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How to confirm the EFU installation location? Equipment drawings, installation conditions and acceptance methods

Number of views: 5951 Author: Aili Industry Release time: 2027-04-09 Source: Ai Li Industrial

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How to confirm the EFU installation location? Equipment drawings, installation conditions and acceptance methods

How to confirm the installation position of EFU? It is not just to plug it wherever it is empty. The installation position directly changes the inlet resistance, box force, sealing state and air outlet distribution. If the installation position is wrong, no matter how beautiful the performance parameters are, the equipment cleanliness target may not be achieved after installation. To confirm the installation location, you must first check the equipment drawings, structural conditions, air flow paths and maintenance spaces together, then determine the benchmark, hole positions, supports and air inlet and outlet directions. Complete structural, electrical and maintenance space inspections before powering on, and then debug according to the agreed working conditions. Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. The installation standards, support conditions and complete machine interfaces can be checked in the same confirmation document according to the equipment drawings. This is why many equipment manufacturers will refer to the Aili Industrial structural instructions when confirming the EFU installation location.

First look at the equipment drawings: the datum and hole positions should correspond

The first step to confirm the installation location is to check the EFU confirmation drawing and the equipment general drawing on the same basis. Where is the installation surface on the equipment, which hole or surface is used as the positioning reference, what is the hole spacing and hole diameter tolerance, and whether the shape of the EFU and the air inlet and outlet can correspond. These should be confirmed at the drawing stage, rather than drilling on site during installation.

drawing item	What should be confirmed	FAQ
Installation baseline	Which side or hole of the device is positioned?	Drawings not marked with datum
Hole position tolerance	Hole spacing, hole diameter and allowable deviation	On-site drilling during installation
Air inlet and outlet	Orientation, size and flange form	Does not match device opening
shape space	EFU shape and internal clearance of the device	Only the length and width are given, not the height.

Ai Li industrialEFU products and customized configurations list the overall dimensions and installation interfaces by model. The equipment manufacturer can directly correspond to the specific model at the drawing stage, and stack the EFU confirmation drawing and the equipment general drawing together for verification instead of looking at the drawings separately.

Structural conditions: support, fastening and vibration reduction

The EFU is installed inside the equipment, and the support and fastening methods will affect the force and vibration transmission of the box. Whether the supporting surface is flat, whether the number of fastening points is sufficient, whether vibration damping pads are needed, and whether the box is deformed after installation, all should be confirmed before installation. When the support is insufficient, the vibration during EFU operation may be transmitted to the precision mechanism of the equipment, affecting the stability of the equipment itself.

Structural items	What should be confirmed	FAQ
support surface	Flatness and load-bearing capacity	Uneven support surface causes box deformation
Fastening method	Bolts, buckles or press frames	Insufficient fastening points
Vibration reduction measures	Whether vibration damping pads or isolation are needed	Vibration is transmitted to precision mechanisms
Installation order	Should I install the EFU first or other components first?	Wrong order leads to interference

In the EFU project, Aili Industrial checked the support and fastening conditions according to the equipment drawings, and wrote the structural requirements of the installation location into the confirmation drawing to avoid temporarily adding gaskets or patching holes during installation.

Airflow path: the air inlet and outlet cannot be blocked

The installation location determines the air inlet clearance and air outlet path of the EFU. When the air inlet is blocked by the structure, the inlet resistance increases, the fan working point shifts, and the air volume decreases; when the air outlet is blocked, the air supply cannot cover the target area, and the protection effect is compromised. When confirming the installation location, check whether there is enough clearance around the air inlet, whether the air outlet direction is aligned with the protection area, and whether the return air path is smooth.

airflow term	What should be confirmed	FAQ
Air inlet clearance	Available space around entrance	Obstructed by structures or cables
Wind direction	Is it aligned with the protected area?	Air supply deviates from target
Return air path	Is the return air smooth?	Blocked return air affects circulation
adjacent unit	The spacing between multiple EFUs	interfere with each other

Regarding the relationship between air inlet space and airflow performance, please refer toHow to confirm the EFU air inlet space? the equipment drawings, installation conditions and acceptance methods , confirm the air inlet clearance and installation location together.For the verification method in

Maintenance space: it must be installed but also able to be dismantled.

The EFU installation location also needs to be considered for maintenance. Filters need to be replaced, fans need to be serviced, and electrical connectors need to be plugged and unplugged, all of which require space. If it is installed too far in or is blocked by the structure, the filter cannot be removed during maintenance, or other parts must be removed before operation. When confirming the installation location, reserve space according to the actual size of the maintenance operation, rather than just looking at the static installation size.

