FM3700 Commercial Recovery Machine
The FM3700 is designed for use in commercial refrigerant recovery applications. The 3700’s industrial strength, one horsepower, twin piston compressor enables the unit to recover refrigerant vapor at up to 4 pounds per minute and liquid up to 8 pounds per minute, directly through the compressor.
FM 3700-S with 80% Shut-Off With oil-less reciprocating dual-head compressor, 115/1/60 supply voltage (not for export), self purge, vacuum shut-off, 450 PSI high pressure limit and 1-hp power rating. Unit weight: 47-lbs (21.32 Kg).
The FM3700 is designed for use in commercial refrigerant recovery applications. The 3700's industrial strength, one horsepower, twin piston compressor enables the unit to recover refrigerant vapor at up to 4 pounds per minute and liquid up to 8 pounds per minute, directly through the compressor
Location and Description of Unit Features
![Bacharach_FM3700_Manual1-003]()
| 1. Purge Ball Valve |
This valve determines what function the Model 3700 performs. This valve points UP during recovery operations and DOWN for purging and liquid push-pull operations. |
| 2. Inlet Port Ball Valve |
Opens or closes the inlet port. It is pointing UP (open) for all recovery operations and points DOWN for purging operations. |
| 3 LED Status Display |
Displays the status of the machine. |
| 4 System Switch |
When in the ON position, this switch starts the recovery operation by turning the compressor on. |
| 5. Outlet Port Ball Valve |
Opens or closes the outlet port. It points DOWN when it is open and to the LEFT when closed. |
| 6 Inlet Port |
Refrigerant hose connection for incoming refrigerant vapors. |
| 7 Outlet Port |
Refrigerant hose connection for outgoing refrigerant. |
| 8. Outlet Pressure Gauge |
Displays the outlet/discharge pressure. |
| 9. Inlet Pressure Gauge |
Displays the inlet/suction pressure of the system being evacuated. |
| Automatic 80% Tank Full Shutoff Cord - Optional Accessory (Not shown) |
This optional accessory connects to the recovery cylinder overfill sensor and automatically shuts the unit off when the recovery cylinder reaches the 80% liquid fill limit. NOTE: If the Model 3700 is equipped with the Automatic 80% Tank Shutoff Option, it will not work unless connected to a DOT recovery cylinder with a compatible level float switch. If the recovery cylinder does not have a float switch, a shorting cap must be installed in order to operate the system. |
| Compressor Circuit Breaker(not shown) |
Protects |