B&C Technologies IM Series Industrial Ironer - Manual (Page 79)

oxidation. If the conductor is heavily oxidized, remove it, clean it, and replace using oxgard
paste to prevent future oxidation in the connection. Verify that there is no paint between the
lug and the panel.
26. Pump Current – While the machine is running and the oil pump is on with the oil at a
temperature lower than 50 o C, use a calibrated reliable AC Current clamp meter to measure
the operating current in each conductor to the motor. Measurement should be made in the 3
conductors after contactor K5M labeled U5, V5, and W5. The 3 readings should be within 2A
of each other if an imbalance exists have it corrected. Record the average of the 3 readings
on the sheet.
27. Roll 1 Vacuum Current - While the machine is running and the roll vacuum switch turned
on, use a calibrated reliable AC Current clamp meter to measure the operating current in each
conductor to the motor. Measurement should be made in the 3 conductors after contactor
K2M labeled U3, V3, W3. The 3 readings should be within 1A of each other if an imbalance
exists have it corrected. Record the average of the 3 readings on the sheet.
28. Roll 2 Vacuum Current - While the machine is running and the roll vacuum switch turned
on, use a calibrated reliable AC Current clamp meter to measure the operating current in each
conductor to the motor. Measurement should be made in the 3 conductors after contactor
K3M labeled U4, V4, W4. The 3 readings should be within 1A of each other if an imbalance
exists have it corrected. Record the average of the 3 readings on the sheet.
29. Roll Drive Current - With the machine a temperature lower than 50C, set the speed reference
switch to ”internal” or ”pot” position. Lower the rolls and increase the speed slowly using
the potentiometer on the panel to a stable reading of 100fpm or 30.5mpm. Read the roll drive
current from the display on the inverter and record it in the log sheet.
30. Control Primary Current – While the machine is running and the roll vacuum switch turned
on, use a calibrated reliable AC Current clamp meter to measure the operating current at the
primary side of the control transformer at RT or ST and record it in the log sheet.
31. Control 24V Secondary Current – While the machine is running and the roll vacuum switch
turned on, use a calibrated reliable AC Current clamp meter to measure the operating current
at the 24V ACH side of the control transformer in the conductor labeled ”24VACL” and
record it in the log sheet.
32. Control 120V Secondary Current – While the machine is running and the roll vacuum switch
turned on, use a calibrated reliable AC Current clamp meter to measure the operating current
at the 120V ACH side of the control transformer in the conductor labeled ”120VACL” and
record it in the log sheet.
33. Gas Pressure No Load - Read the gas pressure on the gauge at the front of the machine when
the burner if off. Verify the reading with a manometer if possible and record the pressure in
the log sheet.
34. Gas Pressure High Fire - Read the gas pressure on the gauge at the front of the machine
when the burner operating at high fire. Verify the reading with a manometer if possible and
record the pressure in the log sheet.
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