CSM panel reference

Attention

This panel reference article is outdated and incomplete. It's only kept as historic reference and to have everything of the old site here, too. If you're looking for recent informations about the CSM panel, please use the CSM panels article instead.

Main Panel

Name	Panel Locator			Function	Remarks
	Panel	Area	Grid
ALTIMETER	1	A	C-22	Indicates the altitude of the spacecraft in feet.
MASTER ALARM switch-light	1	C	H-17	Illuminates red to alert the crew of a C/W alarm condition, which is indicated by the system status lights. Pressing the switch resets the master alarm. This switch-light is not illuminated when the C/W system is in boost mode to avoid confusion with the ABORT button.
ACCEL G meter	1	D	I-17	Displays the acceleration along the spacecraft X-axis in g.
SPS THRUST switch	1	E	N-16	When switched to DIRECT ON, the SPS engine can be controlled with the Orbiter main thruster control, otherwise it's disabled.	This is probably not the correct functionality.
IMU CAGE switch	1	G	P-15	When switched to CAGE, the IMU is caged with all three gimbal angles to 0°, otherwise the caging is released.
ABORT light	1	I	I-22	When pressed, an abort is requested and the light illuminates yellow.	Should illuminate red to indicate an abort requested by ground control, not pressable.
EVENT TIMER	1	I	I-22	Digital event timer provides crew with means of monitoring and timing events. Event timer will start automatically when lift-off occurs and is not working before that.
LV RATE light	1	I	K-22	-	Should illuminate when LV angular rates exceed predeterminated limits.
S-II SEP light	1	I	K-22	Illuminates yellow to indicate first-stage jettison and extinguishes when second-stage interstage is jettisoned .
LV GUID light	1	I	K-22	-	Should illuminate when LV guidance attitude reference gets lost.
LV ENGINES 1-5 lights	1	I	K-22	Illuminates yellow when the corresponding engine is operating below it's predeterminated level of thrust.	See also Apollo 15 CSM Launch Checklist
LIFT-OFF and NO AUTO ABORT switch-lights	1	I	L-21	LIFT-OFF illuminates white at lift-off and will be extinguished at commencement of first stage staging. NO AUTO ABORT illuminates red when lift-off illuminates and the EDS switch is turned off.	Pressing the button has no function yet.
APEX COVER JETT switch	1	I	L-23	Backup switch to jettison CM apex cover.
LES MOTOR FIRE switch	1	I	M-21	-	No function yet.
DROGUE DEPLOY switch	1	I	M-23	Backup switch to deploy drogue parachutes.
CANARD DEPLOY switch	1	I	N-21	-	No function yet.
CSM/LV SEP switch	1	I	N-21	Press for normal CSM/LV separation after ascent phase of mission.
MAIN DEPLOY switch	1	I	N-23	Backup switch to deploy main parachutes.
CM RCS He DUMP switch	1	K	N-23	-	No function yet.
EVENT TIMER RESET DOWN switch	1	L	P-21	RESET sets the event timer to 0 and stops counting. When switched to center position the event timer counts up when running otherwise it counts down.
EVENT TIMER START STOP switch	1	L	P-22	START starts the event timer, STOP stops it. The event timer is not working before lift-off and is set to 0 and started at lift-off.	Up position is spring-loaded to center position.
EVENT TIMER MIN switch	1	L	P-22	Increases or decreases the event timer minutes in tens or units depending on the EVENT TIMER RESET DOWN switch.	Spring-loaded to center position.
EVENT TIMER SEC switch	1	L	P-23	Increases or decreases the event timer seconds in tens or units depending on the EVENT TIMER RESET DOWN switch.	Spring-loaded to center position.
CRYO PRESS status light	2	A	C-31	Indicates when the pressure of a hydrogen cryogenic tank is below 220 psi or above 270 psi or the pressure of a oxygen cryogenic tank is below 800 psi or above 950 psi.
CO2 PP HI status light	2	A	C-32	Indicates when CO2 partial pressure in the suit circuit reaches 7.6 mmHg.	The light is wrongly labeled with "CO2 PRESS" .
