The following procedures apply to the H-ESI, ESI, and APCI spray inserts.

The following figure shows an example of the H-ESI spray insert guide pins and the guide pin slots on the heater assembly.

Figure H-ESI spray insert (left) and heater assembly (right)
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No.DescriptionNo.Description

1

Guide pins

3

Guide pin slots

2

API spray insert nut

4

Heater assembly on the API source housing

Remove or Install the Spray Insert

Task

Procedure

Remove the API spray insert

Procedure

  1. Open the Tune application and select System Standby to place the MS in Standby mode.
  2. Wait approximately 20 minutes until the API source housing and its components cool to room temperature.
  3. Disconnect the sample line from the spray insert’s sample inlet.
  4. Loosen the spray insert nut in the counter-clockwise direction.
  5. Lift-up and remove the spray insert from the heater assembly.

Install the API spray insert

Procedure

  1. Align the guide pins on the spray insert with the guide pin slots in the heater assembly.
  2. Carefully place the spray insert into the heater assembly.
  3. Finger tighten the spray insert nut.