Zimmer ATS 750
Zimmer · Model ATS 750
Controls: On/Standby switch, pressure switch, time switch, cuff inflate and alarm silence switch. Display: Pressure - Red 14 segment light emitting diodes (LED), Time - Red 14 segment LED, AC Indicator light - Green LED. Cuff Pressure Range: 50-475 mmHg, 5 mmHg increments Pressure Accuracy: +/-5 mmHg (50-475 mmHg) Pressure Regulation: +/-6 mmHg of set point (10 second average under non-transient conditions without external leaks) Maximum Pressure: 475 mmHg cuffs Time Alarm Set Range: 0-240 minutes, 5-minute increments Timer Accuracy: 0.25% of elapsed time Internal Diagnosis: Program, memory, watchdog timer, transducer calibration, improper valve actuation.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Cuff will not inflate
HighSymptoms: Main or second cuff does not pressurise on command.
Root cause: Membrane panel not seated, pump not plugged in, a stuck-open deflate valve, or a valve-driver / harness fault.
Cuff will not deflate
HighSymptoms: Cuff stays pressurised when deflation is commanded.
Root cause: Deflate valve stuck shut, or a valve-driver / harness fault.
Pressure inaccurate / self-check calibration fault
HighSymptoms: Displayed pressure disagrees with a reference, self-check on power-up fails.
Root cause: Pressure transducer drift or a control-board calibration fault.
Cuff / hose leak detected
MediumSymptoms: System repeatedly tops up the cuff, leak alarm, set pressure not held.
Root cause: Cuff bladder or hose leak, or a loose positive-locking connector.
Runs on battery / short backup time
MediumSymptoms: Battery indicator lit or flashing during normal use, unit dies on transport.
Root cause: Aged backup battery or a charger fault (battery is for power-loss / transport only).
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Air pump
Class Major service partRel. cost $$$R&R Difficult
Inflate / deflate valve assembly
Class Major service partRel. cost $$R&R Difficult
Pressure transducer
Recalibrate after replacement.
Class Major service partRel. cost $$R&R Moderate
Membrane panel / keypad
Class Major service partRel. cost $$R&R Moderate
Backup battery
Class Periodic replacementRel. cost $$R&R Fairly easy
Tourniquet cuff and hose
Class Periodic replacementRel. cost $$R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Air pump | Major service part | $$$ | Difficult |
| Inflate / deflate valve assembly | Major service part | $$ | Difficult |
| Pressure transducer Recalibrate after replacement. | Major service part | $$ | Moderate |
| Membrane panel / keypad | Major service part | $$ | Moderate |
| Backup battery | Periodic replacement | $$ | Fairly easy |
| Tourniquet cuff and hose | Periodic replacement | $$ | Easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Cuff will not inflate
- Confirm the membrane panel is fully seated at its connector (P8 on the ATS 3000).
- Check the internal tubing is not pinched and all pneumatic connectors are mated.
- Confirm the pump is plugged in and its harness is undamaged.
- Check the deflate valve is not stuck open and the valve harness is intact.
- Run the functional and calibration checks after any repair.
Symptom: Pressure reading suspect
- Power-cycle and let the self-check calibration run.
- Tee a calibrated reference manometer to the cuff port.
- Compare at several set pressures across the range.
- If out of tolerance, recalibrate per the service manual or replace the transducer.
- Re-verify against the reference and record the date.