Van Air Systems Sentinel MDV400I Guide

PAGE 1
OCTOBER 2011
P/N 432-10036-D
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
SENTINEL®
MOTORIZED BALL VALVE WITH ADJUSTABLE CYCLE TIME
Model MDV400I
WARNINGS
DO NOT REMOVE OR REPLACE ANY PART OF THE PRODUCT WHILE IT IS UNDER PRESSURE. SERIOUS PER-
SONAL INJURY AND/OR DAMAGE TO THE PRODUCT MAY RESULT.
DO NOT OPERATE THE PRODUCT IF THEREARE ANY PRESSURE LEAKS. IFA LEAK IS PRESENT, THE PRODUCT
MAY BE UNSAFE TO OPERATE. REMOVE THE PRODUCT FROM SERVICE IMMEDIATELY.
DO NOT OPERATE THIS PRODUCT ABOVE ITS MAXIMUM OPERATING PRESSURE AND/OR TEMPERATURE.
WHEN INSTALLING THIS PRODUCT, BE SURE TO COMPLY WITH ALL LOCAL, STATE, INTERNATIONAL, AND/OR
GOVERNMENT LAWS, RULES, REGULATIONS AND CODES APPLICABLE TO YOUR INSTALLATION.
DO NOT INSTALL THIS PRODUCT IN A MANNER THAT DISCHARGES TOWARDS PEOPLE OR EQUIPMENT. SERI-
OUS INJURY AND/OR DAMAGE MAY RESULT.
PROPER DISPOSAL OF DRAINED LIQUIDS THROUGH THIS PRODUCT ARE THE RESPONSIBILITY OF THE USER.
For optimum performance and safety, please read and understand all instructions before installation.
Personnel must use safe working practices and observe all applicable local and international regulations, safety, health and legal requirements when
installing and operating this product. Improper operation or maintenance of this product could be potentially dangerous resulting in an accident
causing injury or death. VanAir Systems cannot anticipate every possible circumstance which represents a potential hazard. The Warnings in this
manual cover the most common potential hazards and are therefore not all-inclusive. The installation and maintenance of this product must be in
strict accordance with this instruction manual or the warranty will be invalidated.
•
•
•
•
•
•
FIGURE 1
1 1/2"
2"
3/4"
1/2"
1" BRASS
1"
3/4"
2-1/2"
1/2"
3"
STAINLESS
STEEL
VALVE
SIZE
(NPT) VALVE
MATERIAL WEIGHT
(LBS)
ACTUATOR
TORQUE
(IN/LBS)
300
150*
150*
150*
150*
9.66
8.67
8.18
21.16
16.14
5.78
6.00
5.68
7.73
7.33
3.43
3.00
2.80
6.89
6.10
150*
150*
150*
600
600
NOTES:
1. RATED PRESSURE: BRASS 600 PSIG COLD WOG.
SS 900 PSIG COLD WOG
2. VALVES ARE FULL PORT 2 PIECE BALL VALVES
3. AVAILABLE ELECTRICAL: -115VAC-1PH-50/60HZ, MAX CURRENT: 1.7 AMPS
-230VAC-1PH-50/60HZ, MAX CURRENT: 0.9 AMPS
-12VDC, MAX CURRENT: 1.7 AMPS
-24VDC, MAX CURRENT: 0.9 AMPS
(DC VOLTAGE UNITS ARE SUPPLIED WITH POWER CORD BUT WITHOUT PLUG)
4.ENCLOSURE RATING: NEMA 4
5. AMBIENT TEMPERATURE OPERATING RANGE: 0 TO 120°F
6. VALVE INTERNAL MATERIALS:
BRASS VALVES; BALL-CHROME PLATED BRASS
STEM-BRASS, NICKEL PLATED
SEAT-RTFE
316 SS VALVES; BALL-316SS
STEM-316SS
SEATS-PTFE/TFM
POWER
POWER
ON
ON
PUSH
PUSH
TO
TO
TEST
TEST
PUSH-TO-TEST
BUTTON
POWER ON
LIGHT
6.06
6.58
6.94
5.75
5.58
A
8.833.56
5.31
4.60
2.93
2.60 8.39 8.16
DIMENSIONS
B
10.65
12.96
B
C
7.51
10.86
11.65
7.78
7.93
8.43
9.13
7.83
9.72
7.02
C
6.81
6.00
1.72
B/2
1 1/2"
2" 10.23
9.48
6.51
6.98 5.40
4.46 14.88 11.65 150*
300
A
600
350
475
780
38
71
110
143
205
19
34
52
FLOW
COEFFICIENT
CV
(316 SS)
* ACTUATOR TORQUE FOR THESE UNITS WITH DC VOLTAGE IS 300 IN/LBS.

