Mechanical Relay - V3

Mechanical Relay - V3



Mechanical 'Mini DC' Relay - SLAYER V1-V3

Alert
SLAYER recommends all service be performed by an experienced SLAYER Espresso trained technician. For a technician reference near you, please contact SLAYER Support at (206)-284-7171 (#1 in Directory) or email support@slayerespresso.com.

The SLAYER Espresso V1-3 model utilizes a series of mechanical 'mini DC' relays to perform various machine functions. Each solenoid valve, in addition to the pump motor, has an independent relay which performs a specific function based on the received signal. 

Info
Mechanical relays may function:
  1. AC or DC voltage.
  2. N/C or N/O.




Parts:
  1. 30000-20360 24V DC MINI RELAY
Idea
Each Brew Valve, Needle Valve, and pump motor relay is orientated in the N/O position. The only mechanical relay on the electronics panel which is NOT in the N/O position is the autofill kill relay. The autofill kill relay is orientated in the N/C position.

Troubleshooting:
Since the 'Mini DC' relays are mechanical, though robust, they may fail under certain conditions. Symptoms of a faulty mechanical relay include:
  1. Solenoid valves not activating.
    1. Solenoid is not receiving voltage at electrical boot.
      1. Solenoid Troubleshooting.
  2. Intermittent solenoid activation.
    1. Quick, light pulse clicking sound of a faulty relay coming from electronics panel.
  3. Chattering solenoid valve.
  4. Pump continuously running.
Mechanical relays share common voltage on the circuit. In rare cases, one failure, in the case of a short, may cause additional faults.

To identify a faulty mechanical relay. Verify input signal is closing to complete the circuit. If end component (such as a Brew Solenoid for an example) is not receiving voltage yet signal circuit (N/C magnet switch on group cap) is functional. Then the mechanical relay may be at fault.

Alert
Each mechanical relay serves a different function and is group specific. For schematics and further support, please contact SLAYER Support.


Questions or concerns? Please contact support@slayerespresso.com or call 206 284 7171 (#1 in Directory).

    • Related Articles

    • Solenoid Troubleshooting - Universal

      Field technicians guide for troubleshooting solenoid valves. SLAYER recommends all service be performed by an experienced SLAYER Espresso trained technician. For a technician reference near you, please contact SLAYER Support at (206)-284-7171 (#1 in ...

    • Pre-Infusion Solenoid Troubleshooting - Steam LP

      Pre-Infusion Solenoid Troubleshooting - Steam LP SLAYER recommends all service be performed by an experienced SLAYER Espresso trained technician. For a technician reference near you, please contact SLAYER Support at (206)-284-7171 (#1 in Directory) ...

    • SSR Operation & Troubleshooting - Universal

      Solid State Relay Operation & Troubleshooting SLAYER recommends all service be performed by an experienced SLAYER Espresso trained technician. For a technician reference near you, please contact SLAYER Support at (206)-284-7171 (#1 in Directory) or ...

    • Long Backflush Procedure - Universal

      Long Backflush - Unclogging Brew Solenoid SLAYER Espresso Machines feature 24vDC 3-Way Solenoid Valves on each group head. The valves are located off the rear of the group neck and are the main gateway for water flowing through the brew circuit. ...

    • Cleaning Autofill (Inlet) Solenoid Valve - Espresso Single

      Cleaning Autofill Solenoid - Espresso Single Group SLAYER recommends all service be performed by an experienced SLAYER Espresso trained technician. For a technician reference near you, please contact SLAYER Support at (206)-284-7171 (#1 in Directory) ...