ChlorKing® Sentry UV
SENTRY AQUA GUARD
LOW PRESSURE UV LIGHT
SYSTEM
Maintenance Manual
FOR ALL SAG MODELS
1
UV Maintenance
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TABLE OF CONTENTS
MODELS COVERED
Model Numbers and Description
Lamp Life
Safety Considerations
3
3
3
3
Routine Maintenance
Daily Checks
Cleaning the Quartz Sleeve
Cleaning the UV Monitor
Restart the UV System and Check the System Output
Lamp Replacement
UV Monitor Calibration
Calibrating Monitors with Teflon Shades
Replacing a Broken Quartz Sleeve
5
5
5
12
13
15
15
17
19
Note: This manual is subject to change at any time based on system improvements,
design changes, authorized modifications or new information. Please consult
ChlorKing for the latest revision.
Manufacturer:
ChlorKing-Sentry UV Inc
6767 Peachtree Industrial Blvd.
Norcross, GA 30092
1-800-536-8180
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MODELS COVERED
MODEL NUMBERS AND DESCRIPTION:
SAG120A120 – Sentry Aqua Guard 120A 120
SAG120A230 – Sentry Aqua Guard 120A 230
SAG120A120PVC – Sentry Aqua Guard 120A 120 PVC
SAG240A120 – Sentry Aqua Guard 240A 120
SAG240A230 – Sentry Aqua Guard 240A 230
SAG240A120PVC – Sentry Aqua Guard 120A 120 PVC
SAG480A120 – Sentry Aqua Guard 480A 120
SAG480A230 – Sentry Aqua Guard 480A 230
SAG720A120 – Sentry Aqua Guard 720A 120
SAG720A230 – Sentry Aqua Guard 720A 230
SAG960A120 – Sentry Aqua Guard 960A 120
SAG960A230 – Sentry Aqua Guard 960A 230
SAG1200A120 – Sentry Aqua Guard 1200A 120
SAG1200A230 – Sentry Aqua Guard 1200A 230
LAMP LIFE
13,000 hours of operation
SAFETY CONSIDERATIONS
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS
WHEN INSTALLING, OPERATING, AND MAINTAINING THIS EQUIPMENT, KEEP
SAFETY CONSIDERATIONS FOREMOST. USE PROPER TOOLS, PROTECTIVE
CLOTHING, AND EYE PROTECTION WHEN WORKING ON OR INSTALLING THE
EQUIPMENT. FOLLOW THE INSTRUCTIONS IN THIS MANUAL AND TAKE ANY
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ADDITIONAL SAFETY MEASURES APPROPRIATE. BE EXTREMELY CAREFUL IN
THE PRESENCE OF HAZARDOUS SUBSTANCES.
THE PERSONNEL RESPONSIBLE FOR INSTALLATION, OPERATION, AND
MAINTENANCE OF THIS EQUIPMENT MUST BE FULLY FAMILIAR WITH THE
CONTENTS OF THIS MANUAL.
ANY SERVICING OF THIS EQUIPMENT MUST BE DONE WITH THE UNIT FULLY
OFF AND DISCONNECTED FROM THE POWER SOURCE AND ALL PRESSURE
BLED FROM THE LIQUID LINES.
WARNING
•
•
•
•
•
•
•
•
•
CONNECT THE EQUIPMENT ASSEMBLY TO A CIRCUIT PROTECTED BY A
GROUND-FAULT CIRCUIT BREAKER.
ONLY A CERTIFIED TECHNICIAN MAY INSTALL AND SERVICE THE
CHLORKING® SENTRY AQUA GUARD SYSTEM.
MODIFYING THE CHLORKING® SENTRY AQUA GUARD SYSTEM IN ANY
WAY MAY CAUSE BODILY INJURY AND WILL VOID THE WARRANTY.
DO NOT ALLOW CHILDREN TO OPERATE THE CHLORKING® SENTRY
AQUA GUARD SYSTEM.
ONLY REPLACE COMPONENTS WITH THOSE SPECIFIED BY THE
MANUFACTURER.
