the water pipeline, and the air release valve on the unit's water collection pipe at the same time, remove the air in the pipeline, and release all the air after exhausting the air. The valve is closed; check whether the flow direction of the water system is correct, turn the fan impeller by hand, and check whether the impeller is in contact with the fan casing; the design working pressure of the water coil is 1.6MPa, if the operating water pressure exceeds the pressure bearing capacity of the coil, it will There are hidden dangers such as leakage and rupture of the coil; when debugging in winter, pay attention to the anti-freezing of the coil, and the hot water of not lower than 60°C must be circulated to the unit coil, and the water flow rate in the coil is not lower than 1m/s. Do not run temporarily, please drain the water and add antifreeze. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for dust-free workshops and sterile workshops.

The dust-free pharmaceutical cleanroom unit starts the unit. Before starting the unit for the first time, you need to jog the fan, and then open the inspection door to check whether the rotation direction of the fan impeller is the same as the mark. If it is the opposite, you need to replace the power phase sequence; start the fan and monitor the running sound Check whether it is normal; measure the starting current and running current; check the protection device and control the shutdown according to the schedule; observe the temperature change and flow change of cold and hot water; record the debugging situation, and can only be put into operation for a long time after the debugging is qualified; Power-on operation is prohibited before operation; the multi-fan unit must ensure that all fans are turned on and running synchronously, and the original electrical wiring must not be changed without permission; once the unit is put into operation, the power phase sequence must be kept unchanged.

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