Air Techniques VACUUM EQUALIZER User manual

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VACUUM EQUALIZER
OPERATOR’S MANUAL

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Safety Instructions ................................................................ 2
Introduction......................................................................... 3
Warranty ............................................................................. 3
On-Line Warranty Registration .............................................. 3
Key Part Identification........................................................... 4
Site Requirements ................................................................ 5
Physical Characteristics ........................................................ 6
Installation Information......................................................... 7
Changing Settings................................................................ 14
Trouble Shooting ................................................................. 18
Parts List / Replacement Parts................................................ 19
Optional Accessories ........................................................... 19
TABLE OF CONTENTS
Use of the Vacuum Equalizer not in conformance with the instructions
specified in this manual may result in permanent failure of the unit.
WARNING: To prevent fire or electrical shock, do not expose this
appliance to rain or moisture.
All user serviceable items are described in the mainte-
nance sections.
Manufacturing date code on serial number label is in the format
MONTH YYYY.
Earth ground.
This symbol alerts the user that important
Operating and Maintenance instructions
have been included with the unit. Read
carefully to avoid any problems.
SAFETY INSTRUCTIONS
Markings.
The following terms or symbols are used on the equipment or in this manual
to denote information of special importance:

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Congratulations on the purchase of your new Vacuum Equalizer. The
Vacuum Equalizer is an electronically controlled device that regulates
the vacuum level in your dental facility. While conserving electricity and
prolonging the life of your pumps the Vacuum Equalizer is capable of
controlling 2 to 4 vacuum pumps that can be turned “OFF” and “ON”
using low voltage remote switch. The Vacuum Equalizer is easily installed
and requires no scheduled maintenance.
The Vacuum Equalizer is warranted to be free from defects in material
and workmanship from the date of installation for a period of 24 months.
Any item returned to our factory in New York through an Air Techniques'
Dealer, will be repaired or replaced at our option at no charge provided
that our inspection shall indicate it to have been defective. Dealer labor,
shipping and handling charges are not covered by this warranty.
This warranty does not apply to damage due to shipping, misuse, careless
handling or repairs by other than authorized service personnel. Warranty
void if installed or serviced by other than Authorized Air Techniques’
Dealer service personnel. Air Techniques, Inc. is not liable for indirect
or consequential damages or loss of any nature in connection with this
equipment.
This warranty is in lieu of all other warranties expressed or implied. No
representative or person is authorized to assume for us any liability in
connection with the sale of our equipment.
WARRANTY
INTRODUCTION
Quickly and easily register the Vacuum Equalizer on-line. Just have
your product model and serial numbers available. Then go to the Air
Techniques web site, www.airtechniques.com, click the warranty
registration link and complete the registration form. This on-line
registration ensures a record for the warranty period and helps us keep
you informed of product updates and other valuable information.
ON-LINE WARRANTY REGISTRATION

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KEY PARTS IDENTIFICATION
VACUUM IN
LOW VOLTAGE
WIRING OUT
TO PUMP
LOW VOLTAGE
CONTROL PANEL
SWITCH
AC POWER IN
(Line Cord or Hardwire)
KNOCKOUTS
CIRCUIT
BREAKERS
LED
INDICATORS (4)
BYPASS
SWITCHES (4)
DOOR RETAINER
1/4 TURN
SCREWS
MAIN
POWER
SWITCH
RJ45 REMOTE PANEL
SWITCH JACK
(Class 2 Wiring Only)

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KEY PARTS IDENTIFICATION
DIP SWITCH
SETTINGS
LABEL
DIP
SWITCHES
LOW VOLTAGE
PUMP TERMINAL
BLOCK
CONTROL PANEL
SWITCH TERMINAL
BLOCK
AC MAINS
TERMINAL BLOCK
TRANSDUCER
FILTER
GROUND
TERMINAL BLOCK
Electrical Input
Wire size AWG #12 to #14 300V minimum permissible
Voltage 100-240 VAC
Frequency 50/60 Hz
Current 1.0 A
Environment Conditions:
Operating Conditions Indoor use at altitudes up to 2000m
Temperature 5° to 40° C (41° to 104° F).
Maximum relative humidity 80% for
temperatures up to 31° C, decreasing
linearly to 50% relative humidity at 40° C.
Supply voltage fluctuation of +/- 10%
of nominal voltage.
IEC 61010 Classification Class II Installation Category
2 Pollution Degree
SITE REQUIREMENTS

