Cryomech Cryocooler PT410 - Page 55

Operation
7
-
10
Warning Description Explanation
“Helium Temp Running High!”
Helium discharge temperature approaching high error set point;
check cooling water temperatures, may also be caused by low
oil level check compressor module sight glasses or low oil
temperature caused by cool water
“Oil Temp Running High!”
Oil temperature approaching high error set point; verify cooling
water flow and temperatures
“Oil Temp Running Low!"
Oil temperature approaching low error set point; verify cooling
water flow and temperatures (reduce flow rate or increase
temperature)
7.7.7 Error and warning set points
The trip and clear set points for all the errors and warnings are listed in the following table.
Error Message
Lock Out
Contributor?
Trip Clear
"High pressure too High!" YES 400 psig (27.6bar) 375 psig (25.9 bar)
"High pressure too Low!" YES 150 psig (10.3bar) 170 psig (11.7 bar)
“Low Pressure Too Low!” YES 40 psig (2.8 bar) 50 psig (3.4 bar)
“Low Pressure Too High!" YES 250 psig (17.2 bar) 240 psig (16.5 bar)
"Delta Pressure Too High!" YES 300 psig (20.7bar) 290 psig (20bar)
"Delta Pressure Too Low!" YES 50 psig (3.4 bar) 75 psig (5.2 bar)
"Static Pressure Too High!" YES 300 psig (20.7 bar) 280 psig (19.3 bar)
"Static Pressure Too Low!" YES 100 psig (6.9 bar) 170 psig (11.7 bar)
"Water In Temp Too High" YES 110 °F (43 °C) 80 °F (27 °C)
"Water In Temp Too Low" YES 40 °F (4 °C) 50 °F (10 °C)
“Water Out Temp Too High!” YES 125 °F (52 °C) 110 °F (43 °C)
"Water Out Temp Too Low" YES 40 °F (4 °C) 50 °F (10 °C)
“Helium Temp Too High!” YES 190 °F (88 °C) 120 °F (49 °C)
“Helium Temp Too Low!" YES 40 °F (4 °C) 50 °F (10 °C)
“Oil Temp Too High!” YES 125 °F (52 °C) 110 °F (43 °C)
“Oil Temp Too Low!" YES 40 °F (4 °C) 50 °F (10 °C)
“Compressor Motor Current Too
Low!”
YES < 5A ≥ 5 A