Installation and commissioning of single-inflatable-airtight-doors requires sequential verification of site structural capacity, equipment delivery accessibility, mechanical assembly with pressure-seal validation, electrical control system integration, and final handover documentation completeness before operational turnover. Three critical procedures determine installation success: (1) measuring actual ceiling height and corridor width against equipment dimensions plus 300 mm rigging clearance to prevent delivery failure; (2) executing pressure decay testing at 6 bar supply pressure to confirm seal integrity below 0.1 bar per 15 minutes per ASTM E779 before system commissioning; (3) verifying all handover documents match actual equipment serial numbers and software versions before accepting the system from the manufacturer. Facilities managers must classify defects as critical (safety hazard or regulatory non-compliance), major (performance below specification), or minor (cosmetic) before signing the facility acceptance certificate, with critical defects resolved before acceptance and major defects resolved within 30-60 days post-acceptance. This guide provides step-by-step procedures for each installation phase, acceptance criteria tied to specific standards, and a verification checklist to prevent rework and ensure regulatory compliance.
This section confirms that the installation site meets minimum structural load capacity, ceiling height, and corridor width requirements before equipment delivery begins.
Single-inflatable-airtight-doors with stainless steel SUS304 frames (3.0 mm thickness) and internal steel reinforcement require a minimum structural load capacity of 500 kg/m² distributed across the door frame mounting surface. The receiving bay must have a minimum ceiling height equal to the equipment's overall height plus 300 mm for rigging clearance; architectural drawings alone are insufficient because actual installed ceiling height may be 100-150 mm lower than design height due to structural thickness deviations. Verify the receiving bay ceiling height by direct measurement at the equipment location using a laser distance meter or calibrated measuring tape, then compare the measured height to the equipment's shipping dimension (typically 2,100 mm for standard configurations) plus 300 mm minimum rigging clearance.
| Structural Requirement | Minimum Specification | Verification Method |
|---|---|---|
| Floor load capacity | 500 kg/m² distributed | Structural engineer certification or building code documentation |
| Ceiling height at receiving bay | Equipment height + 300 mm | Laser distance meter measurement at 3 points; record actual height |
| Corridor width (full delivery route) | Door width + 600 mm | Measure at 5-meter intervals; document narrowest point |
| Door opening clearance (all passages) | Largest equipment dimension + 200 mm | Measure height and width of all doors, elevators, and openings |
Measure the corridor width along the entire delivery route from the receiving bay to the final equipment location at 5-meter intervals using a calibrated measuring tape; the acceptance criterion is that corridor width must be at least 600 mm wider than the equipment's largest dimension to allow safe maneuvering. Measure all doors, elevator openings, and architectural transitions along the delivery route; each opening must be at least 200 mm larger than the largest equipment dimension. Document all measurements on an annotated layout drawing with photographs at each measurement point, signed by both the facilities manager and the equipment supplier's logistics representative. If any corridor section or doorway fails the clearance requirement, coordinate with the supplier to determine whether the equipment can be disassembled for delivery or whether the delivery route must be modified (e.g., removing temporary walls, using external rigging).
Acceptance is confirmed when the signed dimensional survey shows that all corridor sections meet the width requirement (equipment width + 600 mm minimum) and all doorways meet the opening requirement (largest equipment dimension + 200 mm minimum). Photograph each measurement point and attach photographs to the survey document. If any section fails clearance, obtain written confirmation from the equipment supplier that the equipment can be delivered via an alternative route or that the delivery method will be modified (e.g., partial disassembly, external rigging). The facilities manager and supplier representative must both sign the dimensional survey before equipment delivery is scheduled. Facilities that skip the dimensional survey and discover clearance problems on delivery day face 2-5 day delays and potential equipment damage during forced passage through undersized openings.
This section establishes the immediate post-delivery inspection protocol and verifies that all factory acceptance test (FAT) certificates match the delivered equipment's serial numbers.
