Dwyer DV - Manual (Page 2)

INSTALLATION
Figures 1 & 2 show typical installations of the drain valve. It is
recommended that the motorized drive be removed from the valve
before piping the valve into your system. Then reinstall the motorized
drive unit to the valve. This can be done using the four screws holding
the valve to the case.
Install the automatic drain valve to the compressed air system at a point
where moisture would tend to collect. Pipe the opposite end of the valve
to your discharge area.
Note: This unit may be mounted in any position with the flow in either
direction. For air receiver applications, (fig. 1) it is recommended copper
tubing be used for all connection of the pressure side of the valve. For
drop leg applications, (fig. 2) install ridged tubing or pipe from the valve
to the lowest practical point of your system.
©Copyright 2014 Dwyer Instruments, Inc. Printed in U.S.A. 5/14 FR# RV-443450-00 Rev. 2
TROUBLESHOOTING CHART
SYMPTOM
Valve does not cycle
Ball valve leaks at
discharge side
Unit cycles but does
not discharge water
and/or air
Valve discharges
mostly air each cycle
Valve discharges all
liquid each cycle
POSSIBLE CAUSE
Proper power is not
reaching unit
Timer set improperly
Excessive seat
damage from debris
No pressure
upstream
Valve or line clogged
with debris
Timer set improperly
Timer set improperly
CORRECTIVE ACTION
Check that power cord is
plugged into the proper
power source. Check
power source. Push test
button. Reset timer.
Push test button to flush
valve. Replace ball
valve.
Check that Pneumatic
system is pressurized.
Disconnect power.
Depressurize pneumatic
system. Remove drain
valve and check for
blockage in the valve
and the line.
Reset timer to longer
intervals
Reset timer to shorter
intervals
WARNING: Always disconnect power source before working on this unit.
Failure to do so could result in personal injury. The valve is under
pressure. Discharge of compressed gas or fluids will occur during any
cycling of the ball valve when unit is installed in the piping system. Eye
protection is recommended.
OPERATION
Plug the cord set into a proper power source. Set the dial at the desired
frequency of operation. The valve will cycle and the timing sequence will
begin. To change the timing sequence, simply change the code setting
and the timer will reset. The test button may be used to cycle the unit at
any time.
MAINTENANCE
Periodic maintenance is recommended to ensure long, dependable
service from your drain valve. Check power cord for breaks in the outer
jacket or damage to the plug. The case should be kept clean so that label
instructions are legible. The ball valve should be checked for leakage at
the downstream side. The Series DV is not field serviceable and should
be returned if repair is needed (field repair should not be attempted and
may void warranty). Be sure to include a brief description of the problem
plus any relevant application notes. Contact customer service to receive
a return goods authorization number before shipping.
Fig. 1 Fig. 2
W.E. ANDERSON DIV.,
Phone: 219/879-8000 www.dwyer-inst.com
DWYER INSTRUMENTS, INC.
Fax: 219/872-9057 e-mail: [email protected]
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46360 U.S.A.