1. Bubuka
This manual provides detailed instructions for the installation, operation, and maintenance of your Montech AIR 903 MAX E-ATX Mid Tower Case. Please read this manual thoroughly before beginning assembly to ensure proper setup and safe usage. Retain this manual for future reference.

Figure 1.1: Montech AIR 903 MAX Mid Tower Case (Black)
2. Émbaran Kasalametan
- Salawasna pegatkeun sambungan catu daya ti stop kontak témbok saméméh masang atawa nyoplokkeun komponén nanaon.
- Handle components with care to avoid damage from electrostatic discharge (ESD). Consider using an anti-static wrist strap.
- Tetep bagian leutik tur screws jauh ti barudak.
- Ulah neundeun wadahna dina sinar panonpoé langsung atanapi caket sumber panas.
- Mastikeun ventilasi ditangtoskeun sabudeureun kasus pikeun nyegah overheating.
- Ulah nyobian ngarobih casing atanapi komponénna, sabab ieu tiasa ngabatalkeun garansi anjeun sareng nimbulkeun résiko kaamanan.
3. Eusi Paket
Pastikeun yén sadaya item aya dina bungkusan:
- Montech AIR 903 MAX E-ATX Mid Tower Case
- 3 x 140mm ARGB PWM Fans (pre-installed in front)
- 1 x 140mm PWM Fan (pre-installed in rear)
- Kotak aksésori (ngandung sekrup, dasi seleting, sareng bagian leutik sanésna)
- Manual pangguna (dokumén ieu)
4. Produk Langkungview
The Montech AIR 903 MAX is an E-ATX mid-tower case designed for high airflow and extensive component compatibility. It features a mesh front panel for optimal ventilation and a tempered glass side panel to showcase your build.
Fitur konci:
- Desain Aliran Udara Tinggi: Metal front panel with 51% ventilation rate for superior thermal performance.
- Filtrasi Lebu: Meticulously designed mesh front panel acts as a dust filter and is easily removable for cleaning.
- Kipas anu tos dipasang: Includes three 140mm ARGB PWM fans and one 140mm PWM fan for effective cooling and customizable lighting.
- Rojongan cooling éksténsif: Supports up to 360mm AIO liquid coolers at both the front and top.
- Komponén Clearance: Accommodates CPU tower coolers up to 180mm in height and graphics cards up to 400mm in length and 190mm in width.
- Konéktipitas Modern: Features a front panel Type-C port.

Gambar 4.1: Hareupeun View with Mesh Panel and ARGB Fans

Gambar 4.2: Panel Samping Kaca Tempered View
5. Setup jeung Instalasi
Before starting, ensure you have a clean, well-lit workspace and the necessary tools (e.g., screwdrivers, zip ties).
5.1 Ngaleupaskeun Panel Samping
- Locate the captive thumb screws on the rear of the case for both the tempered glass side panel and the solid steel side panel.
- Buka screws jempol.
- Carefully slide the panels backward and lift them off. Place the tempered glass panel on a soft, flat surface to prevent scratches or damage.
5.2 Pamasangan motherboard
The AIR 903 MAX supports E-ATX, ATX, Micro ATX, and Mini ITX motherboards.
- Pasang tameng I/O kana bukaan pungkur wadahna.
- Align your motherboard with the pre-installed standoffs. Ensure the standoffs match your motherboard's form factor.
- Secure the motherboard with the appropriate screws provided in the accessory box.

Figure 5.1: Motherboard Compatibility Diagram
5.3 Pamasangan Kartu Grafika (GPU).
Casing ieu ngadukung kartu grafis dugi ka 400mm panjangna sareng 190mm lébarna.
- Remove the necessary expansion slot covers from the rear of the case. These are secured with thumb screws.
- Selapkeun kartu grafis anjeun kana slot PCIe anu cocog dina motherboard anjeun.
- Secure the graphics card to the case using the thumb screws.
- Connect any required PCIe power cables from your power supply to the graphics card.
5.4 Pamasangan Girang Panyimpenan (HDD/SSD)
The case includes an HDD cage in the power supply shroud area, which can be removed using thumb screws for easier access or more space.
- Locate the drive bays or mounting points for 2.5" SSDs and 3.5" HDDs.
- Pasang drive anjeun nganggo sekrup anu disayogikeun.
- Connect SATA data and power cables to your drives.
5.5 Pamasangan Power Supply Unit (PSU).
The PSU mounts at the rear bottom of the case.
- Slide your PSU into the designated compartment from the rear of the case.
- Align the PSU with the screw holes and secure it with the provided screws.
- Connect the main ATX power cable, CPU power cable, and any other necessary power cables to your motherboard and components.
5.6 Fan and Cooling System Installation
The case supports 360mm AIO coolers at the front and top, and CPU tower coolers up to 180mm in height.
- AIO Liquid Coolers: Mount radiators and fans to the front or top fan mounts as per your AIO cooler's instructions.
- Kipas Tambahan: If installing additional fans, ensure correct airflow direction (intake/exhaust).
- CPU Air Coolers: Install your CPU air cooler onto the motherboard before or after motherboard installation, depending on the cooler design.

