Lahti Precision Wb900 Kayttoohje Best

| Error Display | Cause | Best Fix | |---------------|-------|----------| | Err 1 | Shaft rotation too slow | Check belt tension inside the machine. Clean shaft bearings. | | Err 3 | No distance/diameter data entered | Enter A, D, and W values before spin. | | Err 7 | Unstable spin (tyre too heavy for speed) | Use "Truck" mode if available. Reduce spin speed via settings. | | No display | Fuse blown or power issue | Check glass fuse behind power inlet. Replace with 250V 2A slow-blow. | | Consistent 10g offset | Contaminated sensor (load cell) | Clean the sensor area under the shaft with compressed air. Never use water. |

If the machine calls for a 45g weight but you only have 5g and 10g pieces:

Following this sequence ensures the best load stability and film economy. lahti precision wb900 kayttoohje best

Step 1: Load Preparation Place the pallet directly in the center of the turntable. An off-center load will cause the mast to vibrate and break the chain over time.

Step 2: Film Loading (Kalvon Asennus) The WB900 uses a unique "split-roller" prestretch. | Error Display | Cause | Best Fix

Step 3: Parameter Selection Press P, then 1 through 9.

Step 4: Initiate Wrap Press Start. The table spins. If the machine calls for a 45g weight

Step 5: Auto-Cut & Clamp (if equipped) At cycle end, wait for the "CLAMP" light. Never manually break the film tail; use the hot wire or tear blade.

The Lahti Precision interface uses a logical menu structure. According to the Käyttöohje:

| Button/Function | Action | | :--- | :--- | | F1 – Setup | Select measurement units (g·mm / oz·in), sensitivity, and rotor type (rigid/flexible). | | F2 – Calibration | Runs the calibration routine using a known trial weight. | | F3 – Measure | Starts the spin cycle and displays unbalance vectors (Angle + Amount). | | F4 – Split | Converts unbalance from two-plane to single-plane if geometry allows. |