Enchlor SERIES 1500 Manuel utilisateur

SERIES 1500 VACUUM MONITOR

OPERATION MANUAL

130 West Main Street

Silverdale, PA 18962

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

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.

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

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.

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.

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).

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

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.

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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