Equipment must arrive with a complete delivery package including the delivery note with serial numbers, factory acceptance test (FAT) certificate, packing list, material certificates (SUS304 stainless steel grade certification, silicone rubber gasket material certification per Dow Corning specifications), and as-built drawings. Environmental conditions at delivery must be within 10-35°C ambient temperature and 30-70% relative humidity; equipment must not be exposed to direct sunlight during unloading. The 4-hour window from delivery to photo documentation is critical because damage claims typically have a 7-day filing deadline, and photographic evidence of shipping condition must be captured immediately to establish baseline condition before any handling or installation work begins.
| Delivery Document | Required Content | Verification Action |
|---|---|---|
| Delivery note | Equipment serial numbers, model, quantity | Cross-check serial numbers against purchase order |
| FAT certificate | Test date, pressure test results, serial number | Verify certificate serial number matches delivered equipment |
| Material certificates | SUS304 grade, gasket material (Dow Corning silicone) | Confirm material specifications match design requirements |
| Packing list | Component count, weights, dimensions | Count delivered components against packing list |
| Environmental conditions | Temperature 10-35°C, humidity 30-70% RH | Record ambient conditions at delivery time |
Photograph the equipment in its shipping container before any unloading, documenting the condition of the packaging, any visible damage to the container, and the equipment's position within the container. Unload the equipment carefully and photograph the equipment itself from all four sides, documenting any dents, scratches, or damage to the stainless steel surfaces. Cross-check the equipment's serial number against the delivery note and FAT certificate; if serial numbers do not match, do not accept the equipment and contact the supplier immediately. Verify that the FAT certificate shows pressure testing at 6 bar supply pressure with pressure decay results documented; the FAT certificate must show that pressure decay did not exceed 0.1 bar over a 15-minute hold period at 6 bar supply pressure per ASTM E779 [ASTM E779:2021].
Acceptance is confirmed when the facilities manager signs a delivery acceptance form that documents: (1) equipment serial number matches delivery note and FAT certificate, (2) no visible shipping damage observed, (3) all components listed on the packing list are present and accounted for, (4) environmental conditions at delivery were within specification (10-35°C, 30-70% RH), and (5) photographic evidence of shipping condition is attached. If any damage is observed, document the damage in detail with photographs and note "Received with damage — damage claim filed" on the delivery acceptance form; file the damage claim with the carrier within 7 days. If serial numbers do not match or FAT certificate is missing, reject the equipment and do not proceed with installation. Facilities that accept equipment without verifying FAT certificates and serial numbers lose the ability to claim manufacturing defects if pressure decay testing later reveals seal integrity problems.
This section covers frame installation, gasket assembly, and the critical pressure decay test that validates seal integrity before electrical control system integration.
The installation site must have a compressed air source capable of delivering 0.6 MPa (6 bar) supply pressure with oil-free air quality per ISO 8573-1:2010 [ISO 8573-1:2010] Class 2 (maximum 1 mg/m³ oil content, maximum 3 micrometers particle size). The equipment includes an internal pressure regulator that reduces the 0.6 MPa supply pressure to 0.2-0.3 MPa for the inflatable gasket; verify that the regulator is factory-set to 0.25 MPa by checking the regulator adjustment screw position against the manufacturer's calibration mark. Electrical power must be 220V 50Hz single-phase with a dedicated 0.5 kW circuit breaker; verify voltage and frequency at the installation location using a calibrated multimeter before connecting the control system. The door frame must be mounted to the structural opening using M12 expansion anchors torqued to 80 Nm in a cross-pattern (diagonal sequence) to ensure even load distribution and prevent frame distortion.
