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Hab battery volts dropped to 18V during our long distance EVA today, despite only fridge and communications left connected to power. UPS kicked in. EVA team returned at 15:30 and restarted Coleman generator. However, inverter did not load generator and Hab continued to use battery/UPS alternately. Finally UPS battery was exhausted and all power to Hab lost for 20mins. We noted that generator output volts were too high (130V). Don assisted us in hooking up a hair-dryer to generator to drop voltage. This was successful and after a 5min delay the inverter accepted the generator input. Will need to run generator for 8-10hrs per day, as this generator delivers 10-15A to Hab, where Casper delivers up to 30A. This means the Hab battery is very slow to recharge. We need to refuel the generator every 5-6hrs to ensure it doesn't run out of fuel and cause shutdown power spikes while still connected to Hab. Stopped and refuelled at 20:30, and restarted with no need for hairdryer load. Currently charging Hab batteries. At 08:00 and 20:30 Coleman fuel level: 10% full, refilled to 100%. Oil checked and refilled. Fuel Status: ATV fuel (red gasoline) tanks: 4xfull, 1xhalf empty, 6xempty Note: Will need more gasoline if we continue to run the Coleman generator beyond tomorrow. It uses almost half a red container each time we refuel it. We will refuel it twice a day. Diesel fuel bottles: 2xfull Oil Bottles: Generator Main fuel tank: three quarters full Propane tank: 45.5% Water Status: To avoid using water heater, we are boiling water on the stove for all washing and showers. This has meant a reduced water usage overall. Though we are now not losing water through the broken pipe, so our water efficiency should be higher. Internal tank: At 07:30, water level was 54gal. At 16:20, water level was 44gal, and refilled to 55gal. At 18:30 level was 41. Total water used = 19gal Water meter change: 2203.2 gal at 07:30. 2223.1gal at 18:30. Total Water used = 19.9gal External water tank: 14.5inches on deeper side Flushes: 3 Showers: 5 sponge baths + 1 laundry wash Transportation: ATVs not used for EVA today. No change in fuel/oil levels. Pressurised Rover: Used for long EVA today to Factory Butte (to ensure crew were not present when media team arrived to photograph Hab). Petrol supplemented with 1 gasoline container. Coolant level topped up during EVA. Oil checked - ok. Mars Suits: PLSS #5, #2 still out of action. PLSS #2 opened, and found that battery is charged, but there is no voltage across the switch, suspect a broken wire, will further investigate. PLSS rechargers switched off last night to reduce a potential source of power consumption (believe me - if it was plugged in, we unplugged it last night!). This morning PLSS #3,#4,#6 taken on EVA, as well as the remaining MarsSkin PULSS. PLSS #6 did not work when deployed on EVA away team and is now not charging either. Will investigate. MarsSkin used with an old 9V battery. Worked in the field for just under 1hr. New battery will be used next time and expect 1-2hrs performance from a single battery. MDRS old radio headsets used with MarsSkin suit as Australian radios appear to work on a different frequency. Comms with MarsSkin achieved. Will plan a suit maintenance day for tomorrow/Sunday. HVAC: Heating switched on at 19:30 for an hour while generator is running. Computers & Network: Operational. Hab Com lost when power to Hab lost around 16:00 for about 20-30mins. Webcam inactive also during this time. Comms re-established once generator online, webcam running again also. GreenHab: Miscellaneous: Thanks for update on delivery date of stator coil being Saturday - that will be eagerly awaited by the crew. Will have a look for panel to cover LP water heater, and install in a break in the wind/rain over the next few days if we can see how to install it.
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