Figure 5.2: Component Clearance Diagram
5.7 Manajemén kabel
Utilize the cable routing cutouts and velcro straps behind the motherboard tray to organize cables. This improves airflow and aesthetics.
- Route cables through the designated grommets and tie-down points.
- Use the included zip ties and pre-installed velcro straps to secure cables neatly.
- Ensure the SATA cable for the fan hub is connected to your PSU.
6. Operasi
6.1 Powering On
After all components are installed and cables are connected, replace the side panels. Connect your monitor, keyboard, mouse, and power cable to the PSU. Flip the PSU switch to the ON position and press the power button on the top I/O panel of the case.
6.2 ARGB Fan Control
The pre-installed ARGB fans can be controlled via the integrated LED/PWM controller or synchronized with your motherboard's ARGB software (if supported). Refer to your motherboard manual for ARGB header connection and software instructions.
- If using the case's controller, cycle through lighting effects using the dedicated button on the top I/O panel.
- If connecting to a motherboard, ensure the ARGB cable from the fan hub is connected to a compatible 3-pin 5V ARGB header on your motherboard.
7. Pangropéa
7.1 Ngabersihkeun Saringan Lebu
The mesh front panel and magnetic top dust filter are designed to prevent dust accumulation. Regular cleaning is recommended to maintain optimal airflow.
- Panel bolong hareup: The front panel can be easily dismantled. Gently pull the bottom of the front panel to detach it from the case. Clean the mesh with a soft brush or compressed air.
- Top Magnetic Filter: Simply lift the magnetic filter from the top of the case and clean it with water or compressed air. Ensure it is completely dry before reattaching.
- Bottom PSU Filter: Slide out the filter located under the power supply shroud and clean it.

Figure 7.1: Removable Front Mesh Panel for Cleaning
7.2 beberesih umum
- Ngagunakeun lemes, damp cloth to wipe down exterior surfaces. Avoid abrasive cleaners.
- For interior cleaning, use compressed air to remove dust from components and internal surfaces.
8. Cara ngungkulan
8.1 Sistem Teu Bisa Dihurungkeun
- Pastikeun kabel daya disambungkeun pageuh kana PSU sareng stop kontak témbok.
- Verify the PSU switch is in the ON position.
- Check all internal power connections (24-pin ATX, 8-pin CPU, PCIe power, SATA power for fan hub).
- Confirm the front panel power button cable is correctly connected to the motherboard's front panel header.
8.2 Fans Not Spinning or RGB Not Working
- Ensure the fan hub's SATA power cable is connected to your PSU.
- If using motherboard ARGB control, verify the 3-pin 5V ARGB cable from the fan hub is connected to the correct header on your motherboard.
- If using the case's controller, press the RGB button on the top I/O panel to cycle through modes.
- Check fan connections to the fan hub.
8.3 Excessive Fan Noise
- Ensure all fan screws are tightened to prevent vibrations.
- Clean dust from fans and filters (refer to Section 7.1).
- If fans are connected to the motherboard, adjust fan curves in your motherboard's BIOS/UEFI or software to reduce fan speed at lower temperatures.
9. Spésifikasi
| Fitur | Spésifikasi |
|---|---|
| merek | Montech |
| Ngaran modél | AIR 903 MAX BLACK |
| Jenis Kasus | Pertengahan Menara |
| Motherboard kasaluyuan | Extended ATX, Mini ITX, Micro ATX, ATX |
| Bahan | Kaca Tempered, Logam |
| Warna | Hideung |
| Ukuran produk (L x W x H) | 18.82 x 9.05 x 19.41 inci (47.8 x 22.99 x 49.3 cm) |
| Item Beurat | 20.3 pon (9.21 kg) |
| Kipas anu tos dipasang | 3x 140mm ARGB PWM (Front), 1x 140mm PWM (Rear) |
| GPU Clearance | Up to 400mm (Length), 190mm (Width) |
| CPU cooler Jangkungna Clearance | Nepi ka 180mm |
| Rojongan Radiator AIO | Up to 360mm (Front & Top) |
| Port I / O payun | 2x USB 3.0, 2x USB 2.0, 1x USB Type-C, Audio In/Out |
10. Garansi jeung Rojongan
Kanggo inpormasi garansi sareng dukungan téknis, mangga tingal ka Montech resmi websitus atanapi ngahubungan layanan palanggan maranéhanana langsung. Simpen bukti pameseran anjeun pikeun klaim garansi.
Official Montech Websitus: www.montechpc.com





