B&C Technologies IM Series Industrial Ironer - Manual (Page 78)

13. Temperature High Limit Reset - After the previous step press the High Limit reset button to
verify that it clears the high limit condition.
14. Burner Fault Lamp - At the rear of the machine press the button in the cover of the Riello
Burner. The burner will fault and the button will be illuminated. At the front of the machine
verify that the Burner Fault Lamp illuminates and audible alarm sounds if installed.
15. Burner Remote Fault Reset - at the front of the machine press the Burner fault reset button
to verify that the fault is cleared and operation of the burner is restored.
16. PS2 (High pressure switch) Operation – Slowly Close Valve C in the oil system while the
machine is running and the pump is energized. When the High pressure reading drops just
below 50 PSI the burner should shut down. After the burner shuts down, open Valve C and
verify that the burner operates properly.
17. PS2 High Pressure Switch Setting - Record the setpoint and differential settings indicated
on the face of the pressure switch for deadband and threshold.
18. Normal High Pressure Reading – Record the high pressure gauge reading when the machine
is operated cold (oil below 50 o C). This is the gauge next to the high pressure switch.
19. PS3 (Low Pressure Switch) Operation – Slowly Close Valve B in the oil system while the
machine is running and the pump is energized. When the low pressure reading rises above
the setpoint (typically 20 PSI) the burner should shut down. After the burner shuts down,
open Valve B and verify that the burner operates properly.
20. PS3 Low Pressure Switch Setting - Record the setpoint and differential settings indicated on
the face of the pressure switch for deadband and threshold
21. Normal Low Pressure Reading – Record the low pressure gauge reading when the machine
is operated cold (oil below 50 o C). This is the gauge next to the low pressure switch.
22. High Pressure Gauge reading – Record the high pressure gauge reading when the machine
is operated cold (oil below 50 o C). This is the gauge located in the side panel just downstream
from Valve C.
23. Expansion Tank Valve Handle Switch (Valve A) - make sure the warning hang tag is present
on the valve. Unlock and close the valve the machine should shut down when the valve is
closed. Verify that it will not restart. Open the valve and lock it open verify that the machine
restarts normally.
24. Line Voltage - use a reliable calibrated AC Voltmeter to measure the electrical service voltage
from L1-L2, L2-L3, L1-L3. Do not measure line to ground. The 3 voltage readings should be
within 2%. If an imbalance exists have it corrected immediately. Record the median line
voltage.
25. Main Ground Connection - This is a high leakage current device, hence an excellent ground
connection is critical. Check the screws securing the PE lug to the main panel using a screw-
driver make certain that they are very tight. Using a screwdriver make sure the PE ground
conductor from the service is securely tightened into the PE lug. Check the conductor for
68