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Download 090.040-M Quantum HD Compressor Control Maintenance
Transcript
QUANTUM™ HD COMPRESSOR CONTROL PANEL MAINTENANCE In order to properly measure the DC power system, it must be checked at the DC power terminal strip. Ensure that the meter is set to the proper range (DC, 0-50 V or equivalent), as well as observing proper wire polarity. The acceptable range for each supply is as follows: • 5 Volt Supply (+5.10 to +5.20 Vdc) • 12 Volt Supply (+12.10 to +12.20 Vdc) • 24 Volt Supply (+24.2 to +24.50 Vdc) ADJUSTMENT If any of the voltages shown above are out of the acceptable range(s) shown, adjustment is required. Locate which of the supplies require adjustment. The adjustment access hole for each supply is located on the lower left of the front of the supplies. If an adjustment is required, use a small insulated Philips screwdriver, insert the tip into the access hole for the appropriate voltage potentiometer (refer to the following diagram for adjustment location). 090.040-M (JUNE 14) Page 23 +5 VDC ADJUSTMENT Locate the DC power terminal strip. Terminal 1001 is the +5 VDC, and 1000 is common (COM).Place the negative lead on 1000, and the positive lead on 1001. Verify that the DVM is displaying in the range of +5.10 to +5.20. If adjustment is required, locate the adjustment access hole on the +5 VDC supply, as previously shown. While watching the DVM, slowly rotate the screwdriver blade clockwise to increase the voltage or counter-clockwise to decrease until the voltage is correctly adjusted. +12 VDC ADJUSTMENT Locate the DC power terminal strip. Terminal 1002 is the +12 VDC, and 1000 is common (COM). Place the negative lead on 1000, and the positive lead on 1002. Verify that the DVM is displaying in the range of +12.10 to +12.20. If adjustment is required, locate the adjustment access hole on the +12 VDC supply, as previously shown. While watching the DVM, slowly rotate the screwdriver blade clockwise to increase the voltage or counter-clockwise to decrease until the voltage is correctly adjusted. +24 VDC ADJUSTMENT Locate the DC power terminal strip. Terminal 1004 is the +24 VDC, and 1000 is common (COM). Place the negative lead on 1000, and the positive lead on 1004. Verify that the DVM is displaying in the range of +24.20 to +24.50. If adjustment is required, locate the adjustment access hole on the +24 VDC supply, as previously shown. While watching the DVM, slowly rotate the screwdriver blade clockwise to increase the voltage or counter-clockwise to decrease until the voltage is correctly adjusted. DC Voltage Adjust DC POWER SUPPLY REPLACEMENT 120 VAC or 240 VAC 090.040-LD0004.eps Figure 10.Power Supply Adjustment NOTICE Extreme care must be used when adjusting the potentiometer. Adjustment should only be performed by qualified personnel. The use of a non-conductive device is recommended. If any of the power supplies are found to be bad, or not capable of acceptable adjustment, the failing supply will need replacing. Refer to the Recommended Spare Parts list for the appropriate part number.
