Enchlor SERIES 1500 User manual

SERIES 1500 VACUUM MONITOR
OPERATION MANUAL
130 West Main Street
Silverdale, PA 18962

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Table of Contents
Section 1 Introduction ..................................................... 2
Section 2 Inventory.......................................................... 2
Section 3 Specifications.................................................. 3
Section 4 Operation Basics............................................. 4
Digital Display.................................................. 4
LED Indicators .................................................. 4
Alarm Outputs ................................................. 5
Section 5 Installation ....................................................... 5
Opening Unit ................................................... 6
Enclosure Mounting ........................................ 6
Installing Vacuum Hose ................................. 7
Installing Power/Alarms.................................. 7
Section 6 Set Up and Calibration ................................... 7
Delay Timer Adjustment ................................. 7
Low Level Adjustment..................................... 8
High Level Adjustment.................................... 8
Alternate Method for Adjustment.................. 8
Analog Output................................................. 9
Maintenance and Calibration....................... 9
Warranty Information...................................... 10
Figure 1 Installation Diagram ....................................... 11
Figure 2 Enclosure Mounting ........................................ 12
REV. J August 1, 2005

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Section 1 Introduction
The 1500 is a full-featured vacuum monitoring system. The system uses the
latest in integrated circuit technology, which allows a compact design,
accuracy and reliability. The 1500 features both high and low vacuum
detection, separate high, low and latch alarm relays, three digit display of
vacuum in inches of Hg., LED status indicators and a analog output. The
high and low alarm levels are user adjustable along with a variable delay
timer. The enclosure has a NEMA 4X rating; therefore it can be mounted
outside. Applications include loss of chlorinating in water and wastewater
treatment, pool pump monitoring, automotive test equipment and many
others.
Section 2 Inventory
The following items are included with the 1500:
1. 1500. Contains the electronics housed in a NEMA 4X enclosure.
2. Sensor enclosure with oil based protection device.
3. Two watertight fittings used for running the power and alarm
wires from the control box to the alarms.
4. ¼” tube fitting attached to the oil based protection device.
5. Power cord.
6. Instruction manual.
7. Warning label attached to the oil based protection device.

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Section 3 Specifications
Input voltage: 115V 60 Hz @ 0.1 amps
Alarm relays: NO\NC Type
240V AC @ 5 amps resistive
115V AC @ 5 amps general use
30V DC @ 5 amps general use
Gas\Fluid compatibility: System includes a protection device that uses a
chemically inert synthetic oil compatible with chlorine, sulfur dioxide and
ammonia gas.
Enclosure: ……………………………………………………. NEMA 4X rated
Vacuum measurement range: ………………………… 0 to 30 in. Hg.
Low alarm range: …………………………………............ 0 to 15 in. Hg.
High alarm range: …………………………………………. 15 to 30 in. Hg.
Over pressure: ………………………………............... 50 PSI.
Delay timer: ………………………………............... 1 to 100 sec.
Analog output:
voltage: ………………………………............... 0 to 3 VDC.
current: …………………………………........... 0 to 3 ma DC.
Reset switch: …………………………….….............. IP 65 protection
External connectors: ……………………………………........ IP 68 protection
Indicators:
vacuum: ……………………………… 3 digit digital LED display
alarms: …………….. 3 LED indicators/High, Low and Latch
polarity: ……………………………. 1 LED indicator for pressure
Temperature range (system):
storage: .............………………..……………… -30 C to 70 C
operating: ………………............………………... -20 C to 50 C
vacuum temperature range: ………………….….. -40 C to 50C