Maintenance items	What should be confirmed	FAQ
Filter disassembly and assembly	Disassembly and assembly directions and required space	It cannot be replaced after installation
Fan maintenance	Access opening location and tool space	Need to disassemble other parts
Electrical connection	Terminal and cable insertion and extraction space	Can't reach in when wiring
cleaning channel	Are cleaning tools accessible?	Internal dust cannot be cleaned

Aili Industrial reserves space according to maintenance actions in the EFU structural design. When confirming the installation location, the equipment manufacturer can directly compare the maintenance dimensions and consider 'fitting in' and 'removing' together. Projects with limited space can refer toHow to choose ultra-thin EFU? space, air volume, static pressure, heat dissipation and maintenance points .Checking methods for

Electrical and Wiring: Location Determines Wiring

Mounting location also affects electrical wiring. From which direction the power cord enters, how the control wire is routed, whether the terminal is accessible, and where the grounding position is, all of these should be looked at together when confirming the installation location. If the location is not chosen well, the cable will have to go a long way, or the terminal will be blocked by the structure, making wiring difficult and later maintenance inconvenient.

Electrical items	What should be confirmed	FAQ
Power incoming line	Cable entry direction and reserved length	The cable is too far around or not long enough
control line	Routing paths and fixing methods	The cable is hit by moving parts
Terminals accessible	Can hands and tools be reached during wiring?	Terminal blocked by structure
ground	Grounding location and connection method	Unreliable grounding

For projects involving control linkage, please refer toHow to implement EFU local speed adjustment? wiring, parameters, control logic and debugging methods , confirm the installation location and electrical interface together.Wiring definitions in

Installation retest: Verify after location confirmation

Confirmation of the installation location does not end after matching the drawings. After the EFU is installed on the equipment, the air volume or wind speed, uniformity, power, noise, vibration and linkage status must be re-measured according to the agreed working conditions to confirm that the installation position does not cause the performance to deviate from the target. The retest data should be compared with the prototype data before installation. If the difference is large, check the air inlet clearance, air outlet shielding and sealing status instead of directly replacing the fan.

Retest items	What should be recorded	Basis for judgment
Air volume or wind speed	Actual measured values under target operating conditions	Compare with prototype data
Uniformity	Measuring point layout and deviation	Is the protection area coverage stable?
Power and noise	Power and noise corresponding to the operating point	Whether the device limit is exceeded
vibration	Vibration status after installation and fixation	Does it affect precision mechanisms?
Linkage status	Start/stop, speed adjustment, alarm feedback	Does it match the device controller?

In the EFU project, Aili Industries organized installation retests according to the equipment drawings and agreed working conditions, and verified the installation location, structural conditions and overall machine performance together, instead of just looking at the static installation dimensions. The equipment factory completes the matching of structure, power and control within the same manufacturing system, making it easier to maintain data consistency than cross-supplier coordination.

How to form executable confirmation results

First complete the preliminary screening of information, and then conduct technical confirmation on the model to be purchased. Include installation standards, hole position tolerances, support conditions, airflow paths, maintenance spaces and electrical wiring in the supplementary list, and organize comparisons after the supplier responds. The confirmed installation location, structural conditions and complete machine interface are used for order execution, and sample dimensions cannot be used to replace this project data. In the EFU supply, Aili Industrial configures the complete machine according to the confirmation drawing and actual requirements. The structure, filter, fan and control correspond to each item in the order list, which facilitates the equipment factory to confirm the installation position and settle it on the verifiable complete machine conditions.

Misunderstandings to avoid

It should be avoided to install only where there is space. It should be avoided to confirm that the drawing only shows the appearance without reference and tolerance. It should be avoided to ignore the air inlet clearance and air outlet shielding. It should be avoided to consider the maintenance space after installation. It should be avoided to consider the installation as qualified without re-testing after installation. After the EFU is installed on the equipment, it should not be operated directly according to the factory parameters. The equipment side resistance, inlet and outlet air conditions and control settings should be checked first, and retesting of the installation working conditions should be completed. Aili Industrial can first form a to-be-confirmed list according to the equipment drawings, listing the installation location, structural conditions and interface requirements together.

Key points for selection and acceptance inspection

Check items	Confirm key points
Equipment drawings	Correspondence to datum, hole position and tolerance
structural conditions	Support, fasten, dampen
airflow path	Inlet clearance, outlet direction, return air
maintenance space	Detachable and accessible for maintenance
Installation retest	Air volume, uniformity, vibration, linkage

Aili Industrial EFU selection and procurement support

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. The installation location, structural support and complete machine interface can be checked according to the equipment drawings within the same manufacturing system, instead of confirming the unit based on only one external dimension. The equipment factory completes the matching of structure, power and control within the same system, making it easier to maintain data consistency than cross-supplier coordination.

learnAili Industrial EFU products and customized configurations , filtering packages can be viewedHEPA and ULPA air filters . Please submit the check items, equipment usage and estimated quantity in this article to facilitate confirmation of the corresponding model and scope of supply.