16257 1 Mercury SCREW

Table 1
Alarms and Shutoffs for C280 Engines (Distillate Fuel)    
Condition    Parameter    Application    Setpoint for Alarm    Setpoint for Shutoff    
Cooling System    
High     SCAC water pump outlet temperature     Temperature regulator
38° C (100° F)    
45° C (113° F)    
61° C (142° F)    
Low     Aftercooler and oil cooler
water pump pressure (outlet)     -    
70 kPa (10 psi) (1)     -    
Low     Auxiliary water pump pressure (outlet)     -    
70 kPa (10 psi) (1)     -    
Low     Coolant level     -     Level     -    
Low     Jacket water pump
pressure (outlet)     -    
70 kPa (10 psi) (1)     -    
High     Jacket water coolant temperature (outlet)     -    
103 °C (217 °F)    
109 °C (228 °F)    
Minimum differential     Jacket water coolant temperature (inlet) and engine oil temperature (inlet)     -    
2 °C (4 °F) (2)     -    
Exhaust    
High     Exhaust port temperature deviation     -    
50 °C (90 °F) difference from the average temperature of all of the cylinders     -    
High     Turbocharger exhaust inlet (before turbine)     -    
630 °C (1166 °F)     -    
High     Turbocharger exhaust inlet (before turbine)     High Output rating    
650 °C (1202 °F)     -    
High     Exhaust port temperature     -     (3)     -    
Fuel    
High     Fuel filter differential pressure     -    
75 kPa (11 psi)     -    
Low     Fuel pump pressure (outlet)     The engine speed is less than 650 rpm.    
140 kPa (20 psi) (4)     -    
Low     Fuel pump pressure (outlet)     The engine speed is greater than 650 rpm.    
260 kPa (38 psi) (4)        
High     Fuel temperature (inlet)     -    
66 °C (151 °F)    
72 °C (162 °F)    
Inlet Air    
High     Air filter differential pressure (restriction)     -    
3.7 kPa (.54 psi)     -    
High     Inlet manifold air pressure (boost pressure)     -     (5)     -    
High     Inlet manifold air temperature    
50 °C (122 °F) aftercooler and oil cooler
water temperature regulator    
92 °C (198 °F)    
98 °C (208 °F)    
High     Inlet manifold air temperature    
50 °C (122 °F) aftercooler and oil cooler
water temperature regulator
(with a High Performance Aftercooler)    
78 °C (172 °F)    
98 °C (208 °F)    
High     Inlet manifold air temperature    
32 °C (90 °F) aftercooler and oil cooler
water temperature regulator    
75 °C (167 °F)    
98 °C (208 °F)    
High     Inlet manifold air temperature    
32 °C (90 °F) aftercooler and oil cooler
water temperature regulator
(with a High Performance Aftercooler)    
61 °C (142 °F)    
98 °C (208 °F)    
Lubrication    
High     Crankcase pressure     -    
0.6 kPa (.09 psi)    
1 kPa (.15 psi)    
High     Engine oil temperature     -    
92 °C (198 °F)    
98 °C (208 °F)    
Low     Engine oil level