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<strong>Operating</strong> Guidelines KEYPAD FUNCTIONS In addition to the number keys, the keypad contains special keys that accomplish specific operating functions. • RECYCLE—Activates the recycling sequence. • RECOVER—Activates the recovery sequence. • SHIFT/RESET—Activates “shifted” positions of keys on the keypad and resets the program mode. • FILTER—Automatically recovers and evacuates to 17 in. Hg from the filter and low side of the unit. • CHG—Automatically charges the A/C system with the programmed amount of refrigerant. INST0019 Diagram of Keypad • HOLD/CONT—Interrupts the automatic cycle (HOLD), then resumes functions (CONT). Press once for HOLD, and again for CONT (continue). • VACUUM—Activates the vacuum and automatic recycling sequence. • ENTER—Enters programmed data into the unit’s memory. USING THE DIGITAL DISPLAY This section explains the messages shown on the digital display, which is illustrated here for your convenience. A C B D Diagram of Digital Display Series 17700A/17701A/34700/34701/34704 Enviro-Charge Units 11
<strong>Operating</strong> Guidelines Segment A — Indicates in which mode the unit is operating: PROGRAM — The unit is in the programming mode, which allows you to program vacuum time and refrigerant weight or to review the existing program. HOLD — This mode is used to change a refrigerant tank or to interrupt the vacuum/charging/recovery cycles. AUTOMATIC — Indicates that the unit is running in a given cycle and will automatically stop when the cycle is complete. Segment B — Indicates that the unit is either evacuating the A/C system or recovering, recycling or recharging refrigerant or that the unit is ready to be programmed for one of these functions: VACUUM • With PROGRAM, indicates that the unit is ready to be programmed for vacuum. • With AUTOMATIC, indicates that the vacuum pump is running; the number displayed counts down in minutes and seconds, showing the amount of time remaining. • With HOLD, indicates that HOLD/CONT was pressed to interrupt the vacuum cycle. RECYCLE • With AUTOMATIC, indicates the unit is recycling refrigerant from the tank. CHARGE • With PROGRAM, indicates that the unit is ready to be programmed for the amount of refrigerant to be charged into the A/C system; on the keypad enter the charge in pounds and hundredths of a pound or kilograms, depending on the measurement mode selected. • With AUTOMATIC, indicates the unit is charging refrigerant into the A/C system; the number shown on the digital display counts down, showing the remaining amount of refrigerant to be dispensed. • With HOLD, indicates that HOLD/CONT was pressed to interrupt the charging cycle; the number shown on the digital display is the amount of refrigerant remaining to be charged into the A/C system; to continue charging, press HOLD/CONT again. 12 © 1998 Robinair, SPX Corporation
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Page 3 and 4: CONVERSION TABLE OZ. LBS. 0.5 0.03
Page 5 and 6: Introduction This manual contains i
Page 7 and 8: Set Up Instructions Low Side Gauge
Page 9 and 10: Set Up Instructions 9. While the pu
Page 11 and 12: Set Up Instructions IMPORTANT! The
Page 13: Operating Guidelines USING THE CONT
Page 17 and 18: Overview This overview is designed
Page 19 and 20: Operating Instructions OPERATING TI
Page 21 and 22: Operating Instructions IMPORTANT! R
Page 23 and 24: Operating Instructions CAUTION! Dra
Page 25 and 26: Operating Instructions Option A You
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Page 29 and 30: Operating Instructions CORRECTING A
Page 31 and 32: Maintenance Instructions CALIBRATIN
Page 33 and 34: Maintenance Instructions UL CIRUIT
Page 35 and 36: Maintenance Instructions Filter- Dr
Page 37 and 38: Maintenance Instructions Diagram of
Page 39 and 40: Troubleshooting Tips RECOVERY OPERA
Page 41 and 42: Troubleshooting Tips ERROR/MESSAGE
Page 43 and 44: Replacement Parts List Series Serie
Page 45 and 46: Wiring Diagram J4 1 2 3 4 5 6 J3 1

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