University Estates and Facilities 24.2 | Page 76

Our Facilities Medical Gas Manifolds

Automatic Changeover Manifold
MA4 Automatic Change Over Manifold- 650 l / min \ Digital- 2x4 Pin Index , c / w Digital Touchscreen
This manifold is classified by HTM 02-01 as a primary supply . According to this Health Technical Memorandum , manifold type , capacity and location of all primary , secondary and reserve sources of supply must all be carefully considered and risk assessed during the planning stage , taking into account specific design parameters and need for supply security .
Emergency Reserved Manifold ( ERM )
Emergency Reserved Manifold MA4 to HTM 02-01 - 2x2 Pin Index .
This manifold is classified by HTM 02-01 as a secondary supply . This must come online automatically via a non-return valve . The number of cylinders must provide a minimum of 4 hours supply , based on the facility ' s design flowrates . A compressor plant , or synthetic air supply , should always be specified where capacity is in excess of a 2 x 10 manifold capacity .
Back-feed Kit
Backfeed protection device
The back-feed kit is used to supply the medical gases to a ward or department in the event of a main supply interruption and is connected via the NIST or through a terminal unit . This is to be undertaken with the implementation of a permit to work and under the control of the Authorised Person . The back-feed kits are gas specific and are manufactured to be connected to all types of gases .
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