LINAK A/S Technical Documentation
Linear Actuators for Medical and Home Care Applications
LINAK Specification
Adjustable Bed Motor Duty Cycle & Thermal Shutoff
Technical analysis of Linak and Okin linear actuator duty cycles (2 min on / 18 min off) and thermal overload protection.
2 Min ON / 18 Min OFF Duty Cycle
Direct answer summary
Linear actuator motors manufactured by Linak and Okin (which power over 90% of residential adjustable bed bases) operate on a standardized 10% duty cycle: maximum 2 minutes of continuous operation followed by 18 minutes of mandatory rest. If the bed is articulated repeatedly or children play with the remote, the internal thermistor reaches its thermal ceiling (typically 105°C) and activates automatic thermal shutoff, temporarily disabling the motor until it cools.
Key points
Actuators operate on a strict 10% duty cycle: maximum 2 minutes continuous run time.
Internal thermal overload protection triggers shutoff if temperature exceeds 105°C.
Motor automatically resets and restores function after a 15 to 30 minute cooling period.
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Warranty Fine-Print & Trial Policy Deconstruction
Calculate proration cliffs, test unweighted sagging ruler thresholds, and verify foundation slat gap compliance before submitting a claim.
Trial, returns and warranty: the fine print
Warranty Proration Cliff & Fine Print Analysis
Mattress warranties advertised as "25-Year" or "Lifetime" typically undergo an actuarial transition into a steep proration cliff after Year 10. Consumer defect claims require rigid straight-edge depth proof and strict foundation compliance.
$1,800
$800$2,000$3,500
Year 12 of 25
Year 1 (New)Year 10 (Cliff Edge)Year 25
Prorated Cliff Active
Saatva Lineal Adjustable Base · Friends for Life Limited Warranty
Customer Out-of-Pocket:
$900.00 (50%)
Manufacturer Coverage: 50% ($900.00)Customer Share: 50% ($900.00)
Proration Schedule Breakdown for Saatva:
- Years 1-10: 100% Non-Prorated. The manufacturer covers 100% of replacement or repair costs ($0 customer copay).
- Years 11-15: Customer pays 50% of the purchase price ($900.00 on a $1800 mattress).
- Years 16-20: Customer pays 75% of the purchase price ($1350.00 on a $1800 mattress).
- Years 21-25: Customer pays 85% of the purchase price ($1530.00 on a $1800 mattress).
- Round-Trip Freight Surcharge: Optional repair in Year 3+ incurs a mandatory $149 processing fee.
Specifications
Recorded specifications
Values and benchmarks recorded for this question.
| Specification | Measured value | Benchmark | Status |
|---|---|---|---|
| Actuator Duty Cycle | 10% (2 min ON / 18 min OFF) | IEC 60601 Medical & Domestic Standard | pass |
| Thermal Cutoff Threshold | 105°C (221°F) Thermistor Trip | Overheat Fire Prevention | pass |
| Cooling Reset Duration | 15 - 30 Minutes Automatic Reset | Self-Healing Thermal Switch | pass |
| Push Force Rating | 4,000 - 6,000 N (900 - 1,350 lbs) | High Lifting Capacity | pass |
Standards reference: Benchmarks derived from ASTM D3574 (flexible cellular foam), CPSC 16 CFR 1633 (open flame flammability), and clinical capillary closing thresholds (32.0 mmHg).
Checklist
Foundation Rigidity & Slat Support Audit
Step-by-step checklist to verify bed frame compliance, slat spacing tolerances, and center support.
- 01
Allow 20-Minute Cool Down
If your adjustable bed stops responding, wait 20 minutes for the motor to cool.
Watch for: DO NOT UNPLUG OR RAPIDLY CYCLE POWER; LET THE THERMAL SWITCH RESET NATURALLY.
- 02
Check for Obstructions
Inspect beneath the frame to ensure no bedding, wires, or storage bins block the scissor arms.
Watch for: Never operate an adjustable base with items wedged in the lifting arms.
- 03
Verify Remote Battery
Check that the remote control batteries are fresh and the pairing light blinks.
Watch for: Avoid continuous button pressing that re-trips thermal sensors.
Sources
Sources for this answer
Read the source documents behind the thresholds, measurements, and policy details used here.
View source
Underwriters Laboratories (UL)
Household and Similar Electrical Appliances - Safety
UL 962 Standard