| Installation Requirement | Specification | Verification Method |
|---|---|---|
| Compressed air supply pressure | 0.6 MPa (6 bar) | Pressure gauge reading at supply inlet |
| Air quality standard | ISO 8573-1 Class 2 (≤1 mg/m³ oil) | Oil content test or supplier certification |
| Regulator outlet pressure | 0.2-0.3 MPa (factory-set to 0.25 MPa) | Pressure gauge reading at regulator outlet |
| Electrical supply | 220V 50Hz, 0.5 kW dedicated circuit | Multimeter voltage and frequency measurement |
| Frame anchor torque | 80 Nm per M12 anchor, cross-pattern | Calibrated click-type torque wrench (±5% accuracy) |
Mount the SUS304 frame (80-150 mm width, 50-300 mm thickness) to the structural opening using M12 expansion anchors installed at 400 mm spacing around the frame perimeter; install anchors in a cross-pattern (diagonal sequence) and torque each anchor to 80 Nm using a calibrated click-type torque wrench with ±5% accuracy. Verify frame verticality using a digital spirit level; maximum deviation is ±1 mm/m, with total frame deviation not exceeding ±3 mm across the full frame height. Install the 19 mm × 12 mm Dow Corning silicone rubber gasket into the frame groove, ensuring the gasket is fully seated and has no gaps or twisted sections. Connect the compressed air supply line to the frame inlet port and verify that the internal pressure regulator is set to 0.25 MPa by reading the outlet pressure gauge; if the outlet pressure is outside 0.2-0.3 MPa, adjust the regulator screw until the outlet pressure reads 0.25 MPa. Inflate the gasket by opening the air supply valve and verify that gasket inflation time is less than 5 seconds; if inflation takes longer than 5 seconds, check for air leaks in the supply line or regulator.
Acceptance is confirmed by executing a pressure decay test per ASTM E779:2021 [ASTM E779:2021] at 6 bar supply pressure: (1) inflate the gasket to 0.25 MPa outlet pressure and allow 2 minutes for stabilization, (2) close the air supply valve and record the initial pressure reading, (3) hold the system closed for 15 minutes and record the final pressure reading, (4) calculate pressure decay as (initial pressure − final pressure) / 15 minutes, (5) acceptance criterion is pressure decay ≤0.1 bar over 15 minutes. If pressure decay exceeds 0.1 bar, do not proceed with electrical installation; instead, inspect the gasket for visible damage, check all air line connections for leaks using soapy water, and verify that the regulator outlet pressure is stable at 0.25 MPa. If pressure decay remains above 0.1 bar after leak inspection, contact the equipment supplier to replace the gasket or frame assembly. Facilities that skip the pressure decay test before electrical installation and discover seal integrity problems during operational commissioning face extended downtime and potential regulatory non-compliance.
This section covers electrical connections, control system testing, and verification that all operational modes (green light, red light, emergency stop) function correctly before system handover.
The 220V 50Hz electrical supply must be isolated from the main facility power distribution by a dedicated circuit breaker with a minimum 0.5 kW capacity; verify that the circuit breaker is labeled "Single-Inflatable-Airtight-Door Control System" and is physically isolated from other equipment circuits. The control system documentation package must include the electrical schematic diagram, PLC program listing, HMI software configuration file, and Modbus RTU communication parameters (if BMS integration is required). Verify that the control system software version matches the equipment serial number by checking the software version number in the HMI interface against the software version list provided in the handover documentation; if versions do not match, do not proceed with commissioning and contact the equipment supplier to provide the correct software version.
| Electrical Requirement | Specification | Verification Method |
|---|---|---|
| Power supply voltage | 220V ±10% (198-242V acceptable) | Multimeter measurement at control box input terminals |
| Power supply frequency | 50Hz ±2% (49-51 Hz acceptable) | Multimeter frequency measurement or power analyzer |
| Circuit breaker capacity | Minimum 0.5 kW, dedicated circuit | Circuit breaker label and amperage rating verification |
| Control system software version | Matches equipment serial number | HMI interface software version display vs. handover documentation |
| Modbus RTU parameters (if BMS integration) | Address, baud rate, parity per documentation | Configuration file review and parameter entry verification |
Connect the 220V 50Hz power supply to the control box input terminals and verify voltage at the input terminals using a calibrated multimeter; acceptable range is 198-242V (±10% of 220V). Power on the control system and verify that the green indicator light illuminates within 2 seconds; the green light indicates the system is powered and ready for operation. Press the door open button and verify that: (1) the red indicator light illuminates, (2) the electromagnetic lock de-energizes (audible click), (3) the gasket deflates within 5 seconds (audible hiss), and (4) the door can be manually opened without resistance. Close the door and verify that: (1) the electromagnetic lock re-energizes (audible click), (2) the gasket inflates within 5 seconds, (3) the red light extinguishes and the green light illuminates, and (4) the door is mechanically locked. Press the emergency stop button and verify that: (1) all power to the control system is cut, (2) the gasket deflates (manual deflation may be required by rotating the manual deflation valve 180 degrees), and (3) the door can be manually opened. Test the access control method (keypad, button, or infrared sensor) and verify that the door opens only when the correct access code is entered or the authorized sensor is triggered.
