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3 Connecting and Operating the Equipment
3.1 General Installation Requirements
Before the BAC-4015 is installed, the piping should be purged with clean dry air to remove any loose debris and/or water from the line.
Downstream piping must be of a type approved and specified for breathing air applications.
Inlet connection to the BAC-4015 is made by a G1/2 BSPP internally threaded pipe connection to IS0228 (BSPP) for use with parallel or taper
fittings. The three outlet connections are G1/4 BSPP internally threaded to IS0228 (BSPP) for use with parallel fittings.
The BAC-4015 must be operated in a vertical position and must not be situated where it is able to tilt or be dislodged from its operating position.
The BAC-4015 has a weatherproof cabinet (NOT WATERPROOF) with a rubber edging strip around the door. During operation, the door must
be in the closed and locked position and should only be opened for maintenance/filter element changes or operation of the pressure regulator
by authorised personnel.
The BAC-4015 must only be used in the direction of flow indicated on the cabinet. No attempt should be made to remove the filters from the
cabinet or loosen any of the retaining bolts which could cause malfunction of the purifier.
Ensure that all connections to the equipment are secure and that compressed air of the correct pressure and flow rate is available to the purifier.
If the line pressure exceeds 10 bar g (145 psi g), install a suitable pressure regulator (not supplied). First ensure that the purifiers outlet pressure
regulator is closed. Carefully open inlet valve or regulator. This action ensures that down stream equipment cannot be subjected to excessive
pressure.
Ensure that the BAC-4015 is securely sited and all air supply lines are safely positioned and not susceptible to damage or constriction.
Air can be supplied from most suitably rated compressors, although care should be taken to ensure that the compressor is operating efficiently
and not overheating. Care should also be taken in the location of the compressor intake to ensure that no harmful contaminants are drawn in.
For heavily contaminated compressed air systems a water separator is recommended which will reduce liquid water and oil.
Under normal circumstances, it is not usual to encounter CO concentrations in excessive levels. If detected then the purifier must not be used.
Provision for air sampling should be made to prove the quality of delivered air using a certified testing agency.
All ancillary equipment such as piping, connections, valves, fittings etc. must be suitable for breathing air purposes, and for the pressure and
flow capacities involved.
3.2 Operating the Equipment
This equipment must be fully checked before every use and any faults MUST be rectified immediately.
To open the BAC-4015 outlet pressure regulator (supplied) and adjust the line pressure, lift locking ring to unlock; turning clockwise to increase
secondary pressure, or anticlockwise to decrease pressure. It is recommended that adjustments are made under flow conditions.
Note: there may be a slight increase in set pressure when flow demand stops until the desired conditions are achieved for the
operators breathing equipment
.
Push down locking ring to re-lock. Do not exceed the rated flow - refer to “Technical Specification” on page 3
A limiting orifice is fitted after the outlet pressure regulator to prevent the rated flow from being exceeded.
When the operating condition has been achieved, the breathing air purifier will operate automatically without further adjustments providing that
the inlet supply remains stable within the specified limits.
When air demand is no longer required the inlet valve regulator (not supplied) must be closed and the BAC-4015 isolated from use.
Any disconnection of the purifier must only be made when the system pressure is fully relieved.
Only competent personnel trained, qualified, and approved by Parker domnick hunter should perform installation,
commissioning, service and repair procedures.