WHEN INSTALLING THE SYSTEM, ENSURE THAT POWER IS LINKED TO
THE MAIN PUMP POWER SOURCE FOR THE POOL TO ENSURE THAT THE
CHLORKING® SENTRY AQUA GUARD SYSTEM NEVER OPERATES WHEN
THE PUMPS ARE OFF.
ALL BOXES ON THE CHLORKING® SENTRY AQUA GUARD SYSTEM
CONTAIN HIGH VOLTAGE COMPONENTS. NEVER OPEN ANY BOX WHILE
THE POWER IS ON.
NEVER OPEN THE CHLORKING® SENTRY AQUA GUARD SYSTEM OR
LOOK DIRECTLY AT THE UV LAMP WHEN IT IS OPERATING. DIRECT OR
INDIRECT EXPOSURE TO THE LIGHT EMITTED BY THE LAMP WILL
CAUSE SERIOUS EYE DAMAGE AND SEVERELY BURN UNPROTECTED
SKIN.
REPLACE DAMAGED CORDS IMMEDIATELY.
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UV Maintenance
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ROUTINE MAINTENANCE
Daily Checks
Green LED, no
service
required
Yellow LED,
needs service
Check the UV meter and LED lights on the power supply daily. Under normal operating
conditions, the UV% meter will indicate a value over 70%, or the mJ/cm² meter will
indicate a value over 45, and the green LED will be illuminated. If the UV meter falls
below 70%, or the mJ/cm² meter falls below 45, the green LED will go out and the
yellow LED will illuminate. A meter display of less than 70% or 45 mJ/cm² with a yellow
LED is an indication that maintenance or repairs are needed.
The first step is to clean the quartz sleeve and monitor window.
Cleaning the Quartz Sleeve
CAUTION
LAMPS AND QUARTZ SLEEVES ARE MADE OF GLASS AND ARE EXTREMELY
DELICATE. CARE SHOULD BE TAKEN WHEN HANDLING OR REPLACING
THESE COMPONENTS. WEAR COTTON GLOVES WHEN HANDLING LAMPS
HOLD LAMPS BY THE ENDS ONLY. NEVER TOUCH THE GLASS WITH BARE
HANDS. WIPE ANY FINGERPRINTS FROM LAMPS WITH ALCOHOL.
QUARTZ SLEEVES ARE SHIPPED WITH A SMALL SILICONE LAMP SHOCK
ABSORBER AT THE BOTTOM OF THE SLEEVE. THIS COMPONENT MUST
REMAIN IN PLACE TO PREVENT DAMAGE FROM LAMP INSTALLATION.
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Step 1: Turn the system off.
Step 2: Unplug both power sources.
Step 3: Open the bypass valve and close the isolation valves.
UV system installation diagram
Close the
isolation valve
Power Cords to Lamps
Close the
isolation valve
Safety Cover
Pressure Switch
120VAC
Strainer Spool
Power Box
To Pool
Return
120VAC
Light
Chamber
Safety Switch
Light Sensor
Bypass
Water Flow
Filter
Open the
bypass valve
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Step 4: remove the 4 nuts and remove the safety cover.
Safety
Cover
4 Nuts
Step 5: Bleed any pressure from the system.
Step 6: Loosen the liquid tight gland.
Loosen
gland
Bleed
Pressure
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Step 7: Remove the viewing cap.
Step 8: Remove the UV lamp.
CAUTION
DO NOT DISCONNECT THE ELECTRICAL CONNECTION TO THE LAMP BEFORE
THE LAMP IS COMPLETELY OUT OF THE QUARTZ SLEEVE.
DO NOT HANDLE LAMPS WITH BARE HANDS. ALWAYS USE COTTON GLOVES.
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Step 9: Remove the quick disconnect clamp.
Quick
disconnect
clamp
Step 10: Remove the quick disconnect quartz sleeve assembly.
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NOTE
Be careful not to lose the gasket for the quick disconnect quartz sleeve assembly or the
silicone lamp shock absorber in the bottom of the quartz sleeve.