Acceptance is confirmed when all operational modes function correctly in sequence: (1) green light illuminates on power-up, (2) red light illuminates and gasket deflates within 5 seconds when door open button is pressed, (3) green light illuminates and gasket inflates within 5 seconds when door is closed, (4) emergency stop button cuts all power and allows manual gasket deflation, and (5) access control method (keypad, button, or infrared) correctly controls door opening. Document the operational mode test results on a commissioning test form signed by the facilities manager and the equipment supplier's commissioning technician. If any operational mode fails (e.g., gasket does not deflate within 5 seconds, electromagnetic lock does not engage), do not proceed with system handover; instead, troubleshoot the control system by checking the PLC program logic, verifying Modbus RTU communication parameters (if BMS integration is active), and testing the electromagnetic lock coil resistance using an ohmmeter. Facilities that accept the system without verifying all operational modes risk discovering control system failures during the first emergency evacuation scenario.
This section establishes the final handover documentation checklist, defect classification protocol, and acceptance certificate execution before the system transitions to facilities management.
The equipment supplier must provide a complete handover documentation package that includes: (1) operation and maintenance (O&M) manual (one printed copy plus electronic PDF), (2) as-built drawings (electrical schematic, mechanical assembly drawing, P&ID for air system), (3) factory acceptance test (FAT) report with pressure decay results, (4) site integration test (SIT) report documenting all operational mode tests, (5) spare parts list with recommended stock levels, (6) software and firmware version list with backup files (USB or CD), (7) warranty registration card with equipment serial number and warranty start date. Cross-check the equipment serial number on every certificate and document against the actual equipment serial number installed on site; if any certificate shows a different serial number, do not sign the acceptance certificate and contact the equipment supplier to provide corrected documentation. Verify that all calibration dates on test equipment certificates (pressure gauges, multimeters, torque wrenches) are current and that the certification body is accredited (CNAS, ANAB, or equivalent).
| Handover Document | Required Content | Verification Action |
|---|---|---|
| O&M manual | Printed + electronic copy, equipment serial number | Verify serial number matches installed equipment |
| As-built drawings | Electrical, mechanical, P&ID with revision date | Check revision date is current and matches SIT report date |
| FAT report | Pressure decay test results, serial number, test date | Verify pressure decay ≤0.1 bar per 15 minutes at 6 bar |
| SIT report | Operational mode test results, date, technician signature | Verify all operational modes tested and passed |
| Spare parts list | Component names, part numbers, recommended stock levels | Cross-check part numbers against equipment BOM |
| Software backup | HMI software, PLC program, BMS configuration files | Verify file dates match software version list |
| Warranty card | Serial number, warranty period, start date | Confirm warranty start date is installation completion date |
Execute a full system walk-through with the equipment supplier's commissioning technician and document all observations (normal operation, improvement opportunity, or defect) on a pre-acceptance inspection form. Classify each defect using the following criteria: (1) critical defect = safety hazard or regulatory non-compliance (e.g., pressure decay exceeds 0.1 bar, emergency stop button does not function, gasket does not inflate within 5 seconds), (2) major defect = performance below specification but not a safety hazard (e.g., door opening time exceeds 10 seconds, indicator light is dim but visible), (3) minor defect = cosmetic or convenience issue (e.g., small scratch on stainless steel surface, control box label is slightly misaligned). For each critical defect, require the equipment supplier to provide a corrective action plan and timeline for resolution before the acceptance certificate is signed. For each major defect, document the defect and agree on a rectification period (typically 30-60 days post-acceptance) during which the supplier will resolve the defect. For each minor defect, record the defect but allow it to be addressed in planned maintenance after system handover.