GLYCOL TEMP LOW status light	2	A	C-32	Indicates when the temperature of the radiator outlet of the primary water-glycol coolant loop drops below -30 °F.
FC 1/2/3 status light	2	A	C-33	Indicates one of the following conditions in the respective fuel cell: H2 flow rate above 0.171 lb/hr O2 flow rate above 1.276 lb/hr Skin temperature below 360 °F or above 475 °F Condenser exhaust temperature below 150 °F or above 175 °F Radiator outlet temperature below - 30 °F	To avoid spurious alarms the temperature limits are weakened during higher time accelerations in the current implementation.
O2 FLOW HIGH status light	2	A	D-34	Indicates when total ECS oxygen flow reaches 1.0 lb/hr for a period of time exceeding 16.5 s.	To avoid spurious alarms the limit is weakened during higher time accelerations in the current implementation.
SUIT COMPRESSOR status light	2	A	D-35	Indicates suit compressor differential pressure below 0.22 psi.	To avoid spurious alarms the limit is weakened during higher time accelerations in the current implementation.
DSKY (all switches and diplays)	2	C	-	(See extra documentation for more informations)
EDS switch	2	D	M-24	When switched to AUTO, an automatic abort is triggered when the LV thrust level is below 30% between 10s and 100s after liftoff.	Should enable/disable the LV auto abort system, details about that are not known at the moment.
CSM/LM FINAL SEP 1/2 switch	2	D	M-26	Separates the LM from the CSM irreversibly including the docking probe.	Reversible undocking of the LM is done with the DOCKING PROBE EXTD/REL switch. Spring-loaded to down position.
CM/SM SEP 1/2 switches	2	D	M-26	Either switch activates CM-SM separation	Spring-loaded to down position.
S-IVB/LM SEP switch	2	D	M-27	Initiates separation of LM from S-IVB stage.	Spring-loaded to down position.
2 ENG OUT switch	2	D	N-25	-	No function yet.
LV RATES switch	2	D	N-26	-	No function yet.
TWR JETT 1/2 switches	2	D	N-26	When either switch is set to AUTO, automatic tower jettison is enabled. When both switches are set to OFF (center), automatic tower jettison is disabled. Switching either switch to up position, manual tower jettison is initiated.	Works only between SIC/SII staging and SII/SIVB staging. Up position is spring-loaded to center position.
S-II/S-IVB LV STAGE switch	2	D	O-24	Switching to LV STAGE (up) initiates manual SII/SIVB staging. Switching to up also inhibits TLI burn sequence from 18s before SIVB ignition on. SIVB engine is restartable if inhibit occurs not later than 12s after SIVB ignition.	Works only between SIC/SII staging and automatic SII/SIVB staging or during TLI.
MAIN RELEASE switch	2	D	P-24	-	No function yet.
PRPLNT DUMP AUTO switch	2	E	N-24	-	No function yet.
LAUNCH VEHICLE-GUIDANCE switch	2	F	O-24	-	No function yet.
XLUNAR INJECT switch	2	G	O-26	Inhibits TLI burn sequence until 18s before SIVB ignition, when switched to down position.
DOCKING PROBE EXTD/RETR A/B indicators	2	H	D-28	Striped-line display indicates probe in motion. Gray display indicates completed movement.
DOCKING PROBE EXTD/REL/OFF/RETR switch	2	H	E-28	EXTD/REL extends the docking probe and undocks from a docked vessel. RETR applies power to the DOCKING PROBE RETRACT PRIM and SEC switches. OFF removes power from the probe.
DOCKING PROBE RETRACT PRIM 1/2 switches	2	H	E-28	Engage docking latches to do hard dock after capture of the vessel to dock.
DOCKING PROBE RETRACT SEC 1/2 switches	2	H	E-29
SM RCS HELIUM 1 A/B/C/D indicators	2	I	F-30	Indicates if the SM RCS helium 1 valves are closed (striped-line) or open (gray).