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Humidity: ………………………………… Relative 0 to 90% noncondensing
(Specifications are subject to change without notice)
Section 4 Operation Basics
Digital Display
The three-digit display represents the real time vacuum pressure in inches
of Hg. Minimum vacuum equals 00.0 and the maximum vacuum reading,
depending on altitude, is approximately 30.9 inches.
LED Indicators
The 1500 has four LED indicators; High, Low, Latch and Polarity. See Fig. 1
for their location.
High LED Indicator
This LED indicates that the vacuum pressure exceeds the preset High
Alarm set point.
NOTE: This indicator is real time, i.e., it does not wait for the delay timer to
time out.
Low LED Indicator
This LED indicates that the vacuum pressure is below the preset Low Alarm
set point. This LED indicator is also real time.
Latch LED Indicator
When either the high or low indicators are active, this starts the delay
timer. If the alarm is active longer than the preset delay time, then the
latch LED indicator will become active. This indicator stays active until the
manual reset button (see Fig. 2) is pushed. This indicator implies that either
an alarm has occurred or is still active. If the latch indicator is on and the
High/Low indicators are off, then an alarm condition has occurred, but is
not active now. If either the High or Low indicators are active, then this
represents that the alarm condition is still active.
NOTE: The High or Low alarm relays do not become active until the latch
alarm indicator is on.
Polarity LED Indicator
When this LED is on this indicates that the 1500 is measuring pressure. The
digital display shows this pressure in inches of Hg. pressure.

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Alarm Relays
The 1500 has three alarm relay outputs. The alarm relays do not become
active until the delay timer times out, which causes the latch alarm
indicator to become active. The three alarm relays are general purpose
and can be used for exterior alarms, load switching or phone monitoring.
Note: Do not exceed relay specifications.
High Alarm Relay
The High Alarm relay becomes active from a high alarm condition after
the delay timer times out. This relay stays active as long as the alarm
condition exists. Once the alarm condition goes away, this relay
becomes inactive.
Low Alarm Relay
The Low Alarm relay becomes active from a low alarm condition after the
delay timer times out. This relay stays active as long as the alarm
condition exists. Once the alarm condition goes away, this relay
becomes inactive.
Latch Alarm Relay
When either the High or Low Alarm relays become active and the delay
time is over the latch alarm relay also becomes active. This is indicated
by the Latch Alarm indicator. This relay stays active until the manual reset
button is pushed (see Fig. 2).
NOTE: In some applications, like gas chlorination in water and wastewater
treatment, special attention needs to be given to the electrical hookup. If
your vacuum source under normal operation is cycled on and off, as is
the case when the vacuum is created only when a well pump is
operating, then the 115V AC power to the 1500 should be switched on
and off with the well pump. This will prevent a low alarm condition when
the pump is off.
Section 5 Installation
Installation should only be performed by a licensed electrician. Follow
any local, state or other applicable codes that apply when installing this
unit.
THIS UNIT SHOULD BE WIRED TO A GROUND FAULT RECEPTACLE.

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CAUTION: HIGH VOLTAGE COULD EXIST INSIDE THIS UNIT. DISCONNECT ALL
POWER BEFORE INSTALLATION.
Opening Unit
Remove the four plastic screws to open the unit. The printed circuit board
contains static sensitive parts, so the installer should wear a grounding
strap when handling the board.
Enclosure Mounting
IMPORTANT: This unit contains two enclosures. The larger one contains the
electronics (1500) and the smaller one contains the sensor. The two
enclosures are permanently connected together by a low voltage wire.
The sensor enclosure contains an oil based protection device that is filled
with a special fluid. The protection device has a cap over the ¼” fitting to
prevent the oil from leaking out during shipping and installation. THE
SENSOR ENCLOSURE MUST BE MOUNTED IN AN UPRIGHT POSITION TO
PREVENT THE FLUID FROM LEAKING OUT. Once the unit is securely mounted
in an upright position, the cap over the ¼” fitting can be removed.
The recommended mounting method for the 1500 is to use four mounting
holes located where the 4 plastic screws are that hold down the lid. Use
the box as a template for mounting (see Fig. 2).
NOTE: THE 1500 SHOULD NOT BE MOUNTED WHERE SUNLIGHT CAN DIRECTLY
ENTER THE TRANSPARENT COVER.
The printed circuit board is designed to have power come in from the
bottom of the box. Remove the knockouts that are needed for power
entry. Two watertight fittings are provided for the power and alarm line. If
the board must be removed to install a watertight fitting, care must be
taken in handling the board.
NOTE: IF YOU RUN CONDUIT INTO THE BOX AND DO NOT USE THE
WATERTIGHT FITTINGS, YOU MUST USE A SEALANT TO SEAL AROUND THE
CONDUIT CONNECTION.
Install the printed circuit board after the connectors have been installed.
Use the four #6 screws provided to mount the board in the box and
tighten only to a snug fit. DO NOT OVER TIGHTEN (See Fig. 2).