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The Vacuum Equalizer can automatically turn up to 4 pumps “ON” and
“OFF” depending on the vacuum demand. If a single pump turns "ON"
and "OFF" three times within an hour, that pump will be locked into the
“ON” position for another hour before returning to normal operation.
The Vacuum Equalizer is also equipped with 4 bypass switches to man-
ually turn the corresponding pump “ON”.
When the Vacuum Equalizer is turned “ON” the primary pump is cho-
sen. Each time the unit is turned “OFF” then back “ON” the primary
pump changes to the next pump in sequence. This allows each pump to
have more equal run times.
Note:
Allow 6 Inches for Wiring
Connections on Left Side.
PHYSICAL CHARACTERISTICS

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Installation
The Vacuum Equalizer is designed for easy flexible installation. It can
be mounted to a wall (preferred) or simply laid flat on a sturdy level
surface. The unit also provides adaptable wiring options. It can be hard
wired directly to AC mains or connected using an optional line cord kit
(P/N 56106). Either way the connection is made, the wiring can be
routed to the side, bottom, or back of the unit via one of three panel
knockouts provided.
Wall Mounting
Refer to the figure below and mount he Vacuum Equalizer to the wall
by performing the following steps.
1. Find a suitable location for the unit.
2. Use Wall Mount Template P/N 56108 to locate position for the 3
mounting holes.
3. Drill three 1/4” holes at designated position for #10 Anchors.
4. Screw unit to wall using supplied Anchors and Screws.
WALL
MOUNT
HOLES
INSTALLATION INFORMATION

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Hard Wiring Unit To Mains
To hardwire the unit to mains, feed wires through one of the 3 knock-
out openings and connect the 3 wires to the Mains Terminal Block and
Ground Terminal Block as shown below.
INSTALLATION INFORMATION
BLK (H)
WHT (N)
STRAIN RELIEF
AC MAINS
TERMINAL
BLOCK
GROUND
TERMINAL
BLOCK
GRN (GND)
STRAIN
RELIEF NUT
Installing Optional Line Cord
To install optional Line Cord, route the Line Cord with Strain Relief
through one of the 3 knockout holes and connect the 3 wires to the
Mains Terminal Block and Ground Terminal Block as shown below.
Block Wiring Diagram
Connections To Mains
Pump Setup
Open front cover by turning the two Door Retaining Screws 1/4 turn
counter clockwise. Each pump in the system should have its two wires fed
through a strain relief on the side of the unit starting with pump 1. Once
the wires are through the strain relief they should be tightened down in
the Terminal Block for the corresponding pump. Refer to Pump Select in
the Changing Settings section if you have more than (2) pumps in your
system.
GRN
(GND)
GROUND
TERMINAL
BLOCK
BLK (H) WHT (N)
AC MAINS
TERMINAL
BLOCK

