Mechanical Relay - V3

Mechanical Relay - V3



Mechanical 'Mini DC' Relay - SLAYER V1-V3

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)-281-7171 (#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. 

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




Parts:
30000-20360 24V DC MINI RELAY

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.
  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.

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


Questions or concerns? Please contact support@slayerespresso.com

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