Drive Medical Viper
Drive Medical · Model Viper
8" front casters have 3 height adjustments Back height adjustable from 18" - 20" Carbon steel black powder coated frame double coated for an attractive, chip-proof, maintainable finish Flip up anti tippers Push to lock wheel locks Swing-away footrests or elevating legrests with tool-free adjustable length riggings Composite footplates with heel loops are durable and lightweight Composite mag-style wheels with aluminum hand rims are lightweight and maintenance free Composite steel lined front receiver is angled so the arm will lock into place every time Dual axle provides easy transition of seat height to hemi level Durable, flame retardant nylon upholstery resists mildew and bacteria Easier to propel and transport Flip-back arms, allow for easy transfer Frame style eliminates seat guides and allows for custom backs and accessories Nylon padded armrests provide added patient comfort Precision sealed wheel bearings in front and rear ensure long lasting performance and reliability The front mounted release lever can be flipped up or down depending on the patients needs Urethane rear tires and casters offer superior performance, smoother ride and are lightweight
Key tips
- ·Casters and the wheel-lock brake take the most day-to-day wear - check both every PM, not just on complaint.
- ·A cracked weld or loose frame joint is a safety-critical finding - pull the unit from service until it's repaired.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Brake / wheel-lock failure
HighSymptoms: Won't hold position, rolls when locked.
Root cause: Brake pad wear or linkage failure.
Caster / wheel wear
MediumSymptoms: Hard to push straight, wobbles or drags.
Root cause: Bearing wear or a flat-spotted wheel.
Frame / weld fatigue
HighSymptoms: Visible crack or looseness at a joint.
Root cause: Repeated load cycling.
Upholstery / surface tear
MediumSymptoms: Torn or cracked cover, exposed padding.
Root cause: Cleaning-chemical and UV degradation, routine wear.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Caster wheel assembly
Class Periodic replacementRel. cost $$R&R Fairly easy
Brake / wheel-lock mechanism
Class Periodic replacementRel. cost $$R&R Fairly easy
Upholstery / seat or surface cover
Consumable - replace on visible wear or tear.
Class Periodic replacementRel. cost $R&R Easy
Frame hardware (bolts, pins, bushings)
Class Major service partRel. cost $R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Caster wheel assembly | Periodic replacement | $$ | Fairly easy |
| Brake / wheel-lock mechanism | Periodic replacement | $$ | Fairly easy |
| Upholstery / seat or surface cover Consumable - replace on visible wear or tear. | Periodic replacement | $ | Easy |
| Frame hardware (bolts, pins, bushings) | Major service part | $ | Fairly easy |
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.
- ·Caster / wheel and brake function check
- ·Frame, weld, and mounting-hardware inspection
- ·Upholstery / surface condition check
- ·Annual full PM
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Caster / wheel wear
- Confirm the presentation - typically hard to push straight, wobbles or drags.
- Check the most likely cause first: bearing wear or a flat-spotted wheel.
- Inspect the affected subsystem against the manufacturer's inspection checklist.
- If the fault is confirmed and not a field adjustment, service or replace the caster wheel assembly per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Brake / wheel-lock failure
- Confirm the presentation - typically won't hold position, rolls when locked.
- Check the most likely cause first: brake pad wear or linkage failure.
- Inspect the affected subsystem against the manufacturer's inspection checklist.
- If the fault is confirmed and not a field adjustment, service or replace the brake / wheel-lock mechanism per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Ambulance / transport vehicles
- Emergency Department
- Inter-facility transport teams
Documents & Manuals
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