SM RCS HELIUM 1 A/B/C/D switches	2	I	G-30	Momentary switch position OPEN/CLOSE opens or closes SM RCS helium 1 valves.	Spring-loaded to center position.
SM RCS HELIUM 2 A/B/C/D indicators	2	I	H-30	Indicates if the SM RCS helium 2 valves are closed (striped-line) or open (gray).
SM RCS HELIUM 2 A/B/C/D switches	2	I	I-30	Momentary switch position OPEN/CLOSE opens or closes SM RCS helium 2 valves.	Spring-loaded to center position.
SM RCS PRIM PRPLNT A/B/C/D indicators	2	I	I-30	Indicates if the SM RCS primary propellant isolation valves are closed (striped-line) or open (gray).
SM RCS PROPELLANT A/B/C/D switches	2	I	J-30	Momentary switch position OPEN/CLOSE opens or closes SM RCS primary propellant isolation valves.	Should open or close both SM RCS primary and secondary propellant isolation valves. Spring-loaded to center position.
CM RCS PRPLNT1/2 indicators	2	I	K-29	Indicates if the CM RCS propellant isolation valves are closed (striped-line) or open (gray).
SM RCS SEC PRPLNT A/B/C/D indicators	2	I	K-30	Indicates if the SM RCS primary propellant isolation valves are closed (striped-line) or open (gray).
CM RCS PRPLNT1/2 switches	2	I	L-29	Momentary switch position OPEN/CLOSE opens or closes CM RCS propellant isolation valves.	Spring-loaded to center position.
SM RCS SEC PRPLNT FUEL PRESS A/B/C/D switches	2	I	L-30	Momentary switch position OPEN/CLOSE opens or closes SM RCS secondary propellant isolation valves.	Should open or close SM RCS secondary propellant fuel pressure valves. Spring-loaded to center position.
UP TLM CM switch	2	J	I-28	If switched to ACCEPT (up) the AGC accepts ground telemetry data, otherwise it does'nt.	Connected to AGC channel 033, bit 10.
UP TLM IU switch	2	J	I-29	-	No function yet.
MISSION TIMER indicator	2	N	E-34	Shows mission elapsed time
MISSION TIMER HOURS switch	2	N	E-35	Increases the mission timer hours in tens or units.	Spring-loaded to center position.
MISSION TIMER MIN switch	2	N	E-36	Increases the mission timer minutes in tens or units.	Spring-loaded to center position.
MISSION TIMER SEC switch	2	N	E-36	Increases the mission timer seconds in tens or units.	Spring-loaded to center position.
MISSION TIMER switch	2	N	F-36	START starts the mission timer, STOP stops it and RESET resets it. The mission timer is set to 0 and started at lift-off.	Down position is spring-loaded to center position.
CAUTION/WARNING NORMAL/BOOST/ACK switch	2	O	F-34	When switched to BOOST, the left master alarm switch-light on the main panel will not illuminate. When switched to ACK the C/W status lights will illuminate only when a master alarm switch-light is pressed. NORMAL means normal operations.
CAUTION/WARNING CM/CSM switch	2	O	F-35	When switched to CSM both CM and SM systems are monitored. Switch to CM before CM/SM separation to monitor only the CM systems.
CAUTION/WARNING POWER switch	2	O	F-35	When switched to OFF, the C/W system is turned off, otherwise it's turned on.	Turning on the C/W system triggers the master alarm switch-light.
CAUTION/WARNING LAMP TEST switch	2	O	F-36	Switching to 1 (up) illuminates the left C/W status lights and the left master alarm switch-light, switching to 2 (down) the right side.	Spring-loaded to center position.
CABIN FAN 1/2 switches	2	P	G-34	If at least one switch is ON the primary and secondary cabin heat exchangers are turned on and the cabin fan sound goes on.
ECS INDICATORS switch	2	P	I-33	If switched to PRIM, the following indicators are showing the values of the primary water-glycol coolant loop: ECS RAD TEMP INLET meter GLY EVAP TEMP OUTLET meter GLY EVAP STEAM PRESS meter GLYCOL DISCH PRESS meter ACCUM QUANTITY meter When switched to SEC, the vales of the secondary loop are displayed.
