What should be checked during the site acceptance of clean air equipment?

After the clean air equipment arrives at the site, on-site acceptance is the first confirmation step before installation. The on-site acceptance focuses on whether the equipment is delivered as ordered, whether it is damaged during transportation, and whether the configuration is consistent with the drawings. It and the post-installation clean performance acceptance are two different stages and cannot be mixed together.

If the on-site acceptance is carried out clearly, transportation damage, configuration errors and missing data can be discovered in advance and rework after installation can be reduced. The following will start from the order verification, appearance inspection, filter status, interface conditions, and data traceability.

First check the order model, quantity and version

The first step when entering the market is to check the order information:

• Equipment models and specifications;

• delivery quantity;

• Configuration version and order number;

• Accessories and spare parts list.

Inconsistent models or versions may result in inability to match site conditions after installation. To check device parameters and versions, please refer to How to write technical specifications for clean air equipment procurement? , first confirm the technical version correspondence.

Check appearance and packaging status

The transportation process may cause cosmetic damage or damage to the packaging. Inspections include:

• Whether the box is deformed or bruised;

• Whether the coating or surface treatment is intact;

• Whether the packaging is damp or damaged;

• Are parts loose or displaced?

Cosmetic problems should be recorded and photographed, and addressed before installation if necessary. Insufficient maintenance channels will affect subsequent maintenance. This is what later expenditures will be increased due to insufficient maintenance channels , and the installation conditions should also be confirmed simultaneously. There is a more detailed analysis of

Filter condition and shipping damage

Filters are components that are easily damaged during transportation. On-site inspection should include:

• Whether the filter packaging is intact;

• Whether the filter material is damaged or damp;

• Whether the border is deformed;

• Is the sealing strip intact?

Filter status affects performance after installation. If damaged in transportation, it should be replaced or disposed of before installation. For verification of filter installation and sealing, please refer to How does the FFU appearance size match the ceiling module? , the status of the installation interface should also be confirmed.

Interface dimensions and installation conditions

When entering the site, you should check the installation interface of the equipment:

• Overall dimensions and installation standards;

• Ceiling module or mounting opening;

• Air inlet, return air and power interface;

• Control cables and communication interfaces.

The interface size does not match and may require adapter or modification during installation. For verification of working points, please refer to Why should we look at the complete performance curve when selecting FFU? , to ensure that it can run as designed after installation.

Power supply and control configuration

The power supply and control configuration should be checked on a unit-by-unit basis:

• voltage, frequency and number of phases;

• Control methods and functions;

• Speed ​​regulation and linkage interface;

• Status monitoring and alarming.

When multiple devices require zone control or group control, you should confirm that the interfaces and protocols are consistent. To check the control configuration, please refer to FFU group control system。

Attached information and serial number traceability

The accompanying information should also be collected for site acceptance:

• Factory test records;

• Performance data and curves;

• Installation and operating instructions;

• Certificates and calibration information;

• Equipment number and configuration list.

The equipment number should correspond to the order and test records to facilitate subsequent traceability. Missing information may affect installation and acceptance. For the relationship between factory data and on-site acceptance, please refer to What are the differences between factory testing and on-site acceptance?。

The difference between on-site acceptance and post-installation acceptance

On-site acceptance checks confirm the delivery status of the equipment, and post-installation acceptance checks confirm system performance. The inspection items and judgment standards of the two are different.

Attention for entry acceptance:

• order consistency;

• Shipping status;

• Configuration integrity;

• The information is complete.

Pay attention to the acceptance after installation:

• Install seals and interfaces;

• Air volume and pressure difference;

• filter and system performance;

• Cleanliness and airflow organization.

Records of the two stages should be kept separately. For preparations for post-installation acceptance, please refer to What preparations need to be completed before clean room acceptance?。

Logging and problem handling

On-site acceptance should be recorded, including:

• Inspection items and results;

• Issues found and photos;

• Processing methods and responsible persons;

• Result of re-examination after processing.

Problems should be dealt with before installation to avoid affecting subsequent processes. Records are also the basis for subsequent traceability.

Project judgment example

When a certain project came on site, it was discovered that the filter frame was deformed and air leakage occurred after installation. Adjustment method: Record and replace damaged filters during on-site inspection, and re-detect leaks after installation. After adjustment, the seal is normal.

Another project did not check the control protocol when it entered the site. After installation, it was discovered that some equipment could not be connected to the group control system. Adjustment method: Check the control configuration and protocol according to the order when entering the site, and access them uniformly after installation. After adjustment, the system control is normal.

These two situations illustrate: the order, appearance, filter, interface and information should be checked during the site acceptance, and problems should be dealt with before installation.

Key points for selection and acceptance inspection

Aili industrial equipment supporting support

On-site acceptance is the first confirmation before installation. Aili Industrial has collaborative capabilities in the assembly of fans, motors, filters, control systems and complete machines. It can check the equipment model, filter status, interface size, control function and accompanying information based on the order configuration and on-site installation conditions to help connect on-site inspections with subsequent installation and reduce rework caused by transportation damage or mismatched configurations.