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Vacuum Line and Reset Switch
Connect your ¼” vacuum hose to the ¼” barb fitting attached to the
protection device. The reset switch is prewired to the board reset
terminals.
Power and Alarm Wiring
CAUTION: BE SURE POWER IS DISCONNECTED BEFORE HANDLING ANY
WIRES.
WARNING: IMPROPER WIRING TO THIS UNIT CAN DAMAGE UNIT AND
COULD CAUSE SERIOUS BODILY INJURIES. OVERPRESSURE ON THIS UNIT IS
RATED AT 50 PSI. EXCEEDING THIS PRESSURE CAN CAUSE A RUPTURE OF THE
SENSOR. See Fig. 1 for typical electrical wiring. Connect 115V AC to the
connector location labeled HOT, NEU and GND.
NOTE: A surge arrestor is recommended on the AC power line to prevent
damage from lightning strikes or other power surges. The alarms can be
hooked up in many ways. Be sure the relay specifications are not
exceeded. The relay outputs are labeled HIGH ALARM, LOW ALARM and
LATCH ALARM. Remember the latch alarm will stay active until the reset
button is pushed.
Note: NO = Normally open contact
NC = Normally closed contact
COM = Relay common
Section 6 Set up and Calibration
The 1500 comes preset at the following default levels:
Delay: 50 sec.
Low Alarm: 5 in. Hg.
High Alarm: 25 in. Hg.
The following is a procedure for changing these values. See Fig. 1 for the
location of the adjustment pots.
CAUTION: HIGH VOLTAGE EXISTS INSIDE THE UNIT.
Delay Adjustments

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The delay time is adjustable from approximately 1 second to 100 seconds.
To adjust the delay, insert a small screwdriver into pot R24, rotate until the
desired delay is achieved. The delay value is printed on the board.
Low Level Alarm
The Low Level alarm is adjustable from approximately 0.0 to 15 inches of
Hg. To adjust the low level, insert a screwdriver into pot R19 and rotate it
to the desired level. MIN = 0 and MAX = 15 inches of Hg.
NOTE: If you want to disable the low alarm, turn the pot counter clockwise
until it stops.
High Level Alarm
The High Level alarm is adjustable from approximately 15 to 30 inches of
Hg. To adjust the high level, insert a screwdriver into pot R16 and rotate it
to the desired level. MIN = 15 inches of Hg. and MAX = 30 inches of Hg.
NOTE: If you want to disable the high alarm, turn the pot clockwise until it
stops.
Alternate Method for Accurate
High/Low Level Adjustment
If a high degree of accuracy is required, then use the procedure in the
following example:
Example: If you desire a high level alarm at 26.3 inches of Hg.:
1. Adjust your vacuum level until the digital readout
reaches 26.3.
2. Rotate the high level alarm pot full counter clockwise.
3. Rotate the high level pot clockwise slowly until
the high level LED comes on. This represents
the correct adjustment for 26.3 inches of Hg.
This method can be used for low level adjustment, except the rotation of
the pot is reversed.

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Analog Output
The 1500 has an analog output, which will allow the vacuum to be
remotely monitored. The connection for this is located in the upper left
section of the printed circuit board (see Fig. 1). Two spade lugs are
provided for the connection. They are labeled GND for ground and OUT
for the output. The output is capable of sourcing 0 to 3 VDC or 0 to 3 ma.
If a 4 to 20 ma loop is required, a signal conditioner can be used to
convert the output. These are available from many sources.
Maintenance and Calibration
Once the 1500 has been in operation for approximately one week, the
unit should be checked for the correct zero reading. This is the reading
when no vacuum is present. Ideally, the zero reading would be 00.0.
However, due to the ambient temperature, some variation is normal. If
the zero reading is over 00.7 then an adjustment is needed. The zero
adjustment pots are located in the upper right hand corner of the board.
One of the pots, if looked at from the middle of the board, is rotated all
the way to the right and the other pot is rotated around the 12:00 position.
The pot that is close to the 12:00 position is the pot to adjust. Slowly turn
this pot to get the zero reading as close to 00.0 as you can. This will end
the zero calibration. If the reading still does not read 00.0 then slowly
adjust the other pot until a reading of 00.0 is set.
NOTE: AT LEAST ONE OF THE POTS MUST ALWAYS BE ROATED ALL THE WAY
TO THE RIGHT.
Once a month the system should be functionally tested. This testing
should include all relays, LED indicators, delay timer and vacuum level
accuracy. To perform this test adjust your vacuum level up and down to
cause the high and low alarms to engage. The delay timer and rest can
also be tested in the same manner. At this time, inspect the board for any
corrosion or loose wires. If corrosion is present check all fittings for a snug
fit.
DO NOT ATTEMPT TO CLEAN ANY CORROSION FROM THE BOARD. HIGH
VOLTAGE EXISTS ON THE BOARD.
Corrosion can only be removed by a trained technician. The outside of
the enclosure can be cleaned with warm water and a damp cloth.

