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Ibr Fire
Set Auto Start Test Apparatus Pressure Switches as per ASIB Rules
- The jockey or make-up pump shall be set to start automatically when the pressure in the system has fallen to a value of not less than 90% of the churn pressure of the primary pump and to shut off automatically when the system pressure has reached either the churn pressure of the primary pump or 1,200 kPa, whichever is the lesser.
- The automatic starting device for pumps shall be of an approved pattern and set to operate the primary pump when the pressure in the trunk main has fallen to a value not less than 80% of the pressure in the trunk main when the pump is churning or 100 kPa below the duty pressure of Pmax if this is above or equal to 80% of the churn pressure.
- The second pump of a duplicate pump system shall be set to start when the trunk main falls to a value of 100 kPa below the cut in pressure of the primary pump but not less than 60% of the churn pressure of the primary unit.
- The second pump of a three-half capacity pump system shall be hardwired to start automatically within 30 seconds of the primary pump coming into operation.
Once started, the pump must run continuously until stopped manually.
CATALOGUE NAME : Projects (Supply and Install) - Technical Consultants Only
CATEGORY : Commercial Construction / Demolition Industrial Mining / Quarry / Civil Works Production Services
Set Auto Start Test Apparatus Pressure Switches as per ASIB Rules
- The jockey or make-up pump shall be set to start automatically when the pressure in the system has fallen to a value of not less than 90% of the churn pressure of the primary pump and to shut off automatically when the system pressure has reached either the churn pressure of the primary pump or 1,200 kPa, whichever is the lesser.
- The automatic starting device for pumps shall be of an approved pattern and set to operate the primary pump when the pressure in the trunk main has fallen to a value not less than 80% of the pressure in the trunk main when the pump is churning or 100 kPa below the duty pressure of Pmax if this is above or equal to 80% of the churn pressure.
- The second pump of a duplicate pump system shall be set to start when the trunk main falls to a value of 100 kPa below the cut in pressure of the primary pump but not less than 60% of the churn pressure of the primary unit.
- The second pump of a three-half capacity pump system shall be hardwired to start automatically within 30 seconds of the primary pump coming into operation.
Once started, the pump must run continuously until stopped manually.
Set Auto Start Test Apparatus Pressure Switches as per ASIB Rules
- The jockey or make-up pump shall be set to start automatically when the pressure in the system has fallen to a value of not less than 90% of the churn pressure of the primary pump and to shut off automatically when the system pressure has reached either the churn pressure of the primary pump or 1,200 kPa, whichever is the lesser.
- The automatic starting device for pumps shall be of an approved pattern and set to operate the primary pump when the pressure in the trunk main has fallen to a value not less than 80% of the pressure in the trunk main when the pump is churning or 100 kPa below the duty pressure of Pmax if this is above or equal to 80% of the churn pressure.
- The second pump of a duplicate pump system shall be set to start when the trunk main falls to a value of 100 kPa below the cut in pressure of the primary pump but not less than 60% of the churn pressure of the primary unit.
- The second pump of a three-half capacity pump system shall be hardwired to start automatically within 30 seconds of the primary pump coming into operation.
Once started, the pump must run continuously until stopped manually.
