Installation
6
3A3169E
Low Level Models Only
DIN Connector
Connection is made to PINS 1 and 3 of the DIN Field
Wireable Connector. See F
. 3. See Technical Data,
page 31 for electrical ratings.
Recommended Protection
DC Voltage
- A 1N4004 diode (or equivalent) connected
cathode-to-positive, shown in F
. 4, is recommended.
AC Voltage
- A resistor and capacitor (high impedance
60 hertz) connected in parallel with the switch, as shown
in F
. 5, is recommended.
Switch Ratings
Air and Fluid Line Accessories
Install the air line accessories in the order shown in F
Bleed-type master air valve (F):
required in your sys-
tem to relieve air trapped between it and the pump.
Air line filter (B1):
removes harmful dirt and moisture
from compressed air supply.
Pump air regulator (B2):
to control pump speed and
outlet pressure. Locate it close to the pump.
F
IG
. 3
NOTICE
Connecting the low level switch directly to the load
may weld the contacts or erode the contact surface,
resulting in a shorter switch life.
F
IG
. 4
F
IG
. 5
Volts
Amps
30
0.3
120
0.13
240
0.06
Trapped air can cause the pump to cycle unexpect-
edly, which could result in serious injury from splash-
ing or moving parts.