ECS RAD TEMP INLET meter	2	P	I-34	Displays temperature of the primary or secondary radiator inlet in °F, dependent on position of the ECS INDICATORS switch.
ECS RAD TEMP PRIM OUTLET meter	2	P	I-35	Displays temperature of the primary radiator outlet in °F.
ECS RAD TEMP SEC OUTLET meter	2	P	I-36	Displays temperature of the secondary radiator outlet in °F.
GLY EVAP TEMP OUTLET meter	2	P	I-36	Displays temperature of the primary or secondary evaporator outlet in °F, dependent on position of the ECS INDICATORS switch.
GLY EVAP STEAM PRESS meter	2	P	I-37	Displays the steam pressure of the primary or secondary evaporator in psi, dependent on position of the ECS INDICATORS switch.
GLYCOL DISCH PRESS meter	2	P	I-38	Displays primary or secondary water-glycol pumps output pressure in psi, dependent on position of the ECS INDICATORS switch.
SUIT TEMP meter	2	P	I-38	Provides temperature indication of suit circuit atmosphere in °F.
CABIN TEMP meter	2	P	I-39	Provides average temperature indication of cabin atmosphere in °F.
SUIT PRESS meter	2	P	I-39	Provides pressure indication of suit circuit atmosphere in psi.
CABIN PRESS meter	2	P	I-40	Provides pressure indication of cabin atmosphere in psi.
PART PRESS CO2 meter	2	P	I-42	Provides partial pressure indication of CO2 in suit circuit atmosphere in mmHg.
ECS RADIATOR indicator	2	P	J-33	Shows grey indication if flow control No. 1 is in operation, otherwise "2" indication.	Not connected to the internal systems.
ECS RADIATORS FLOW CONT AUTO switch	2	P	J-33	Places radiator flow control in AUTO mode or selects No. 1 or 2 flow control.	The ECS RADIATOR indicator shows the selected flow control, but it's not connected to the internal systems.
ECS RADIATORS FLOW CONT PWR switch	2	P	J-33	Applies power to the ECS RADIATORS FLOW CONT AUTO switch when switched to PWR or to the ECS RADIATORS MAN SEL switch when switched to MAN SEL MODE. OFF (center) removes power from both switches.
ECS RADIATORS MAN SEL switch	2	P	J-34	RAD1 selects ECS radiator 1 as primary coolant loop radiator, RAD2 selects ECS radiator 2 as primary coolant loop radiator and OFF (center) bypasses both radiators
ECS RADIATORS HEATER PRIM switch	2	P	J-34	PRIM 1/2 enables the prim. ECS radiators heater, OFF (center) disables it.
ECS RADIATORS HEATER SEC switch	2	P	J-35	SEC enables the sec. ECS radiators heater, OFF (down) disables it.
SUIT COMPR ΔP meter	2	P	J-36	Displays differential pressure between the compressor inlet and outlet manifolds in psi.	The purpose of the left meter is unkown, it shows also the O2 flow in lb/hr at the moment.
ACCUM QUANTITY meter	2	P	J-37	Displays quantity (in %) of water-glycol in the primary or secondary glycol accumulator, dependent on position of the ECS INDICATORS switch.
H2O QUANTITY meter	2	P	J-37	Displays quantity (in %) of water in the potable or waste water tank, dependent on position of the H2O QTY IND switch.
POT H2O HTR switch	2	P	K-32	-	No function yet.
SUIT CIRCUIT ACCUM AUTO switch	2	P	K-33	AUTO 1/2 turns on the suit circuit water accumulator (part of the suit compressor CO2 absorber), OFF (center) turns it off and provides power to the SUIT CIRCUIT ACCUM ON switch.
SUIT CIRCUIT ACCUM ON switch	2	P	K-33	ON 1/2 turn on the suit circuit water accumulator, OFF (center) turns it off.	Spring-loaded to center position.
