ProcedureCouch/TableSetup & CalibrationAdjust

Adjust the couch descent (lowering) speed — solenoid throttle valves L21/L24

Set how fast the patient couch lowers by adjusting the two solenoid throttle valves, L21 and L24. Both valves must end up with identical openings — the procedure works by fully closing both valves from a marked reference point, then reopening them together at the same rate.

Applies to
Activion16 (TSX-031A). No model- or revision-specific restriction is stated in source for this task.
Personnel
"Not specified in source manual for this section"
Steps
5 steps
Source
2D201-112EN*D §2.6.1 (p.155) — Adjustment of vertical motion speed (couch descent speed via the L21/L24 solenoid throttle valves)

Tools & parts

ItemPart numberQty
Solenoid throttle valve L21n/a in source
Solenoid throttle valve L24n/a in source

Safety

CAUTION

Hazard: Working on the parts inside the lifter arms, near the upper frame, while performing this adjustment

Consequence: Crush injury

Avoidance: Be careful not to be crushed by the upper frame while working on the parts inside the lifter arms

CAUTION

Hazard: Leaving the knob detached from the solenoid valve and then opening that valve in that state

Consequence: Oil leaks out through the knob hole

Avoidance: Do not leave the knob detached from the valve. After adjusting the speed, tighten the L21 locking nut (turn the nut clockwise) to secure it

Full step-by-step for Adjust the couch descent (lowering) speed — solenoid throttle valves L21/L24

All 5 steps are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with the real figures from the source.

Open the full procedure

Related Couch/Table guides

Adjust the couch height display6 stepsAdjust the couch-top longitudinal belt tension6 stepsAdjust the couch-top supporting rollers (height, level, and sway)8 stepsChange the patient couch vertical stop positions2 stepsCheck the couch-top (horizontal) travel speed4 stepsCouch — routing of the internal cables at the linkage unit (work procedure)8 steps
View all Activion16 (TSX-031A) guides

Source: 2D201-112EN*D §2.6.1 (p.155) — Adjustment of vertical motion speed (couch descent speed via the L21/L24 solenoid throttle valves). Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.