Station (ACR4) Setup and Maintenance Initial Setup

Complete Operational Set-Up:

STATION (ACR4) SETUP AND MAINTENANCE INITIAL SETUP

NOTE: Refer to the manufacturer's instructions for all initial setup procedures.

Operational Setup


CAUTION: Always wear goggles and gloves when doing work that involves opening the refrigeration system. If liquid refrigerant comes into contact with the skin or eyes, injury may result.


CAUTION: Use only authorized 23-kg (50 lb.) refillable refrigerant tanks (J 3950050). Using other tanks could cause personal injury and void the warranty.


1. Connect high side (Red) and low side (Blue) hoses to the ACR4 unit (figure 28). Route hoses through hose reel bracket grommets.

CAUTION: Refrigerant-134a systems have special fittings (per SAE specifications) to a void cross-contamination with Refrigerant-12 systems. Do not attempt to adapt this unit to Refrigerant-12 systems. Severe System failure will result.

Control Panel:

CONTROL PANEL FUNCTIONS

The following explains the functions of the various components of the unit's control panel (see accompanying figure).

- Main Power Switch--Supplies electrical power to the control panel.

- Beeper--Emits an audible tone to alert the operator to unit operating functions.


- Digital Display--Shows the time programmed for vacuum and the weight of refrigerant programmed for recharging. Detailed instructions for programming this display are included in "Digital Display Functions" in this section.

- Low Side Manifold Gage--When properly connected to an A/C system, this gage shows the system's low side pressure.

- High side Manifold Gage--When properly connected to an A/C system, this gage shows the system's high side pressure.

- Moisture indicator--Shows if the refrigerant is wet or dry.

- Low Side Valve--Connects the low side of the A/C system to the unit.

- High Side Valve--Connects the high side of the A/C system to the unit.

Keypad Functions:

NOTE: In addition to the number keys, the control panel contains special keys that accomplish specific operating functions (see accompanying figure).

- 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.

- HOLD/CONT.--Interrupts the automatic cycle in the "HOLD" position, and then resumes functions in the "CONT" position. Press this button once for "HOLD," and again for "CONT."

- VACUUM--Activates the vacuum and automatic recycling sequence.

- ENTER--Enters programmed data into the unit's control memory.

Digital Display Functions

- For information regarding the functions of the digital display, refer to the manufacturer's instructions.

MAINTENANCE

- Refer to manufacturer's instructions for all maintenance procedures.