Hoffman Media EDD-4C 사용자 설명서

  17

20 25 30 35 40

1

2

4

8 10

 

20 25 30 35 40

1

2

4

8 10

 

The OPEN and CLOSE LEDs indicate whether the needle valve is opening or closing. See items 5 
and 11 in Figure 6 on page 13. 

To select the Pre-lube mode, 24 V AC/DC must be applied to the S.B. terminals in the connection 
box (Figure 5). In this mode, the drip rate is automatically set to 2 dpm. 

This mode permits emergency operation in the rare case when there is a suspected failure of the 
main circuitry. 

Select the manual mode by switching the Mode toggle switch to the upper MAN position (Figure 6). 
This mode bypasses the electronic control circuitry, and allows the operator to modify the drip rate 
by using the Open Valve (manual) and Close Valve (manual) push buttons. 

Use the Drip verification peephole (see Figure 7 below) to check the drip rate. 

In this mode, power is removed from the circuitry, except for the push buttons, motor, and Manual 
mode LED.