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Instructions for using the Vacuum Equalizer with VacStar & STS units:
1. The vacuum relief valve on all units controlled by the Vacuum Equalizer
must be set to the same vacuum level. Set vacuum relief valve on each
unit using the same vacuum gauge.
2. The vacuum relief valve on the pumps must be set higher than the
high vacuum setting of the Vacuum Equalizer. (i.e. if the high setting
on the Vacuum Equalizer is set to 9 in-Hg the vacuum relief valve on
the pumps should be set to 10 In-Hg).
3. The low vacuum setting on the Vacuum Equalizer can be set to 6, 7 or
8 in-Hg, depending on what the end user requires.
4. The delay on and delay off time settings of the Vacuum Equalizer can
be set to their lowest values for the greatest electric and water savings.
Note that if a pump turns “ON” and “OFF” three times within an
hour it will stay powered on for an additional hour before returning to
normal operation. If this happens repeatedly it may be beneficial to
increase the delay off time to prevent this from happening.
Instructions for using the Vacuum Equalizer with VacStar NEO units:
1. Up to four VacStar 20 NEO or four VacStar 40 NEO or two VacStar
50 NEO or two VacStar 80 NEO unit can be controlled by the Vacu-
um Equalizer.
2. All the units must be the same. Do not mix VacStar NEO models.
3. The vacuum settings on all the VacStar NEO pumps must be set to the
same value.
4. The vacuum setting on the VacStar NEO pumps must be set to 1
in-Hg higher than the high vacuum setting of the Vacuum Equalizer.
(i.e. if the high setting on the Vacuum Equalizer is set to 9 in-Hg the
vacuum setting on the VacStar NEO should be set to 10 In-Hg).
5. The low vacuum setting on the Vacuum Equalizer can be set to 6, 7 or
8 in-Hg, depending on what the end user requires.
6. The delay on and delay off time settings of the Vacuum Equalizer can
be set to their lowest values for the greatest electric and water savings.
Note that if a pump turns “ON” and “OFF” three times within an
hour it will stay powered on for an additional hour before returning to
normal operation. If this happens repeatedly it may be beneficial to
increase the delay off time to prevent this from happening.
INSTALLATION INFORMATION

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Pump Setup Wiring Diagram
INSTALLATION INFORMATION
Air Techniques Approved Pumps
VS20 VS50, VS50H
VS40 VS80, VS80H
VS20NEO VS50NEO
VS40NEO VS80NEO
STS3, STS5 & STS15
Maximum Switching Voltage: 30 VAC
Maximum Switching Current: 3.5A
Note: Only install one wire per terminal block port. Pumps may
not be wired in parallel. One pump per switch only.
Vacuum Equalizer To Pump
Interconnect wire guage: #14 to #22 AWG
Interconnect wire length: 50 feet maximum
Wire Jacket O.D. 0.187” - 0.300”

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The Vacuum Equalizer needs to read the vacuum level in the piping
between the dental operatories and the vacuum pump (wet system) or stor-
age tank (dry system). A tee needs to be placed in the piping within 10 feet
of the vacuum pump or storage tank. The tee should be positioned
with the open leg pointed up with a minimum of a six inch rise terminating
in a ¾ inch FNPT. The supplied ¾ MNPT x ¼ FNPT reducing bushing
should then be installed into the top of the tee assembly. The supplied
¼ MNPT x ¼ push to connect swivel elbow should then be installed into
the reducing bushing. The supplied ¼ inch OD tubing should then be
attached between the ¼ inch swivel elbow on the tee assembly and the
¼ inch swivel elbow designated VACUUM on the Vacuum Equalizer. A
loop in this tubing will help ensure that liquids do not reach the Vacuum
Equalizer.
We Supply:
¾ MNPT x ¼ FNPT Reducing Bushing P/N 56209
¼ MNPT x ¼ Push to Connect Swivel Elbow P/N 56121
¼ OD Translucent Blue Vacuum Tubing (10 feet) P/N 51453
SWIVEL ELBOW
REDUCING
BUSHING
3/4 FNPT
FROM DENTAL
OPERATORIES TO STORAGETANK (CAS)
TO VACUUM PUMP
1/4”OD TUBING
6"
MIN.
INSTALLATION INFORMATION
Plumbing Installation

