Hot Water Mix Valve Troubleshooting

Hot Water Mix Valve Troubleshooting

Slayer Steam X, LP, EP, & Espresso V3

Remove Hot Water Mix valve to diagnose fault or replace assembly.

Troubleshooting leaking mix valve may be accomplished while assembly is on the machine.

Common Causes: Particles (scale, sediment) or worn component not allowing full closure of solenoid.

Symptoms: Leaking water from Hot Water spout or assembly. Hot water not activating due to a seized solenoid valve. 

Time: 45 mins

Parts: 
V3 - 30000-20351 Hot Water Solenoid Valve, 24 VDC
Steam EP/LP - 99015-10070 Hot Water Mix Assy, Steam
Steam X - 99005-20351 Hot Water Assembly, Steam


Tools:
3/8" 9/16" 5/8" Wrenches, Crescent Wrench.


Step 1: Turn off heating elements in display menu settings. Power off machine and turn off incoming water. Remove cup tray, drain steam tank, and remove left side panel.
Clamp any vent tubing to prevent discharge from drain bar.

Step 2: Identify Hot Water Mix Valve and either: 
  1. Remove assembly from machine.
  2. Remove copper line (9/16" fitting on Slayer Steam. 5/8" fitting on Slayer Espresso V3) to Hot Water spout allowing disassembly of valve.
While diagnosing. Be careful to not torque assembly as it may damage the plastic lock washer in image below.
Step 3: Hot Water Mix Valve components.


Step 4: Brace valve with Crescent wrench and loosen piston with 3/8" wrench. 


Step 5: Inspect o-ring on piston, valve orifices, and plunger for any signs of corrosion, scale, or obstructing particles. Rinse with clean water.


Step 6: Reassemble and install Hot Water Mix Valve. Close ball valve, turn on water, check for leaks, and power on machine. Once steam tank has filled, actuate brew group for 10 seconds, and turn on heating elements in display menu settings. Once machine has reached it's set steam tank pressure verify hot water spout leak has been resolved.

If you have any questions or concerns, please contact support@slayerespresso.com

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