Tiger-Vac CD-36L EX DT (MRP) ULPA WITH SS CART 1/2GD

II 1/2GD means the unit is category 1 internally and category 2 externally -- for both gas (G) and dust (D). In practice: the inside of the vacuum (filter chamber, suction hose, tank) may be exposed to Zone 0 for gas or Zone 20 for dust, where explosive atmospheres are continuously or long-term present. The surrounding environment may be Zone 1 for gas or Zone 21 for dust, where explosive atmospheres occur occasionally under normal operation. This makes the model suitable for piped recovery from process equipment that itself maintains Zone 0/20 internally (reactors, tablet presses with active ventilation). II 2D is the reduced certification without internal Zone 20 and without gas coverage -- suited for pure Zone 21 dust environments where the process itself does not generate an explosive atmosphere inside the vacuum.

Because the continuous-duty requirements in the 1/2GD zones are stricter than in Zone 21 dust alone. The higher 2.2 kW rating provides substantial reserve at high vacuum over long periods without overheating, important when the machine is expected to run continuously on process extraction. On the 2D variant, where the duty profile is often more intermittent (cleaning tasks and batch operation), 1.5 kW is sufficient. Performance in m3/h and mmH2O is the same on both -- it is the motor margin that differentiates them.

MRP is manual, not automatic. The operator shuts down suction, activates the cleaning lever on the side of the filter housing (typically 3-5 strokes back and forth), which reverses airflow through the reverse-purge cartridge and shakes dust down into the detachable tank. The procedure takes under a minute and is usually performed after each shift or when vacuum drops. Because it is manual, there is no automatic timer and no electronic valves to certify -- this keeps ATEX safety simple and maintenance low. Note that the downstream ULPA U15 final filter is not cleaned by MRP -- it must be replaced when restricted (typically annually under normal duty).

The CD-230V EX MRPFT HEPA is stationary, 50 L tank and HEPA H14 final filter (not ULPA). It is optimised for permanent installation on process equipment and has Manual Reverse Purge with Filter Tubes (MRPFT, a bag-less variant of cleaning with filter tubes). The CD-36L EX DT MRP ULPA 1/2GD, in contrast, is mobile on an SS304 cart with conductive wheels and has a detachable tank (DT) -- ideal where the operator must move the machine between process equipment or perform mobile cleaning tasks in 1/2GD zones. ULPA filtration is one step up from HEPA and is required in ISO Class 4 cleanrooms. Choose CD-230V if the task is permanent stationary with large volume; choose CD-36L MRP ULPA 1/2GD if mobility and cleanroom compatibility are important.

The CD-36L EX DT MRP ULPA 1/2GD is dual certified: ATEX (LCIE 03 ATEX 6295 X) which is the legal requirement in the EU/EEA, and IECEx (LCI 10.0040X) which is the international counterpart. In the EU, ATEX is the primary, and the IECEx certificate is useful if the machine is exported to IECEx countries (UK post-Brexit, Australia, parts of Asia and the Middle East). It is not a dual approval that gives "extra" safety -- both certificates rest on the same technical documentation and the same construction.

No. The CD-36L EX DT (MRP) ULPA WITH SS CART 1/2GD is dry-only -- EN 17348 DT. For wet/dry in the same II 1/2GD class choose the Delfin 802 WD AIREX 1/2D-2/2G, which is also II 1/2GD and covers both dust and gas in combined wet/dry operation. For dust only (without simultaneous gas), the Delfin 202 DS 3 AIREX is a slimmer choice.