Group Magnet Switch Troubleshooting - Steam Series

Group Magnet Switch Troubleshooting - Steam Series


Group Mag Switch Troubleshooting
Steam LP & Steam X


Objective:
Inside the group head is a tongue with a magnet installed on it. This magnet comes in contact with the magnetic reed switches which send signals to the control board for brewing. Occasionally, those switches can weaken or stick. This guide shows how to test their functionality.

Time:
10 minutes

Tools:
#3 Philips Head Screw Driver
Magnet
Multimeter

Parts:
30000-20032 Mag Switch, N/C, pinned
30000-20042 Mag Switch, N/O, pinned
30000-32010 Molex Mini-Fit Jr Receptacle Housing, 2x1 (M)

Procedure

Step 1:
Turn off the machine power switch.

Step 2:
Loosen group cap screws, remove group cover and set aside.



Step 3:
Place a magnet against the switch with the collar. (Off position)
Disassembled magnetic tongue from group.

Step 4:
Remove cup tray panels and set aside.

Step 5:
Identify the magnet switches that correspond with the faulty group.


Step 6:
Disconnect the Molex plug with the collar. Place the multimeter probes into each port of the male Molex connection.


Step 7:
With the multimeter set to continuity, test the continuity of each switch. With the multimeter leads on the Molex pins, remove the magnet from the magnet switch. Verify the continuity changes once the magnet and the switch are separated. 
  1. The switch on the right is N/C (Normally Closed) meaning it should only be active and have continuity when a magnet is not present. Conversely, there is no continuity when a magnet is present.
  2. The switch on the left is N/O (Normally Open) meaning it should only be active and have continuity when a magnet is present. Conversely, there is continuity when a magnet is present.
The continuity should reliably change based on the presence of the magnet.


If a switch does not change with the presence of a magnetic field, it has likely failed and should be replaced. 


    Questions or concerns? Please contact: support@slayerespresso.com
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