The manufacturer of tunnel fan suggests that the user should carry out detailed unpacking inspection and sampling inspection experiment before installing the fan. The specification, model, specification and performance parameters of tunnel fan shall comply with the provisions of the design scheme. Check the total number, position, model and specification of embedded parts, and carry out tensile pull test according to the provisions of the design scheme, which shall comply with the provisions of the design scheme.
During installation, ensure that the interval is consistent with the design scheme, and the fan center line is parallel to the tunnel construction center line. After installation, attention should be paid to the following new items:
1. The installation position of the fan is appropriate, the contact of each connecting surface is excellent, the connecting parts are reliable and free of looseness, the contact of the installation support between the two components is inseparable and firm, and the support of the standard parts is symmetrical.
2. The position of fan control cabinet is appropriate, the components are complete, the installation is firm, and the waterproof grade meets the requirements. The opening and closing of the control cabinet (box) is convenient, the wiring steam in the box and the serial number of the control circuit are complete and appropriate, and the connection between the embedded part pipe and the shell needs to be equipped with tight nuts; all installed equipment is appropriate, perfect, free of dirt, and the fitness and sports components are well lubricated.
3. The allowable error of longitudinal and transverse flatness of each component of tunnel fan exceeds the provisions of relevant standards, and the wiring of fan power distribution equipment and control circuit is appropriate and reliable; The insulation layer of electrical equipment and cables is excellent, and the grounding device meets relevant standards.
Before opening the fan, the tunnel fan manufacturer suggests that relevant staff solve the problem and carry out the following inspection:
1. Check whether the tunnel fan is reliable and whether the safety precautions are sufficient.
2. Check whether the lubricating grease of the fan is normal, turn the centrifugal impeller and check whether there is shell collision and insensitive rotation.
3. Check that the power switch of relevant electric air valve is timely and the feedback data signal is normal.
4. Check whether the driving power plug has been connected to the junction box of the fan normally.
5. Check whether the airtight door of the air chamber is closed tightly.
6. Check whether the airtight door of the air chamber is closed tightly.
7. Check the staff in the regulation area. Staff irrelevant to the regulation are not allowed to enter the regulation area (including quality motor control room, fan room, fan room, air duct and tunnel construction).
8. Check various safety precautions.
Use 500 megohmmeters to accurately measure the grounding resistance of the motor, and its value shall not be less than 0.5 megohm. Otherwise, solve the motor stator winding resistance of the motor and carry out dry impetuous solution. The temperature of dry impetuous solution shall not exceed 120 ℃.
The power circuit route and instrument equipment in the rolling bearing temperature alarm system and its electronic control system of the fan shall also be in a reasonable position. The wiring of the local control cabinet on site shall be appropriate to ensure that the operation of the tunnel fan shall be terminated anytime and anywhere during the trial operation.
