Wilkerson E12 - Manual (Page 2)

E08 and E12 Slow-Start / Quick Dump Valve 83-964-000
Function
The Slow-Start / Quick Dump valve is a 3-Port valve which supplies
air in a controlled reliable manner to pneumatic systems and has
the quick exhaust features of a dump valve. This valve replaces
conventional main valves.
The Slow-Start / Quick Dump valve operates much like a standard
3-Way valve. When the valve is installed Port 2 is connected to
Port 3 (downstream system is exhausted to atmosphere). When a
signal (pneumatic or electric depending upon pilot operator) is
received in Port 12, the connection between Port 2 and 3 is closed.
At the same time, supply air from Port 1 is connected to Port 2
through the adjustable throttle (Flow Control Screw). When the
downstream pressure reaches a specific point, the main poppet
opens and permits full air flow through the valve. The table shows
the relationship between the inlet pressure and the downstream
pressure at which the main valve opens.
When the pilot signal is removed, the valve returns to its
initial position and the downstream air is dumped rapidly through
Port 3.
Installation
The Slow-Start / Quick Dump valve
replaces an ordinary main valve;
therefore, it is usually mounted
between the air preparation unit
and the system. The Slow-Start /
Quick Dump valve is specifically
designed to mount directly in line
with the Series using modular
body connectors.
Port Connections
1. Connect inlet air supply to Port 1.
2. Connect mufflers (or plumb exhaust) from Port 3.
3. Connect cylinder Port 2 to cylinder or other system devices to be
supplied air.
4. Signal Connection – Slow-Start / Quick Dump valves may be
remotely controlled electrically or pneumatically.
a. For solenoid pilot operated valves, see the instructions under
“WIRING INSTRUCTIONS.”
b. For air pilot operated valves, connect the air line to the pilot
port 12, (M5 or 4mm tube).
Wiring Instructions
CAUTION: An interruption of 10 milliseconds or greater to
the power supplied to the solenoid of a solenoid operated
valve may cause the valve to shift. Provision must be
made to prevent power interruption of this duration to
avoid unintended, potentially hazardous, consequences.
NOTE: In addition to the following instructions, follow all requirements
for local and national electrical codes.
Attach an electrical cable with connector (that conforms to the DIN
43650, Form C pattern) to the terminals of the solenoid. For
locations in a cabinet or other protected environment, the Snap-
On connector with loose wires may be attached. In both cases,
do not attach or remove the connectors until power is off.
Electrical Connection
Valves with 3-Pin male terminals should have power connected to
the parallel terminals. Ground should be connected to the
perpendicular terminal. Use only connectors that comply with DIN
43650, Form C (8mm blade spacing).
Override Operation
The flush non-locking manual override is located on the body of
the solenoid pilot. To operate the override, place a small screwdriver
in the slot of the override and turn approximately 45° in either
direction until the solenoid pilot actuates. The solenoid pilot will
remain actuated until the override is released. When released,
the solenoid pilot de-actuates.
Solenoid Replacement
To replace the solenoid, remove the two mounting screws and replace
with the correct voltage solenoid. Tighten new screws 5 to 6 in.lbs.
Voltage Coil No. Voltage Coil No.
12/60 P025422B40 24VDC P025422B49
24/60 P025422B42 120/60 P025422B53
12VDC P025422B45 240/60 P025422B57
Accessories
Kit No. Description
GPA-96-310 05 Series Modular Body Connectors
GPA-96-738 08 Joiner Set
VRP-96-780 3/8" Exhaust Muffler
VRP-96-306 Snap on Connector Kit with 0.5 meter wires
VRP-96-301 3-Pin Connector Kit - Unlighted
VRP-96-302 3-Pin Connector Kit - Lighted, 24VAC & DC
VRP-96-303 3-Pin Connector Kit - Lighted, 120VAC
VRP-96-300 3-Pin Connector Kit - Unlighted w/2 meter cord
VRP-96-304 3-Pin Connector Kit - Lighted, 24VAC & DC
w/2 meter cord
VRP-96-305 3-Pin Connector Kit - Lighted, 120VAC
w/2 meter cord
!
3
1 2
3
1 2
E12
A
D
B
C
D
D
OUT IN
EXH
E08
Adjustment
Needle
Screwdriver
Slot
M5 Port
Thread
(Air Pilot)
Prestolok
Fitting for
4mm Dia. Tube
(Air Pilot)
A
D
B
C
D
D
OUT IN
EXH
Adjustment
Needle
Screwdriver
Slot
M5 Port
Thread
(Air Pilot)
Prestolok
Fitting for
4mm Dia. Tube
(Air Pilot)
Inlet Downstream
Pressure Pressure for
Full Flow
75 psig 50 psig
100 psig 55 psig
125 psig 60 psig
150 psig 65 psig
Dimensions:
Model
Port Exhaust
A B C D
Size Port
E08 1/4" 3/8"
2.09" 3.53" 1.42" 1.65"
53mm 90mm 36mm 42mm
E12 3/8" 3/8"
2.13" 3.53" 1.42" 1.65"
54mm 90mm 36mm 42mm