SUIT CIRCUIT HEAT EXCH switch	2	P	K-34	ON turns on the primary and secondary suit heat exchanger, BYPASS turns them off, center position does nothing.
SEC COOLANT LOOP EVAP switch	2	P	K-35	EVAP turns on the secondary glycol evaporator in automatic mode, RESET closes the steam pressure valve and OFF (center) turns it off.
SEC COOLANT LOOP PUMP switch	2	P	K-35	AC 1/2 turn on the secondary water-glycol pump, OFF (center) turns off the pump.
H2O QTY IND switch	2	P	K-36	POT selects the potable water tank quantity signal for display on the H2O QUANTITY meter, WASTE selects the waste water tank.
GLYCOL EVAP TEMP IN switch	2	P	K-36	When switched to AUTO the prim. glycol evaporator inlet temp. valve automatically regulates the temperature of coolant entering the evaporator inlet by mixing hot and cold water-glycol. MAN turns off the automatic control.	Manual control of the prim. glycol evaporator inlet temp. valve is not possible at the moment, because the panel for that is missing.
GLYCOL EVAP STEAM PRESS AUTO MAN switch	2	P	K-37	When switched to AUTO the primary evaporator steam pressure is controlled automatically and the GLYCOL EVAP STEAM PRESS INCR DECR switch is disabled. Switching to MAN turns off the automatic control and enables the GLYCOL EVAP STEAM PRESS INCR DECR switch.
GLYCOL EVAP STEAM PRESS INCR DECR switch	2	P	K-37	INCR increases the primary evaporator steam pressure, DECR decreases it. OFF (center) does nothing. Valve full travel requires 58s.	Spring-loaded to center position.
GLYCOL EVAP H2O FLOW switch	2	P	K-38	AUTO turns on the primary evaporator, OFF (center) turns it off and ON turns it on manually running at maximum evaporation.	Down position is spring-loaded to center position.
CABIN TEMP AUTO MAN switch	2	P	K-38	When switched to AUTO, cabin temperature is controlled by the CABIN TEMP AUTO control thumbwheel. MAN turns off the automatic control.	Manual control of the cabin temperature is not possible at the moment, because the panel for that is missing.
CABIN TEMP AUTO control	2	P	K-40	Thumbwheel permits control of the cabin temperature, which can be selected between 70 °F and 80 °F. The numbers on the thumbwheel don't correspond to any temperature.
H2 PRESSURE 1/2 meters	2	Q	F-37	Displays H2 tanks No. 1 and No. 2 pressure in psi
O2 PRESSURE 1 meter	2	Q	F-38	Displays pressure in psi of O2 tank No. 1 or ECS surge tank as selected by O2 PRESS IND switch
O2 PRESSURE 2 meter	2	Q	F-38	Displays O2 tank No. 2 pressure in psi
H2 QUANTITY 1/2 meters	2	Q	F-39	Displays quantity (% remaining) of H2 in tank No.1 and No. 2
O2 QUANTITY 1/2 meters	2	Q	F-40	Displays quantity (% remaining) of O2 in tank No.1 and No. 2
H2 HEATERS 1/2 switches	2	Q	G-35	Controls power to H2 tanks No. 1 and No. 2 heater elements. When switched to AUTO, heaters are turned on at 225 psi and turned off at 260 psi.
O2 HEATERS 1/2 switches	2	Q	G-37	Controls power to O2 tanks No. 1 and No. 2 heater elements. When switched to AUTO, heaters are turned on at 865 psi and turned off at 935 psi.
O2 PRESS IND switch	2	Q	G-37	Connects O2 tank No. 1 pressure transducer or ECS SURGE TANK pressure transducer to O2 tank No. 1 TANK PRESSURE indicator.
H2 FANS 1/2 switches	2	Q	G-38	Controls power to H2 tanks No. 1 and No. 2 fans motors. When switched to AUTO, fans are turned on at 225 psi and turned off at 260 psi.