PAGE 2
1.0 DESCRIPTION OF NORMAL OPERATION:
1.1 This product consists of a quarter turn ball valve mated to an electric actuator with a fully adjustable timer
controller. The product is designed for mounting in a pipe-line requiring adjustable set closed times and
adjustable set open times. A common application is draining fluids from compressed air system components
such as separators, filters, airlines and receiver tanks. The timer is set at the factory to open the valve for
10 seconds every 2 hrs.
2.0 INSTALLATION INSTRUCTIONS: (Reference Figure 2)
2.1 Carefully unpack the valve from its shipping box or boxes. Check for visible signs of damage immediately file a
claim with the carrier if damage is found. Do not install a damaged valve or actuator. Note: 2” valves and larger
will be shipped in two boxes, one containing the valve and one containing the actuator. Smaller valves are
shipped with actuator installed.
2.2 2” valves and larger will require installing the actuator after installing the valve in the line (See Figure 3).
2.3 Make sure that all pressure is removed from the line where the valve is to be installed. Make precautions to
ensure the line remains free of pressure during the installation process.
2.4 Check the line for obstructions and clean as required.
2.5 Make sure all components and parts you are installing meet the temperature and pressure ratings of your
system. (piping, manual valves, fittings, or electrical parts are not included)
2.6 Install a tee onto the line with the outlet facing down. Install a nipple and manual ball valve on the tee facing
down. This is for bypassing the timer valve if it is not operational for any reason.
2.7 Install an isolation valve on the remaining opening. Close both manual valves and install a nipple and union on
the isolation valve.
2.8 Install the valve after the union and install all additional piping downstream of the valve and bypass valve per
your local requirements.
2.9 Locate a suitable power source and verify it meets the requirements of your valve (see valve label). Wire the
valve using the cord included or conduit taking all precautions necessary to meet all required electrical codes for
your location. Verify your timer valve is in the closed position and that timing is per your needs.
2.10 Review steps 2.1 through 2.9 to verify no steps were skipped.
2.11 Slowly pressurize the system. Once the system is fully pressurized, slowly open the isolation valve and check
the system for leaks. In the event a leak is discovered, remove pressure from the system and repair before
proceeding.
2.12 Your valve is now installed and ready for operation.
FIGURE 2 RECOMMENDED INSTALLATION
CAUTION: DO NOT INSTALL MORE THAN ONE FLOW SOURCE PER VALVE. MULTIPLE SOURCES WILL HAVE VARIED
PRESSURES RESULTING IN HIGHEST TO LOWEST CONTAMINATION.

PAGE 3
3.0 ADJUSTING THE TIMER
3.1 The time between drain periods and drain periods are adjusted by a dipswitch keyboard located on the circuit
board inside the cover. Remove power from the unit and then unscrew the (4) screws holding the cover in
place. Take caution not to stress the wire harness connecting the bottom board to the top board.
3.2 Adjust per the chart in Figure 4. Note: The timer settings cannot be changed unless power is removed from
the unit.
