Grain-systems PNEG-526 User Manual download pdf (Page 31)

MAINTENANCE Tower Dryer Operations & Service

2

8. On Zimmerman Dryers equipped with the

Accutrol sweep unload metering system, check

the discharge area to insure that the area is cleaned

of stalks and old grain. Inspect the sweeps for

excessive wear.

9. On GSI Dryers equipped with the hoppered

metering system, check the hopper area and the

area around the metering drum to insure that they

are cleaned of stalks and old grain. Check the

edges of the metering drum for excessive wear.

10. Important!! The covers to the discharge

sections on both the Zimmerman and GSI Tower

dryers must be in place and clamped down at all

times when the dryer is in operation. If the cover

is off during operation, the vacuum created by the

blowers will suck foreign matter from the

discharge area and deposit it in the heat section of

the dryer plugging the inside screens of the dryer

also creating a fire hazzard.

SEE PRE-SEASON CHECKLIST AT

THE END OF THIS SECTION

PRE-SEASONAL INSPECTION AND

SERVICE

The dryer is made of weather resistant material, and is

designed to require minimum service. However, each

season we recommend the following items be checked

before the unit is used, and any damaged or question-

able parts replaced. These checks will help eliminate

possible failures, and assure dependable operation of

the equipment.

1. Shut off electrical power. Open power box and

control box, and inspect for moisture, rodent dam-

age or accumulated foreign material present. In-

spect and tighten any loose terminal connections.

Replace any damaged or deteriorated wiring.

2. Lubricate the blowers, motors, and metering sys-

tem as outlined in the Lubrication Table below.

3. Check blower belts for proper tension.

4. Inspect and clean the burner. Visually check that

no holes in the stainless steel air mixing plates are

plugged. If burner ports are plugged, clear them

with a piece of wire or a drill bit. After a period of

several years, it may become necessary to drill

out the burner ports to clear away accumulated

rust. Use a #43 drill bit to return burner ports to

their original diameter. (See burner drilling proce-

dure in the Maxon Burner area of the COMPO-

NENT MANUALS section of this book.)

(NOTE: Pre-2002 model dryers require a #47

drill bit.)

5. Check electrical connections at both the flame rod

and spark plug. Clean spark ignitor and flame

rod. Replace if necessary.

6. Check drain valve on gas train to insure that there

is no water in the gas train. Valve should always

be open when the dryer is not being used. Insure

that drain valve is closed prior to dryer operation.

7. Lubricate linkage on gas modulating valve.

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Grain-systems PNEG-526 User Manual Page 31

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