PRE-TRIP SAFETY CHECK A vehicle safety check should be performed daily prior to operaƟon. See PrevenƟve Maintenance SecƟon.
DANGER NEVER open a manhole unless vessel is completely depressized and blow down line valve is open. Even a slight amount of residual pressure can cause the manhole cover to violently fly open when unlatched.
START-UP When units are parked, especially over night, moisture can form inside the tank and piping. To clear out most of the moisture, remove dust cap on dis-charge line, start compressor or blower and pres- surize unit. Then open each of the hopper discharge valves to blow out the unit. This procedure will help prevent the discharge valves and aerators from becoming clogged.
CAUTION Blow down line valve must be OPEN at all Ɵmes, except when unload- ing. This will help prevent residual pressure buildup due to changes in ambient temperature, fricƟon, product expansion, etc..
LOADING The type of cargo being hauled and the loading situaƟon will determine the best method of loading. Heavier materials such as sand and sugar can normally be loaded through the center manhole and allowed to overflow into the adjoining hoppers. Light and bulky products such as flour or plasƟc pel- lets should be loaded through the individual manholes for beƩer distribuƟon. The pneumaƟc loading line, on units so equipped, offers an alternate loading method. 1. Close all valves except the blowdown valve before loading and while in transit. 2. Secure all manhole covers aŌer loading.
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