Conveyor Maintenance & Trouble Shooting Guide

1.5 Inch and 2.5 Inch Pitch Steel Belt Conveyors


Maintenance Chart

 On a monthly basis check the following:

Item to Check

Correct Adjustment

Conveyor Belt Tension – Hinged Steel Belt

Using hands pushing upward, 1/8 inch to 1/2 inch slack under headshaft at discharge

Conveyor Belt Centered

Tighten take-up bolt on side which belt is riding nearest or loosen opposite side as required to center belt and achieve proper belt tension

Drive Chain Tension & Alignment

Tension: 1/8” deflection per foot of span

Alignment: 1/16” per foot of span

Grease Bearings (Located on headshaft and tailshaft)

Fill until small bead comes from seal

See Chart Number 1

Ratchet Clutch Adjustment, if equipped

Compressed length of spring to measure 1 5/8”

Be sure to loosen set screw for adjustment and re tighten upon completion.

Oil in Gear Reducer, if equipped

See Chart Number 2 Change Oil after the first 250 hrs. Then every 6 months or 2500 hrs of operation

Troubleshooting

Problem

Possible Cause

Solution

Clutch Ratcheting or slipping

Drive chain assembly misalignment or tensioned incorrectly

Refer to tension and alignment in Maintenance Chart

 

Excessive or Accumulated Load

Avoid load buildup by running conveyor continuously.  Do not manually surge load conveyor

 

Carry-Back of Material into Conveyor

Replace filled receptacle as required

 

Improper ratchet clutch tensioning

Refer to ratchet clutch adjustment in Maintenance Chart

 

Damaged or missing chain assembly parts

Review belt and repair or replace as required

 

Accumulation of conveyed material or foreign objects inside of casing

Reverse conveyor placing ball of newspaper or a rag on belt to act as wipeout for accumulated material

Excessive Wear on Casing

Conveyor not level

Level conveyor

 

Belt misalignment or tensioned incorrectly

Refer to conveyor belt tensioning and alignment in Maintenance Chart

Excessive Wear/Damage to Belting

Belt misalignment or tensioned incorrectly

Refer to conveyor belt tensioning and alignment in Maintenance Chart

 

Accumulation of conveyed material or foreign objects inside of casing

Reverse conveyor placing ball of newspaper on belt to act as wipeout for accumulated material

 

Foreign object dropped on conveyor belt

Replaced damaged portion of belting

Motor overloads/overheats

Ratchet clutch not set properly

Refer to ratchet clutch adjustment in Maintenance Chart

 

Chart 1

Grease Bearings as Required (Chart from Service Manual):

CONDITIONS

SPEED

TEMPERATURE OF OPERATING ENVIRONMENT

CLEANLINESS OF OPERATING ENVIRONMENT

GREASING INTERVAL

100 RPM

Up to 120 ° F

Clean

6 to 12 Months

500 RPM

Up to 150 ° F

Clean

2 to 6 Months

1000 RPM

Up to 210 ° F

Clean

2 Weeks to 2 Months

1500 RPM

Over 210 ° F

Clean

Weekly

Any Speed

Up to 150 ° F

Dirty

1 Week to 1 Month

Any Speed

Over 150 ° F

Dirty

Daily to 2 weeks

Any Speed

Any Temp

Very Dirty

Daily to 2 weeks

Any Speed

Any Temp

Extreme Conditions

Daily to 2 weeks

Chart 2

 Boston Gear brand gear reducer replacement oil is recommended as follows:

Ambient Temperature

Recommended Oil

-30 ° to 225 ° F

Mobil SHC 634 Synthetic

40° to 90 ° F

Mobil 600W Cylinder Oil

80° to 125° F

Mobil Extra Hecla Super Cylinder Oil

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