What is what
Diagram 4.
1.2.
Control box
The control system consists of two switches:
1. On/Off swich.
Turns machine off in OFF position and on in ON posi- tion.
2. Fwd/Rev switch.
Changes direction of vacuum pump. Sometimes direc- tion of vacuum will need to be reversed depending on phase order of power supply.
10- English
IMPORTANT!
Direction should NEVER be changed while machine is switched to ON position (this is why there is a lock on the FWD/REV switch). If direction needs to be changed, turn ma- chine back to OFF position, wait for 1 minute, change direction and then switch back on. Once direction setting has been changed, remove key from FWD/REV switch before switching back on.
Changing of direction while machine is run- ning will result in motor failure.