O2 FANS 1/2 switches	2	Q	G-40	Controls power to O2 tanks No. 1 and No. 2 fans motors. When switched to AUTO, fans are turned on at 865 psi and turned off at 935 psi.
HIGH GAIN ANTENNA PITCH POSITION switch	2	R	N-39
SUIT CAB ΔP meter	2	S	C-28	Displays difference in pressure between suit circuit and cabin in inH2O.
O2 FLOW meter	2	S	C-29	Provides total rate of flow indication of oxygen supplied to ECS downstream of main regulator in lb/hr.
FC REACS VALVES switch	3	D	P-42	When switched to NORM enables the FUEL CELL REACTANTS 1/2/3 switches are enabled. When switched to LATCH operating the FUEL CELL REACTANTS 1/2/3 switches has no effect, the valves are latched.
H2 PURGE LINE switch	3	D	P-42	When switched to HTR power is applied to the hydrogen purge line heaters.	The switch has to be in HTR position to do H2 fuel cell purging.
FUEL CELL FLOW H2/O2 meters	3	E	F-44	Indicates flow rate of H2/O2 into the fuel cell selected by the FUEL CELL INDICATOR switch.
FUEL CELL MODULE TEMP SKIN/COND EXH meters	3	E	F-45	Indicates skin and condenser exhaust temperature of the fuel cell selected by the FUEL CELL INDICATOR switch.
FC RAD TEMP LOW indicator	3	E	G-46	Indicates if the glycol temperature at radiator outlet of the fuel cell selected by the FUEL CELL INDICATOR switch is above -30°F (gray) or below (striped-line).
pH HI indicator	3	E	H-44	-	Not connected to the internal systems
FUEL CELL RADIATORS 1/2/3 indicators	3	E	H-45	Indicates full fuel cell radiator operation (gray) or bypassed operation (striped-line).
FUEL CELL RADIATORS 1/2/3 switches	3	E	I-45	Momentary switch position NORMAL/EMER BYPASS operates radiator valve to use of full radiators or to partially bypass the radiators.	Spring-loaded to center position.
FUEL CELL INDICATOR switch	3	E	I-47	Selects desired fuel cell to be monitored by the FUEL CELL FLOW/MODULE TEMP meters, the pH HI indicator and the FC RAD TEMP LOW indicator.
FUEL CELL HEATERS 1/2/3 switches	3	E	J-45	Activates in-line heaters circuits for automatic operation or deactivates them. When switched to automatic operation, heaters are turned on at 385 °F and turned off at 390 °F.
FUEL CELL PURGE 1/2/3 switches	3	E	K-45	Switching to H2 PURGE opens the H2 purge valve, O2 PURGE opens the O2 purge valve, CENTER closes all purge valves (normal switch position).
FUEL CELL REACTANTS 1/2/3 indicators	3	E	L-45	Indicates if the fuel cell H2 and O2 valves are closed (striped-line) or open (gray).
FUEL CELL REACTANTS 1/2/3 switches	3	E	M-45	Momentary switch position ON/OFF opens or closes fuel cell H2 and O2 valves, that means the fuel cell is turned on or off.	Unlike in reality the fuel cells are restartable. Spring-loaded to center position.

Right Panel

Name	Panel Locator			Function	Remarks
	Panel	Area	Grid
SUIT COMPRESSOR 2 switch	4	C	N-60	Switch position AC1/2 applies power to suit compressor 2 from AC bus 1/2, switch position OFF turns off the suit compressor.
ECS GLYCOL PUMPS switch	4	C	O-59	OFF turns off the primary water-glycol pump, the other positions turn it on.
SUIT COMPRESSOR 1 switch	4	C	O-60	Switch position AC1/2 applies power to suit compressor 1 from AC bus 1/2, switch position OFF turns off the suit compressor.
FUEL CELL PUMPS 1/2/3 switches	5	A	H-54	Switch position AC1/2 applies power to fuel cell 1/2/3 cooling pumps from AC bus 1/2, switch position OFF turns off the fuel cell cooling.	The fuel cells cannot be damaged because of overheating at the moment.