Troubleshooting & Repair, Return | Lincoln Electric SVM136-A

to Section TOC

to Master TOC

F-33

TROUBLESHOOTING & REPAIR

1.INPUT SUPPLY LINE

2.INPUT CONTACTOR CR1

3.RECONNECT PANEL

Return

CLEANING PROCEDURE

1.Remove the main input supply power to the machine and remove the input access panel.

2.Locate and get access to the input contac- tor (CR1) in the input box. See Figure F.17.

3.Remove the input contactor cover plate using a phillips head screwdriver.

CONTACTOR REPLACEMENT PROCEDURE

1.Disconnect main input supply power to the machine.

2.Locate and get access to the input contac- tor (CR1) in the input box. See Figure F.17.

3.Disconnect the main input supply power leads L1, L2, and L3 to the input contactor.

Return to Section TOC

Return to Master TOC

WARNING		Remove the control transformer primary
Do not apply input power to		leads H1, H2 or H3 (dependent on input volt-
Do not apply input power to		age) from L1 and L3 terminals on the input
the machine with the input		side of the contactor.

contactor cover plate re-	4.	Using the 7/16” socket wrench, disconnect
moved.	4.	Using the 7/16” socket wrench, disconnect
moved.		the output leads T1, T2, and T3 from the
		the output leads T1, T2, and T3 from the
		input contactor. (Label the leads.)
	5.	Identify and label the leads connected to the
4. Blow out any dirt or dust in or around the		input contactor coil.	See the Wiring
4. Blow out any dirt or dust in or around the		Diagram.
contacts with a low pressure air stream.		Diagram.
contacts with a low pressure air stream.
5. Inspect the contacts for signs of excessive	6.	Disconnect the leads from the input contac-
5. Inspect the contacts for signs of excessive		tor coil (leads X1, #232 and #233). See the
wear, pitting, or contacts fused (stuck)		tor coil (leads X1, #232 and #233). See the
wear, pitting, or contacts fused (stuck)		Wiring Diagram.
together.		Wiring Diagram.
together.
a. If any of these conditions are present,	7.	Remove the three self-tapping mounting
a. If any of these conditions are present,		screws using a 5/16” socket wrench. See
replace the input contactor assembly.		screws using a 5/16” socket wrench. See
replace the input contactor assembly.		Figure F.17.
6. Replace the input contactor cover plate.		Figure F.17.
6. Replace the input contactor cover plate.	8.	Remove the input contactor.
	8.	Remove the input contactor.
	9.	Insert the replacement input contactor and

install it following the procedures in reverse order.

NOTE: Be sure to reconnect all leads correctly.

IDEALARC CV-400