Sterlco SDAP 90-225 CFM Series Drying and Conveying Systems - Manual (Page 19)

SDAP Series PD 2 to PD 4 Drying and Conveying Systems Page 19
; Vacuum leaks anywhere in the system reduce system capacity.
; Keep the number of material tube bends to a minimum for maximum system capacity.
; Use long radius tube bends on material lines.
; Keep the total footage of material conveying flex hose to a minimum. Long flex hose
material runs reduce system capacity.
; Support tubing about every ten feet with straps, pipe hangers, or brackets.
; Tube joints must be rigid to prevent vacuum or material leaks.
; Cut tube ends square and chamfer edges smooth. Use a fixed band saw or power miter
saw when making cuts. You can use a tubing cutter on aluminum tubing; for cutting stainless
steel, use a saw with a carbide or diamond-impregnated saw blade. Chamfer stainless steel
edge cuts with a die grinder or a hardened rasp file.
; Clean all tubing after cutting and before assembly. Run a rag dampened in a non-volatile
cleaning solvent through all tubing and couplers to remove sediment from shipping or
cutting. Run a quantity of low-grade material through new lines to remove any remaining
sediment, and discard the material immediately.
; Tube ends must butt together inside couplers.
; Tighten tube coupler nuts from the center outward to create a tight seal and allow proper
contact of the internal grounding strip.
; Each material tubing run must maintain a continuous ground through the tubing and
couplers, from pickup point to vacuum hopper. Ungrounded flexible hoses should have
ground wires wound around the outside.
; If you must cut bends, cut the straight section and allow enough straight length for complete
insertion into a coupler.
; You can attach a quick-change or standard tube coupler to vinyl flex hose by inserting a stub
of hard tube into the hose and securing it with a hose clamp. Make sure that enough tube
extends from the hose to properly install the quick-change or coupler. Apply clear silicone
caulk around adjoining tube seams for exterior bolted couplers.
; If you use stainless flexible material hose, the material flow must be in the same direction as
the arrows on the hose. Material direction is not critical with vinyl flex hose.