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Almex T4PGF1 - Maintenance Procedures; Opening the Control Cabinet; Overload and Ground Fault Protection; Temperature Calibration

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T4PGF1 INSTRUCTION MANUAL Page 12
SHAW-ALMEX INDUSTRIES LIMITED June 14 2017
indicator, at this point the controllers should light. When the switch is put in the other position it
generates a red light on the pump indicator. When the plugs are removed a yellow indication will
be on. If this doesn’t occur remove the key and lockout and tag out the unit. Services will be
required.
15. If the control box functions as described push the E-Stop button. This should immediately drop
off the main breaker, earth/ ground indicators and temperature controllers, and leave only the
phase indication lights. If this doesn’t occur remove the key and lockout and tag out the unit.
Services will be required.
16. Turn the reset key and reset the main breaker and all of the controllers and indication lights should
return as before. If this doesn’t occur remove the key and lockout and tag out the unit.
17. Press the Test Button Fault Indicator and again immediately drop off the main breaker, earth/
ground indicators and temperature controllers, and leave only the phase indication lights and Test
Button Fault Indicator light on. If this doesn’t occur remove the key and lockout and tag out
the unit. Services will be required. Repeat for the E-Stop button.
18. The box is now ready to be used for belt repair or splicing control. If any of the above features do
not respond as described remove the key and lockout tag out the unit. Contact your maintenance
department and/or Shaw Almex for repair instructions.
Use the Pre-Inspection check Sheet on page 18 for this check list and documentation for your records.
9. MAINTENANCE
9.1. Opening the Control Cabinet
To access the circuits in the control panel, a + screw driver is required. Unqualified personnel must not open or
work on these units. Any unauthorized work or adjustments immediately VOIDS warranty.
SAFETY: Disconnect The Power Supply.
1. Remove the 8 screws around the perimeter of the face panel and carefully lift the chassis out of the case.
The chassis fits very closely into the mounting frame in the case.
2. All fuses are accessible without separating the top from the bottom of the chassis.
3. The chassis is symmetric so it can be placed into the case with the lid at the top or at the bottom. With the
lid at the top, the case can be positioned on the side and the lid will provide shade to make the controllers
more visible.
9.2. Overload Protection
There is overload, ground leakage and continuity check protection for the control circuits and platens inside the
control cabinet. The system is set to trip at or below 30ma of current leakage within 55ms using its internal
ground / earth fault protection system.
The control circuit is protected with a 60 amp circuit breaker that can be reset. The circuits are protected with
fuses and thermal overload switches. The breaker and fuses are clearly labeled.
The top and bottom component panels must be separated to inspect the circuits. Fuses are easily accessed when
the case is removed.
9.3. Temperature Calibration
After replacing a temperature controller, a platen temperature sensor or a platen heating element, the
temperature controller should be calibrated to achieve the best performance. Failure to calibrate the controller
with the vulcanizer will result in temperature over shoot and the temperature control will be less precise.
Note: The temperature controller is a snap in module that can be replaced with a + screwdriver, and is a
recommended spare part. If you have ordered a spare controller, it will be factory set to an average value that
will control your platen reasonably well. Auto Tune the controller as follows.
An external means of checking the platen temperature is required. A portable temperature test meter with at
least two leads is best to conduct the calibration tests. These may be purchased from Shaw-Almex.

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