SEAL PRO 44 Service Manual download pdf (Page 28)

Troubleshooting

February 2000

Section 7. Troubleshooting

7-1. Troubleshooting

Problem:

The power LED does not come on, when the nip setting knob has been set to one of the nip settings

(board thicknesses).

Causes:

The power cable has not been plugged in the mains wall outlet.

Solution:

Plug the power cable into the mains outlet.

The processor, containing the software, is not installed.

Solution:

Install the software (see Software Installation, Section 4-5).

The processor, containing the software, is installed the wrong way around.

Solution:

Install the software properly (see Software Installation, Section 4-5).

The (external) mains circuit breaker is tripped.

Solution:

Reset the mains circuit breaker.

The flatcable, coming from the control panel in the right hand side cover, and the PCB, is not

connected.

Solution:

Perform the Cover Disassembly / Reassembly procedure (See Section 4-3).

The mains (micro) switch is defective.

Solution:

Replace the switch. See Section 8-3-2, Assembly Drawings & Exploded

Views, drawing no. 144-180 / 144-182, art. code 961-0007.

Problem:

The heating system LED (middle LED) does not come on, when the nip setting knob has been set to

one of the nip settings (board thicknesses), coming from the ‘off’ position.

Cause:

There is a fault in the controlpanel (if a ‘loose’ control panel works fine).

Solution:

Replace the right hand cover, containing the control panel. Perform the

Cover Disassembly / Reassembly procedure (See Section 4-3).

Problem:

The heating system LED (middle LED) is flashing at a fast rate, instead of being constantly lit.

Cause:

The temperature sensor wires are not connected properly.

Solution:

Check the wires of the sensor.

Problem:

The heating system LED (middle LED) is flashing at a slow rate, instead of being constantly lit.

Cause:

The temperature sensor wires are short-circuited.

Solution:

Check the wires, and replace the sensor if necessary. See Section 8-3-2,

Assembly Drawings & Exploded Views, drawing no. 144-184 / 144-186, art.

code 144-137 / 144-143.

Problem:

The temperature-ready LED keeps on flashing at a slow rate (after 20 minutes), once the heating has

been activated.

Causes:

The heating element is defective, or one of its connectors had not been installed.

Solution:

Check by performing the Heating Element assembly / reassembly procedure

(see Section 4-4).

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SEAL PRO 44 Service Manual Page 28

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