Maintenance; Belt Tracking; Troubleshooting - HYTROL HSS Manual De Instalación Y Mantenimiento

MAINTENANCE

•Belt Tracking

HOW IS THE CONVEYOR BELT TRACKED
The belt is tracking by adjusting: Drive Pulley, Tail Pulley, Return Idlers, and
Snub Idlers. The same tracking principles apply to conveyors supplied with
end drives, center drives, or underside take-ups.
PRE-TRACKING INSPECTION
Before attempting to physically track the belt:
1. Make sure conveyor is level across the width and length of unit. Adjust
supports as necessary.
2. Check to make sure: Drive Pulley, Tail Pulley, Snub Idlers, and all Return
Idlers are square with conveyor bed.
3. Make sure belt has been properly threaded through conveyor.
4. Make sure belt lacing has been installed correctly and is square with the
belt.
5. Check for improper loading. Feed should be in direction of belt travel,
centered on belt.
IMPORTANT: When belt tracking adjustments are made, they should be
minor (1/16 in. at a time on idlers, etc., should be sufficient.).
Give the belt adequate time to react to the adjustments. It may take several
complete revolutions around the conveyor for the belt to begin tracking
properly on long, slow conveyor lines.
A) Stand at tail pulley looking toward drive and note what direction belt is
traveling.
B) Having observed belt and determined tracking problem, follow procedures
in "How to Steer The Belt", See Figure 7C.
HOW TO STEER THE BELT
Condition 1. . .When the belt is running in the direction (FLOW) with the
arrow, but tracking (drifting) towards Side "X", move the Snub Idler nearest
the INFEED end of Side "Y" towards the DISCHARGE end of the conveyor.
Condition 2. . . When the belt is running in the direction (FLOW) with the
arrow, but tracking (drifting) towards Side "Y", move the Snub Idler nearest
the INFEED end of Side "X" towards the DISCHARGE end of the conveyor.
If Belt Direction (FLOW) is reversed, all the above conditions will remain the
same as in Figure 7C, except you are now viewing the conveyor from the
opposite end.
If belt continues to track improperly, re-check all items covered in "Pre-
Tracking Inspection" and make corrections as necessary.

• Troubleshooting

TROUBLESHOOTING DRIVES
TROUBLE
Conveyor will not start or 1) Motor is overloaded.
motor quits frequently. 2) Motor is drawing too much current.
Loud popping or 1) Defective bearing.
grinding noise. 2) Loose set screws in bearing.
Motor or reducer 1) Conveyor is overloaded.
overheating. 2) Low voltage to motor.
3) Low lubricant level in reducer.
TROUBLESHOOTING DRIVE BELT TRACKING
TROUBLE
Belt slips or won't move, 1) Conveyor is overloaded.
but drive runs. 2) Belt is too loose.
FIGURE 8A
FIGURE 8B
CAUSE
CAUSE
8
NOTE: In all conditions, you are viewing the Conveyor Belt, from the INFEED
end. All corrections will be made from the INFEED end of conveyor.
NOTE: Do NOT use Tail, Take-Up or Drive Pulley/Rollers to track belt. Only
use snub or idler pulley/roller to track belt. Tracking belt using Tail, Take-Up
or Drive Pulley/Roller will result in damage to belt, bearings or Pulley/Roller.
DRIVE PULLEY
(POLEA MOTRIZ)
A
TAKE-UP
(COMPENSACIÓN)
DRIVE PULLEY
(POLEA MOTRIZ)
A
TAKE-UP
(COMPENSACIÓN )
SOLUTION
1) Check for overloading of conveyor.
2) Check heater or circuit breaker and change if necessary
1) Replace bearing.
2) Tighten set screw.
1) Check capacity of conveyor and reduce load to recommended level.
2) Have electrician check and correct as necessary.
3) Relubricate per manufacturer's recommendations. For HYTROL
reducer, refer to separate manual.
SOLUTION
1) Check capability of conveyor and reduce load to recommended level.
2) Loosen Take-Up slightly. Keep pulley square in frame.
4" DIA
TAKE-UP ROLLER
(RODILLO DE COMPENSACIÓN
DE 4 PULG.
ROL-02
DE DIÁMETRO)
4" DIA
TAKE-UP ROLLER
(RODILLO DE COMPENSACIÓN
DE 4 PULG. DE DIÁMETRO)
ROL-02
TAIL ROLLER
(RODILLO DE
RETORNO)