There is a table located directly opposite the Fuel Gem Extractor that the Backpack spawns on when approached.
Fuel Gems must be placed by hand in the designated slots on the Fuel Gem Extractor panel, found in the Washplant, and can be purchased from the Store.
Once a Fuel Gem is empty, the player can replace it by taking it from the panel and replacing the slot with a new gem.
The Fuel Gem Extractor holds 7 slots for Fuel Gems to be placed. Only a single gem can be placed in each slot, and gems can be removed or placed into the slots regardless of their energy level.
Above each slot is a horizontal beam which lights up when a gem is placed in the slot below it. The brighter the light, the more energy is contained within the gem that the beam correlates to. Empty gems display the same beam strength as slots with no gem provided.
Above the light beams is 7 light bulbs representing the total time remaining till all the provided gems run out of power.
In order from left to right, the 1st bulb represents days, the 2nd-3rd represents hours, the 4th-5th represents minutes, and the 6th-7th represents seconds.
Removing empty Fuel Gems has no effect on the timer, however, removing Fuel Gems with energy will reduce the timer by the running time that gem would have provided.
The Fuel Gem Extractor can be upgraded in the Mine Upgrade Area for an increasing price each level.
Each upgrade increases the efficiency of Fuel Gems, increasing the time each gem powers the Washplant.
|2||50 Rusty Coins||70%|
|3||10 Silver Coins||80%|
|4||20 Gold Coins||90%|
|5||40 Platinum Coins||100%|