How to plan trial installation and switchover when FFU transformation can only be shut down in stages?
What are the difficulties in phased transformation?
Clean room FFU renovation sometimes cannot be completed with a one-time shutdown. Tight production tasks, processes that cannot be interrupted for long periods of time, and areas that are interconnected may all require transformation to be carried out in stages. The difficulty of phased transformation is that the construction area and the operating area coexist. Construction activities may affect the cleanliness and air flow of the operating area. The switching process needs to be completed without affecting production.
If phased transformation is not planned in advance, it is easy to cause the spread of construction pollution, substandard cleanliness after switching, mismatch between old and new equipment interfaces, or recovery time exceeding expectations. Therefore, a phased remodel requires more careful planning than a one-time remodel.
Aili Industrial has complete production capabilities in FFU complete machines and transformation supporting equipment, and can provide equipment and support to meet the phased transformation needs of the project. For the basic structure of the FFU machine, please refer toAili Industrial FFU fan filter unit。
Why should trial fitting be done in advance?
Trial installation is an important preparatory step for phased transformation. Through trial installation, you can confirm whether the new FFU matches the original ceiling, installation frame, filter, electrical wiring and communication interface before the official batch switch. If problems are found during trial installation, adjustments can be made before batch transformation to avoid affecting subsequent construction.
The trial installation should select representative locations to cover different structures and interface types. The trial installation includes: verification of installation dimensions; sealing surface fit; filter installation; electrical wiring; controller and communication; air supply and operating status.
Trial installation records should be kept in detail as a basis for batch modification. If the project uses custom FFU or special structures, trial assembly is even more important. For locations that require detachable or ultra-thin structures, you can refer toDetachable FFU andThe ultra-thin FFU understands the fitting requirements of different structures.
How to plan regional isolation
During phased renovation, the construction area needs to be isolated from the operating area. Isolation methods can be temporary partitions, soft curtains, differential pressure control or air flow separation. The purpose of isolation is to prevent construction dust and particles from entering the operating area while maintaining the cleanliness of the operating area.
Regional isolation should clearly define boundary locations and isolation methods. The construction area can maintain a slight negative pressure to avoid dust spillage. Positive pressure can be maintained in the operating area to prevent outside air from entering. If two areas share return air or a mezzanine, make sure the airflow does not cross.
The isolation plan should be confirmed before renovation, and the isolation effect should be checked during the construction process.
How to switch between power supply and control
Phased retrofits involve switching of power supply and controls. The new FFU may need to be connected to the original distribution circuit or a new circuit. If the old and new FFU share a group control system, you need to confirm whether the communication protocol and address allocation are compatible.
When switching power supply, the scope of power outage and recovery time should be confirmed. If the power supply needs to be cut off in the construction area, it should be confirmed that it will not affect the operating area. When switching control, you should confirm whether the old and new FFU can run in the same group control system, or whether partition control is required.
For useFFU/EFU group control touch screen controller orFor FFU computer group control system projects, it is recommended to confirm system compatibility and switching plans before modification.
How to restore verification
After each phase of switching is completed, recovery verification is required. The verification includes: new FFU installation seal; air supply volume and wind speed; filter leak detection; electrical wiring and grounding; controller and communication status; area cleanliness and pressure difference; construction area cleanliness status.
After passing the verification, the area can resume normal operations before entering the next stage. If the verification fails, it should be dealt with in time and then restored to avoid accumulation of problems.
How to ensure quality when construction time is short
Phased renovations typically have a shorter construction window. Short construction time is no reason to skip sealing, leak detection or commissioning. It is recommended to make preparations before construction, including equipment pre-inspection, tool preparation, personnel division of labor and construction step drills. Construction should be carried out step by step, and key processes cannot be omitted. After construction, confirm according to the verification list.
If the construction window is indeed limited, some preparation work can be brought forward, such as trial installation, pre-wiring and pre-commissioning. During batch switching, installation and connection are completed centrally, and verification and debugging proceed as planned.
Issues that should be confirmed in advance during project communication
During the FFU phased transformation planning stage, it is recommended to confirm the following with the manufacturer and construction party: transformation scope and stage division; trial installation location and content; regional isolation plan; power supply and control switching method; compatibility of old and new FFU; construction window and time schedule; recovery verification content; exception handling process; whether the manufacturer is required to be on-site to support.
If you are planning a phased renovation of FFU, you can visitAili Industrial FFU fan filter unit to learn about the complete machine configuration, you can also contact Aili Industrial to obtain support for the transformation plan.
in conclusion
The phased transformation of FFU requires advance planning of trial installation, regional isolation, power supply control switching and recovery verification. Short construction time is no reason to skip sealing or commissioning. Trial installation pre-installation and preparation work can help batch switching go smoothly, and recovery verification can ensure the quality of each stage of transformation.
Aili Industrial has complete production capabilities in FFU complete machines and transformation supporting equipment, and can provide equipment and support to meet the phased transformation needs of the project. If you need to know more about the FFU transformation plan, you can visitAili Industrial FFU fan filter unit , you are also welcome to contact Aili Industrial for project support.