Acceptance is confirmed by executing a facility acceptance certificate that states: (1) all critical defects have been resolved before acceptance, (2) all major defects are documented and will be resolved within the agreed rectification period (typically 30-60 days), (3) all handover documents have been received and verified against equipment serial numbers, (4) all operational modes have been tested and function correctly, and (5) the warranty period begins on the date of acceptance certificate signature. The acceptance certificate must be signed by both the facilities manager and the equipment supplier's representative; the signature date becomes the warranty start date. Retain the right to withhold final payment (typically 10-15% of contract value) until all major defects are resolved within the agreed rectification period. If critical defects are discovered after the acceptance certificate is signed, the facilities manager has the right to reject the system and require the equipment supplier to provide replacement equipment or a full refund. Facilities that sign the acceptance certificate before critical defects are resolved lose the contractual right to demand corrective action, even if the supplier verbally agrees to address the defects post-acceptance.
Q1: What is the immediate post-delivery inspection checklist, and what damage claim deadline applies?
Photograph the equipment in its shipping container and from all four sides before any handling; cross-check the equipment serial number against the delivery note and FAT certificate within 4 hours of delivery. File any damage claims with the carrier within 7 days of delivery; photographic evidence of shipping condition is required to support the claim.
Q2: What are the minimum civil works and site preparation prerequisites before installation begins?
Verify structural load capacity of at least 500 kg/m² at the door frame mounting location, measure actual ceiling height at the receiving bay (must be equipment height + 300 mm minimum for rigging clearance), and confirm corridor width is at least 600 mm wider than the equipment's largest dimension along the entire delivery route.
Q3: What is the standard differential pressure setting for the inflatable gasket, and how is it verified?
The internal pressure regulator is factory-set to 0.25 MPa (2.5 bar) outlet pressure, which is within the specification range of 0.2-0.3 MPa; verify the outlet pressure using a calibrated pressure gauge at the regulator outlet port.
Q4: How can airtightness be verified in the field without specialized equipment?
Execute a pressure decay test per ASTM E779:2021 using only a pressure gauge and a stopwatch: inflate to 0.25 MPa, close the air supply valve, record initial pressure, wait 15 minutes, record final pressure, and verify that pressure decay does not exceed 0.1 bar over the 15-minute period.
Q5: What are the Modbus RTU communication parameters for BMS integration, and how are they configured?
Modbus RTU parameters (slave address, baud rate, parity, stop bits) are documented in the control system configuration file provided in the handover package; verify parameters match the BMS system requirements before connecting the equipment to the building management system.
Q6: What spare parts should be stocked, and what is the typical mean time to repair (MTTR) for critical sealing components?
The spare parts list provided in the handover documentation specifies recommended stock levels for gaskets, electromagnetic lock coils, and pressure regulators; typical MTTR for gasket replacement is 2-4 hours, and gaskets should be replaced every 12-24 months depending on usage frequency and environmental conditions.
ISO 8573-1:2010. Compressed air — Part 1: Contaminants and purity classes. International Organization for Standardization.
ASTM E779:2021. Standard test method for determining air leakage rate by fan pressurization. ASTM International.
GB 50346-2011. Code for design of biosafety laboratory. China Ministry of Housing and Urban-Rural Development.
GB 19489-2008. Biosafety in microbiological and biomedical laboratories. China National Standardization Management Committee.
ISO 14644-1:2024. Cleanrooms and associated controlled environments — Part 1: Classification of air cleanliness by particle concentration. International Organization for Standardization.
WHO Laboratory Biosafety Manual (3rd Edition). World Health Organization.
SMACNA HVAC Duct Construction Standards — Metal and Flexible. Sheet Metal and Air Conditioning Contractors' National Association.
The installation procedures and commissioning criteria presented in this article reflect general industry engineering practices and publicly accessible regulatory documentation. Installation and commissioning activities for biosafety-critical equipment must be executed only by qualified technicians, verified against on-site conditions, and documented in accordance with manufacturer-provided validation protocols (IQ/OQ/PQ) before operational handover. Facilities managers are responsible for ensuring that all installation work complies with local building codes, electrical codes, and biosafety regulations applicable to their jurisdiction.