Hirschmann MTM2900-FAN Hirschmann fan-module service and airflow review
Hirschmann MTM2900-FAN is a MAMMUTHUS switch fan module in the MTM2900 fan module range. The complete designation matters for purchasing and receiving. The shared Hirschmann collage is a reference image showing product families, not an exact photograph of this configured unit.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| Complete designation | MTM2900-FAN |
| Family | MTM2900 fan module |
| Product form | MAMMUTHUS switch fan module |
| Module role | MAMMUTHUS replaceable fan module |
| Host | MTS2900 / MTS2948 core-switch platform |
| Order reference | 942999823 in manufacturer installation material |
| Cooling | MTS2948 requires four fan units per manufacturer manual |
| Service check | Confirm airflow direction and fan-alarm recovery |
| Selection rule | Verify the complete printed code and manufacturer record for the installed version |
Specification and ordering checks
When requesting MTM2900-FAN, provide quantity, condition requirements, the complete printed code and any available order number. Match the host generation and the approved service procedure; a spare fan does not resolve a failed power feed. Ask the supplier to state what is included, especially modules, connectors, optics, licenses, mounting parts or power components where applicable.
A quotation for MTM2900-FAN should separately identify the manufacturer's stated specification and any seller-proposed substitution. Check physical fit, electrical supply and connected media before approving that substitution. If the source code has an option placeholder, confirm the actual production revision on the device label.
Where this item fits
For MTM2900-FAN, start with the equipment already installed and the role it performs in the network or cabinet. Check fan alarms, airflow direction and cabinet temperature before and after replacement. The visible type name identifies the enquiry; the actual site wiring, accessories and software determine whether the offer fits.
Do not assume MTM2900-FAN can substitute for another member of the MTM2900 family. Similar model strings can represent different interfaces, environmental options, power inputs or software packages. Preserve the installed label photograph and the manufacturer's record with the purchase request.
Installation and acceptance
Before servicing MTM2900-FAN, record existing wiring, port assignments, operating status and configuration where applicable. Use the manufacturer's installation procedure and the site's authorized maintenance window. Record the pre-change state so the equipment can be restored if the replacement does not pass acceptance.
After MTM2900-FAN is installed, check the relevant power, link, alarm and application behavior against the original baseline. File the serial number, final code, test result and any approved deviation together. Successful power-up alone does not prove functional equivalence.
Similar-looking model references
The following designations resemble MTM2900-FAN and are grouped here for search and enquiry convenience. They are not automatically interchangeable with MTM2900-FAN; confirm each complete code, function and interface before buying.
Interface and system context
When evaluating Hirschmann MTM2900-FAN, identify the connected host or neighboring equipment first. Fan module for MTS2900 core switch. Document cable or module positions, the cabinet layout, and the normal operating state. This turns MTM2900-FAN from a text-only enquiry into a configuration that can be checked against the manufacturer's information.
For MTM2900-FAN, note which components are included in the offered assembly. A switch base, optical module, wireless radio, connector, power unit or fan cannot be evaluated from its family name alone. Compare the actual interfaces and accessories with the site bill of materials before approving an alternative.
Replacement decision
The key replacement question for MTM2900-FAN is whether the installed function will be restored without changing the design intent. Check fan alarms, airflow direction and cabinet temperature before and after replacement. Keep photographs of the full label, any revision marking and the current network or wiring diagram in the service record.
Ask the supplier to confirm the exact MTM2900-FAN designation in writing. Match the host generation and the approved service procedure; a spare fan does not resolve a failed power feed. If a related-looking code is proposed, compare it as a separate variant and record the reason it is acceptable. After receipt, inspect physical condition and test the item in the intended host or network under the approved procedure.
Buyer handover
For MTM2900-FAN, retain the written offer, manufacturer identification and received-item inspection. Clarify availability, warranty or return terms and whether the item is new, refurbished or a tested spare. A complete handover reduces the risk of ordering a similar-looking but unsuitable MTM2900 variant.