3.3 Reassemble cover making sure that the cover o-ring seal is properly seated and the wire harness is not
positioned near the motor.
3.4 Apply power to the unit and push the TEST button to clear the previous setting.
FIGURE 4
FIGURE 3 ASSEMBLY OF ACTUATOR AND VALVE (1-1/2” AND LARGER)
CAUTION
POWER MUST BE REMOVED FROM
UNIT WHEN CHANGING SETTINGS.
TEST BUTTON MUST BE USED
ONCE AFTER POWER IS RESTORED
TO INITIALIZE NEW SETTINGS.
ACTUATOR
VALVE STEM
BALL VALVE
STEM ADAPTER
(1) NEEDED FOR 1-1/2” AND 2” VALVE.
NO STEM ADAPTERS ARE NEEDED FOR 2-1/2” AND 3” VALVES.
MOUNTING BOLTS (4 EACH)*
MOUNTS BALL VALVE TO ACTUATOR
* FOR 1-1/2” & 2” VALVE USE (4) M6 X 16MM HEX HEAD SCREWS
TIGHTEN DOWN WITH A 6MM OPEN END WRENCH.
FOR 2-1/2” & 3” VALVE USE (4) M8 X 20 MM HEX HEAD SCREWS
TIGHTEN DOWN WITH A 8MM OPEN END WRENCH.

PAGE 4
Note: Service work to be done by qualified personnel only! Always remove pressure and power from the unit before servicing.
TROUBLE SHOOTING
PROBLEM CAUSES SOLUTION
Unit will not operate (Power
On LED is not lit) No power Check power supply. Check circuit breakers or fuses. Check to see if circuit has a remote
power on/off switch.
Fuse F1 is blown Replace Fuse F1.
Unit will not operate (Power
On LED is lit)
Fuse F2 is blown Turn power off and back on. Press the Push to Test button. If valve does not rotate, fuse
labeled F2 on bottom board is blown. Replace fuse.
The control board did
not sense that the
next position, closed
or open, was reached
for a period of 15
seconds
If the valve rotates several rotations and then randomly stops, press the Push To Test But-
ton. If the valve repeats the fault, the optic sensor has failed (consult factory). If the valve
rotates back to closed, the fault was corrected and the unit is running correctly.
Faulty actuator/motor/
valve assembly
Press the Push To Test Button. If the actuator motor turns but the valve does not, check
for a broken or loose valve stem. If the stem is broken, replace the valve. If this is not the
problem, replace the entire unit. If the motor will not turn after power is applied directly to it,
the motor has failed and the unit must be replaced.
Valve binds during rotation Ball valve seats worn Replace the ball valve. Ball valve should be replaced at some time between 100,000 and
150,000 cycles (will vary with application).
Ball valve ball clogged
or damaged Free valve of any debris. If valve is damaged, replace.
Ball valve leaks prematurely Defective ball valve Replace ball valve.
Valve position is opposite
of where it should be in the
sequence Power Interruption Press the Push to Test button. Valve will rotate to the closed position.
Valve operates at other than
set times
Power interruption
durring cycle
Settings changed with
power on
Valve will continue on set time once power is restored from the point power was inter-
rupted.
Remove power and adjust timer to desired settings. See SECTION 3.0
4.0 PUSH TO TEST BUTTON
4.1 Must be pressed after timer change to initialize new setting.
4.2 If depressed and released, the valve will cycle one time.
4.3 If depressed and held, the valve will stay open until released.
5.0 REQUIRED MAINTENANCE
Periodically check the valve for the following:
5.1 Press the Push to Test button to verify valve rotation. Valve should rotate back to closed position.
5.2 Check actuator to valve connection area for debris which could impede proper operation.
5.3 Check wires and/or electrical connections for signs of damage.
5.4 Check valve for leaks. If leaks are present, remove pressure from the system and replace the ball valve.
5.5 Check fasteners for tightness.