WTE21 and WTE21-1 which are at the end of this manual. 1. Electrically isolate the conveyor. 2. Lift the conveyor belt so that clear access is gained to idlers OPERATION MANUAL. Conveyor Scales Model: WY10, WY10HD, WY15, WY20, WY25, HY15, HY25. Weight Processor WP20 (Tecweigh 20) Weight Processor To have your Tecweigh unit repaired/tested call 1-(336)-969-0110 Tecweigh - tecweigh · Tecweigh - Tecweigh · Tecweigh - tecweigh wp20 manual HI-3010 Installation & Service Manual · MS20 Rate Controler · S5A Volumetric Feeder · Volumetric Feeders · Weigh Belt Feeder · WP20 Scale Processor Tecweigh's Model WP20 processor offers a basic electronic control to measure and totalize the flow of material across a single belt scale or weigh belt.