Chapter 5: Troubleshooting
Switches/Thermostat
Service Manual
5-13
5.3.1 Humidifier Heater/Safety Thermostat
The humidifier has two separate heater elements rated at 225 watts at 104 volts. They are connected in
parallel for 115 volt operation and in series for 230 volt operation. The humidifier safety thermostat is in
series with the heater. It opens at 130 +/-5 C and closes at 90 +/-8 C. Measure the resistance at J53.1 to
J53.3.
The resistance of each heater is about 144 ohms so it should measure about 72 ohms for 115 devices, 288
ohms for 230 devices.
5.3.2 Compartment Air Probe and Skin Temperature Probes
Use the Service screen to read the temperature of the compartment and skin temperature probes.
There are two thermistors in each air probe or skin temperature probe. During stable temperature
conditions the thermistors should read the same resistance within a few ohms.
See “Compartment and Skin Probe Characteristics” on page A-1 for complete temperature/resistance
tables.
5.3.3 Heat Sink Sensor Thermistor
Use the Service screen to read the resistance of the heat sink sensor.
Skin temperature probe #1
Control bd J4 pins 1-3, 2-3
Skin temperature probe #2
Control bd J2 pins 1-3, 2-3
Compartment Air probe
Control bd J1 pins 1-2, 3-4
Temperature (°C)
Resistance (Ohms)
20
12527
25
10000
30
8037
35
6500
Thermistor
Control bd J3 pins 1-2
Temperature (°C)
Resistance (Ohms)
20
25000
25
20000
30
16102
35
13048
40
10636
80
2506
90
1827
Содержание Giraffe OmniBed Carestation CS1
Страница 4: ...RH 2 Service Manual ...
Страница 24: ...Service Language Disclaimer viii Service Manual ...
Страница 40: ...Safety and Regulatory Information User Responsibility xxiv Service Manual ...
Страница 44: ...Chapter 1 Functional Description Control Board 1 2 Service Manual FIGURE 1 1 Block Diagram ...
Страница 74: ...Chapter 3 Calibration and Maintenance Line Voltage Calibration 3 12 Service Manual ...
Страница 82: ...Chapter 4 Understanding the Service Interface Upgrade 4 8 Service Manual ...
Страница 110: ...Chapter 5 Troubleshooting Diagnostic Readings 5 28 Service Manual ...
Страница 211: ...Chapter 7 Repair Procedures Display Harness Connections Service Manual 7 75 ...
Страница 212: ...Chapter 7 Repair Procedures Display Harness Connections 7 76 Service Manual ...
Страница 272: ...Chapter 8 Illustrated Parts Options 8 60 Service Manual FIGURE 8 36 Silo Support Assembly 6600 0853 800 ...
Страница 290: ...Chapter 8 Illustrated Parts Wiring Diagrams 8 78 Service Manual FIGURE 8 45 Wiring Diagram Control Panel ...
Страница 291: ...Chapter 8 Illustrated Parts Wiring Diagrams Service Manual 8 79 FIGURE 8 46 Wiring Diagram Incubator and Warmer Heater ...
Страница 292: ...Chapter 8 Illustrated Parts Wiring Diagrams 8 80 Service Manual FIGURE 8 47 Wiring Diagram Servo Humidifier ...
Страница 293: ...Chapter 8 Illustrated Parts Wiring Diagrams Service Manual 8 81 FIGURE 8 48 Wiring Diagram Servo Control Oxygen ...
Страница 294: ...Chapter 8 Illustrated Parts Wiring Diagrams 8 82 Service Manual ...
Страница 296: ...Appendix A Compartment and Skin Probe Characteristics A 2 Service Manual ...
Страница 304: ...Appendix C RS 232 Serial Data Nurse Call C 4 Service Manual ...