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6 VDC Control Panel Rocker Switch, P/N 56233
1
2
3
4
5
6
REAR VIEW 6 VDC CONTROL
PANEL SWITCH (SUPPLIED)
6 VDC Switch to Vacuum Equalizer
Interconnect wire gauge: #14 to #22 AWG
Interconnect wire length: 250 FT. maximum
Jacket Outside Diameter: 0.270” - 0.464” (inches)
INTERCONNECT CABLE
YEL
ORN
BRN
RED
INTERCONNECT CABLE
Bi-Color Push Button Switch to Vacuum Equalizer
Interconnect wire gauge: #14 to #22 AWG
Interconnect wire length: 250 FT. maximum
Jacket Outside Diameter: 0.270” - 0.464” (inches)
Bi-Color Push Button Control Panel Switch, P/N 53202-1
Supplied Control Panel Switches
The Vacuum Equalizer is supplied with two Control Panel Switches; a
Bi-Color Push Button Switch, P/N 53202-1 and a 6 VDC Rocker Switch,
P/N 56233. Either switch provides external remote control of the power
function (ON/STANDBY) for the unit. Use the corresponding drawing
shown below when connecting a Control Panel Switch.
INSTALLATION INFORMATION
Note: The orange (ORG) and Brown (BRN) wires are tied together at the switch panel.

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OPTIONAL REMOTE
PANEL SWITCH
CATEGORY 5 STRAIGHT
CABLE, UP TO 250’
Optional Remote Panel Switch
There is also an optional Remote Panel Switch, P/N 56240, available
as an accessory.
Locate a convenient location for the Remote Panel and install in wall.
Connect the Remote Panel using Category 5 Straight Cable (up to 250
feet) as shown below.
PUMP INDICATOR
LEDS
Important: Make sure to disconnect the CAT5 cable before opening
the front cover. Otherwise damage may occur to either the
CAT5 cable or the RJ-45 Jack.
Note: RJ-45 Jack is a low voltage communications port only. It
is not a Phone or Ethernet Jack.
INSTALLATION INFORMATION

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CHANGING SETTINGS
Important: Make sure the Main Power Switch is “OFF” before
changing any of the field adjustable settings. When
setting dip switches use an appropriate tool to gently
slide switch up or down.
Changes only take affect after the Main Power Switch is
turned "OFF".
1. Using a Control Panel Switch - DIP Switch 1
Note: If using Control Panel Switch or Remote Panel Switch the
Power Switch on the VACUUM Equalizer must be in the
“ON” position.
In order to use a Control Panel Switch or Remote Panel Switch DIP switch
1 must be set to “0”. It is factory set to "1" for “No Panel Switch”. There
is a supplied Control Panel Switch P/N 56233. Install as per Figure 1.
PANEL SWITCH
FACTORY SET AT “1”
DO NOT TOUCH
SET TO “0”
TO USE EITHER
PANEL SWITCH
REMOTE OR CONTROL PANEL
Closed (1)
Open (0)
System functions are set via internal DIP switches shown below. Loosen the
two door retainer thumb screws and open the to access the DIP switches.
DIP Switch Function Control
1Sets the use of a Control Panel Switch or Remote Panel Switch
2Sets the high and low vacuum trip levels
3Sets the delay on timer
4Sets the delay off timer
5Sets the number of pumps in the system
1
DIP Switches 2 3 45

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CHANGING SETTINGS
DIP Switch Setting Label

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2. The high and low vacuum trip levels
The Vacuum Equalizer has a factory preset vacuum range of 7 to 9
inHg. If the vacuum level falls below the vacuum range an additional
pump will be turned "ON" if all pumps are not in use. If the vacuum
level is higher than the vacuum range a pump will be turned "OFF"
unless it is the primary pump. Both the upper and lower ranges are field
adjustable in 1 inHg intervals. The lower limit is 6 to 8 inHg and upper
limit is 9 to 11 inHg.
TRIP
LEVEL
1 2 3 4
Closed (1)
Open (0)
DELAY
ON
1 2 3 4
Closed (1)
Open (0)
3. The delay on timer
The delay “ON” setting indicates the number of seconds, after a low
vacuum level is detected, until the next pump sequence is turned
“ON”. The Vacuum Equalizer has a factory set delay "ON" time of
20 seconds with a field adjustable range of 10 to 160 seconds in 10
second intervals.
CHANGING SETTINGS

