Midmark IQstress
Midmark · Model IQstress
The IQstress system includes a lightweight, digital ECG, integrated stress analysis software, stress cart and a medical grade treadmill. Everything is just a click away with a user-friendly, one-level menu Customizable user profiles make procedure setup fast and easy Quick access to customized test protocols, measurement parameters, display formats and reports Seven protocols preprogrammed to begin testing immediately, including the Bruce and Modified Bruce Easily review up to four stress tests for side-by-side comparison of a patient’s progress Correct, ergonomic patient testing orientation Summarize and review test results with detailed rhythm strips and averaged beats immediately after the test is completed, either locally or from any network The medical grade treadmill is reliable, quiet and runs smoothly for assured patient comfort.
Key tips
- ·A no-signal/flatline alarm gets checked on the patient first, not the monitor - rule out a real clinical event before troubleshooting.
- ·Recalibrate NIBP against a reference manometer, not just a self-test pass.
- ·Reused patient cables (SpO2, ECG leads) are a common source of intermittent-fault complaints - swap the cable before the module.
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.
Belt slips, drifts or runs rough
HighSymptoms: Walking belt slips under load, tracks off-centre, jerky or noisy.
Root cause: Worn or stretched belt, a worn deck, loss of drive-belt tension, or worn rollers.
Will not start / no speed or incline response
HighSymptoms: Console dead, belt will not move, incline will not change, error code.
Root cause: Breaker / power, a drive-motor or controller fault, a lift-motor fault, or a console-cable fault.
Speed or incline inaccuracy
MediumSymptoms: Actual speed / grade does not match the display or protocol.
Root cause: Speed-sensor or incline-potentiometer / limit-switch fault - needs calibration.
Drive-motor / controller fault
MediumSymptoms: Motor cuts out under load, burning smell, controller error.
Root cause: Worn motor brushes / bearings or a drive-controller fault.
Emergency-stop / safety-key fault
HighSymptoms: E-stop or safety key does not stop the belt, or stops it unexpectedly.
Root cause: Failed e-stop switch / magnet or its wiring - a safety function.
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.
Walking belt & deck
Class Periodic replacementRel. cost $$R&R Moderate
Drive belt
Class Periodic replacementRel. cost $R&R Moderate
Drive motor / controller
Class Major service partRel. cost $$$R&R Difficult
Incline (lift) motor / potentiometer
Class Major service partRel. cost $$R&R Moderate
Roller / bearing set
Class Major service partRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Walking belt & deck | Periodic replacement | $$ | Moderate |
| Drive belt | Periodic replacement | $ | Moderate |
| Drive motor / controller | Major service part | $$$ | Difficult |
| Incline (lift) motor / potentiometer | Major service part | $$ | Moderate |
| Roller / bearing set | Major service part | $$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Routine cable and lead-wire inspection for fraying/wear
- ·Battery conditioning cycle
- ·NIBP calibration check against a reference manometer
- ·ECG / SpO2 accuracy verification against a patient simulator
- ·Annual electrical safety test
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: Belt slips or tracks off
- Check and set the walking-belt tension and tracking per the manual.
- Inspect the deck and belt for wear (a worn deck kills belts).
- Check the drive-belt tension.
- Lubricate the deck if the design requires it.
- Replace the belt / deck as a set when worn.
Symptom: Will not start or speed/incline wrong
- Confirm mains, the breaker and the safety key.
- Read any console error code.
- Check the console cable and the drive / lift-motor connections.
- Verify belt speed with a tachometer and calibrate speed / incline.
- Replace the drive controller, motor or incline potentiometer as isolated; confirm the e-stop stops the belt.
Technical Specs
- EKG/ECG Type
- Stress
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- ICU / CCU
- Emergency Department
- OR / PACU
- General med-surg floors
- Step-down units
- Telemetry units
Documents & Manuals
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Describe a symptom or error code. Bio answers from this device's own documented error codes, failure modes, parts, and guides.
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