What to know
- This objective is a placement-and-range check: the correct power device must be deployed near the Fluid Supply Unit.
- If progress doesn’t trigger, it’s usually the wrong item (often a different pylon/relay) or the pylon is placed too far away.
- The fastest way to clear it is to redeploy the pylon right beside the Fluid Supply Unit, then confirm the objective updates.
- This step is short and is commonly cleared immediately after the pylon is placed correctly.
In Arknights: Endfield, this mission step is straightforward but can feel confusing because nothing “happens” until the game detects the right device powering the right facility.

Reference table: mission elements used in this step
| Element | What it is | What it needs to satisfy the objective |
|---|---|---|
| Fluid Supply Unit | A fluid system facility that must be powered before it can operate | Must be within power range and become powered/active |
| Xiranite Pylon | A placeable power device for nearby facilities | Must be the specific “Xiranite Pylon” and placed close enough |
How to power the Fluid Supply Unit with the Xiranite Pylon
Step 1: Locate the objective marker and identify the Fluid Supply Unit

Go to the marked location for the task and visually confirm the Fluid Supply Unit that the objective is referring to. If multiple devices are nearby, stand close to each until the objective text clearly corresponds to the intended unit.
Step 2: Open build/deploy and select the correct item

Open the facility/build placement menu and look specifically for “Xiranite Pylon.”

If a similarly named power item appears (for example, another pylon type or a relay), do not use it for this objective.
Step 3: Place the Xiranite Pylon right next to the Fluid Supply Unit

Deploy the Xiranite Pylon on valid ground as close to the Fluid Supply Unit as possible. For this kind of objective, placing it “nearby” is sometimes not enough—placing it beside the unit is the most reliable way to satisfy the game’s range check.
Step 4: Confirm the power state change and objective update

After placement, watch for the Fluid Supply Unit to reflect being powered (for example, visually activating or no longer appearing unpowered). Then check the objective tracker; if it updates immediately, the step is complete.
Step 5: If it doesn’t complete, reposition instead of troubleshooting everything else

If the objective still doesn’t progress:
- Pick up/redeploy the Xiranite Pylon even closer to the unit (nearly touching distance).
- Make sure the placed device is actually the Xiranite Pylon, not a different power item.
- Rotate placement if needed and try a second redeploy; some objectives only re-check after redeployment.
Placement tips that make the trigger reliable
The most consistent pattern for this objective is a simple one: place the Xiranite Pylon beside the Fluid Supply Unit, pause briefly, and confirm the task completes. If the pylon is placed on a different platform level, behind obstacles, or at the edge of range, the unit may not register as powered even if it looks “close enough.”
Troubleshooting table: what to do when it won’t progress
| Issue | What it usually means | Fix that works fastest |
|---|---|---|
| Pylon placed, but objective stays incomplete | Out of range or wrong power device | Pick up and redeploy the Xiranite Pylon directly beside the Fluid Supply Unit |
| Can’t find Xiranite Pylon in the menu | Not looking in the correct build/deploy category or inventory source | Check all facility/power categories and any available inventory/depot lists |
| Objective seems to refer to “a” unit but area has several devices | Wrong target facility | Use the marker/tracker proximity, then place the pylon next to that exact unit |
Rewards
| Reward | Quantity |
|---|---|
| Gold material | 2 |
| Currency/credits | 5.3K |
| Blue component | 7 |
| Blue crystal material | 2 |
| Green component | 13 |
| EXP | 300 |

Next steps after completion
Once the objective updates, follow the next quest marker and continue the chain; this step is typically a quick gate to ensure the fluid system facility is powered before the next instruction appears.