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4. The delay off timer
The delay “OFF” setting indicates the number of minutes after a high
vacuum level is detected before a pump is turned “OFF”. The Vacuum
Equalizer has a factory set delay "OFF" time of 10 minutes with a field
adjustable range of 1 to 16 minutes in 1 minute intervals.
DELAY
OFF
1 2 3 4
Closed (1)
Open (0)
PUMP
SELECT
1 2
Closed (1)
Open (0)
5. The number of pumps in the system
The number of pumps that you use can be set to 2, 3 or 4 pumps. The
Pump Select is factory set for 2 pumps.
CHANGING SETTINGS

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SYMPTOM POSSIBLE FIXES
LED indicator turns on, but
the corresponding pump
doesn’t turn on
Check that the power switch on the pump
is “ON”.
Check that the Yellow and Orange wires
from the pump are making contact with
the terminal block.
Pumps are running, and the
Vacuum Level is too high
Check that the Bypass switches are set to
“AUTO”.
Check the “DELAY OFF” switch settings
to make sure the “DELAY OFF” time is
not to long.
Check the “TRIP LEVELS” switch settings
to make sure the “TRIP LEVELS” “HIGH”
value is not too high.
Check the Vacuum In line and filter to
make sure that they are not clogged.
Panel Switch Doesn’t turn the
unit “ON”
Check the wiring connections of the
panel switch.
Check the “REMOTE OR CONTROL
PANEL” switch setting and make sure that
it is set to “0” for using the panel switch.
Make sure that the Main Power switch is
set to “ON”.
Main power Switch doesn’t
turn the unit “ON”
Check that the Circuit Breakers have not
tripped.
Check AC main power wiring connec-
tions are made correctly
Check the “REMOTE OR CONTROL
PANEL” switch setting and make sure that
it is set to “1” to not use a panel switch.
Pump is running, but the LED
indicator is “OFF”
Check that the bypass switch for that
pump is set to “AUTO”
TROUBLESHOOTING

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Part No. Description Qty
56259 Instructions; Vacuum Equalizer 1
30936 Anchor, #10-12 X 1" Screw, Plastic 3
30295 Screw, #10 X 3/4,Type A, Slot Pan Hd 3
85779 Strain Relief, .27- .47 OD Cord, Blk 1
85789 Nut, Strain Relief,1/2NPT, Blk 1
51453 Tubing, Urethane, 1/4OD, Translucent Blue Per Foot
56233 Switch, 6 VDC Rocker, Control Panel 1
53202-1 Switch, Bi-Color, Control Panel 1
56209 Pconn, Bushing, 3/4MNPT X 1/4FNPT 1
43303 Nut, Wire:Blue, 22 TO 14 Gauge, 300V 3
56108 Mounting Template 1
56268 Transducer Filter 1
56113 Swivel Elbow 1/4” PUSH x 1/8” MNPT 1
31191 Cable Clamps, 1/4” 2
30953 Cable Clamp, 3/16” 2
30954 Cable Clamp, 5/16” 3
24128 Reducing Barb, 2/32” x 1/8”
A2334 AC Mains Terminal Block 1
56319 Main Harness Assembly 1
117061 1/2 AMP Circuit Breaker 2
116512 Main Power Switch 1
56318 Bulk Head Fitting Assembly 1
56231 PCB Replacement Kit 1
56298 Acrylic Window 1
Part No. Description
56240 Remote Panel Switch
56106 Line Cord Kit
PARTS LIST/REPLACEMENT PARTS
OPTIONAL ACCESSORIES

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© Copyright Air Techniques, Inc 2004 •P/N 56259, Rev. F - December 2017
Corporate Headquarters
1295 Walt Whitman Road |Melville, New York 11747- 3062
Phone: [phone] |Fax: [phone]
www.airtechniques.com
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For over 50 years, Air Techniques has been a leading innovator and manufacturer
of dental products. Our priority is ensuring complete satisfaction by manufacturing
reliable products and providing excellent customer and technical support. Whether
the need is digital imaging, utility room equipment or merchandise, Air Techniques
can provide the solution via our network of authorized professional dealers. Proudly
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