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LIMITED WARRANTY
ENCHLOR INC. warrants this product to be free from defects in material
and workmanship for a period of one (1) year from the date of the first
consumer purchase.
Except as specified below, this warranty covers all defects in material or
workmanship in this product. The following are NOT covered by the
warranty:
1. Any product on which the serial number has been defaced,
modified or removed.
2. Damage, deterioration or malfunction resulting from:
a. Accident, misuse, abuse, neglect, fire, water, lightning or any
other acts of Nature.
b. Any unauthorized product modification or failure to follow
instructions supplied with the product.
c. Repair or attempted repair by anyone not authorized by
ENCHLOR INC.
d. Any shipment of the product.
e. Any other causes which do not relate to a product defect.
LIMITATION OF IMPLIED WARRANTIES
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO
THE LENGTH OF THIS WARRANTY.
EXCLUSION OF DAMAGES
ENCHLOR INC.’s LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED ONLY
TO THE REPAIR OR REPLACEMENT OF THE PRODUCT AT OUR OPTION.
ENCHLOR INC. SHALL NOT BE LIABLE FOR:
1. DAMAGE TO OTHER PROPERTY CAUSED BY ANY DEFECTS IN THIS
PRODUCT, DAMAGES BASED UPON INCONVENIENCE, LOSS OF USE
OF THE PRODUCT, LOSS OF TIME, OR
2. ANY OTHER DAMAGES, WHETHER INCIDENTAL, CONSEQUENTIAL

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OR OTHERWISE.
Copyright Enchlor Inc.

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J1
1 1J 2
+ +
+
+
RE1
RE3
R16
R19 R24
P2
P1
MIN MIN MAX
MAX
POLARITY
GND
OUT
ZERO
NC NC NC
COM
COM COM
NO NO NO
LATCH ALM HIGH ALM 115V AC
HOT
NEU GND
100
50
1
TIME
DELAY
LEVEL
LOW
LEVEL
HIGH
ALARM ALARM ALARM
LATCH
LOWHIGH
FIG. 1
115V AC
( 4 PLACES )
HOLES
MOUNTING
BOARD
EARTH
MONITOR
PHONE
REMOTE
SIREN
115V AC
115V AC
LIGHT
WARNING
GROUND
115V AC
(INCHES Hg.)
DIGITAL DISPLAY
(LATCH ALARM)
(LOW ALARM)
(HIGH ALARM)
ALARM INDICATORS
CONNECTION
RESET SWITCH
ADJUSTMENT
ZERO
(DELAY TIME)
(LOW LEVEL)
(HIGH LEVEL)
ADJUSTMENTS POTS.
LOW ALM
115V AC
PRESSURE
INDICATOR
TO
COMPUTER
ANALOG
OUTPUT
RE2

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VAC1000
SENSOR ENCLOSURE
VACUUM HOSE CONNECTION
WATER TIGHT LOW VOLTAGE WIRE
FITTINGS
BOX MOUNTING
LOCATIONS
BOARD MOUNTING HOLES
ALARM WIRES POWER CORD
EXTERNAL
FITTINGS
NOTE: SENSOR ENCLOSURE MUST
BE MOUNTED IN AN UPRIGHT POSITION
MOUNTING LOCATIONS
BOARD MOUNTING HOLES
RESET SWITCH
FIG. 2