Gasket
CAUTION
WEAR APPROPRIATE SAFETY EQUIPMENT WHEN WORKING WITH MURIATIC
ACID.
Step 11: Clean the quartz sleeve.
Clean the quartz sleeve by wiping with a clean cotton cloth and a standard glass
cleaner. Sleeves with calcium accumulation will require cleaning with a 5:1 water and
muriatic acid solution.
If needed the inside of the sleeve can be cleaned with a shotgun barrel cleaning rod.
Be sure not to lose the small silicone lamp shock absorber in the bottom of the quartz
sleeve.
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Shotgun
barrel
cleaning rod
Step 12: Reassemble.
Check the gasket on the quartz sleeve quick disconnect flange. Silicone o-ring lubricant
will extend the life of the gasket. Carefully lower the quartz sleeve assembly into the
chamber. On chambers for SAG480 through SAG1200 the quartz sleeves sit on top of
spring support assemblies. Quartz sleeves must be carefully lined up with the spring
and set into the spring socket or damage to the sleeve will occur. When the quartz
sleeve is properly located in the spring assembly socket the quick disconnect quartz
sleeve assembly will rest ¼ inch above the gasket. Gently press the quartz sleeve
assembly into place and install the quick disconnect clamp to secure the sleeve in
place.
CAUTION
THE WIRING CONNECTOR FOR THE LAMP MUST BE INSTALLED ON THE LAMP
BEFORE IT IS LOWERED INTO THE QUARTZ SLEEVE OR DAMAGE TO THE
LAMP OR QUARTZ SLEEVE MAY OCCUR.
Place the four pin connector onto the lamp and lower the lamp all the way to the bottom
of the quartz sleeve. Screw the viewing cap onto the quick disconnect quartz sleeve
assembly and tighten the liquid tight gland.
Reinstall the safety cover.
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Cleaning the UV Monitor
Step 1: Drain the water from the UV chamber.
Step 2: Carefully unplug and remove the UV monitor from the UV chamber.
CAUTION
TAKE CARE ON STAINLESS CHAMBER MODELS WHILE REMOVING MONITOR
NOT TO LOSE THE OPTIONAL SMALL THIN TEFLON SHADE THAT MAY BE
BETWEEN THE MONITOR AND QUARTZ WINDOW
UV Monitor Assembly for Stainless Steel Units
O-ring
Quartz
window
Nut
Monitor
head
Optional
shade
UV Monitor Assembly for PVC Units
Jaco
housing
O-ring
Optional
quartz
window
Nut
Monitor
head
Optional
shade
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Step 3: Clean the quartz window or monitor head as needed with a cotton cloth and
glass cleaner. Quartz windows or monitor heads with calcium accumulation will require
cleaning with a 5:1 water and muriatic acid solution.
CAUTION
WEAR APPROPRIATE SAFETY EQUIPMENT WHEN WORKING WITH MURIATIC
ACID.
Step 4: Reinstall the UV monitor in the order shown on page 12.
Restart the UV System and Check the System Output
Step 1: Open the isolation valves and close the bypass valve.
UV system installation diagram
Open the
isolation
valve
Power Cords to Lamps
Safety Cover
Pressure Switch
120VAC
Open the
isolation
valve
Strainer Spool
Power Box
To Pool
Return
120VAC
Light
Chamber
Safety Switch
Light Sensor
Bypass
Water Flow
Filter
Close the
bypass
valve
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Step 2: Bleed the air from the system.
Air bleed
Step 3: Plug the unit back into the power source.
Step 4: Turn the system power switch on.
Step 5: Allow the system to operate for 15 minutes.
Step 6: Note the meter reading and LED status.
Check the UV meter and LED lights on the power supply. Under normal operating
conditions, the UV% meter will indicate a value over 70%, or the mJ/cm² meter will
indicate a value over 45, and the green LED will be illuminated. If the UV meter falls
below 70% or 45 mJ/cm², the green LED will go out and the yellow LED will illuminate.
A meter display of less than 70% or 45 mJ/cm² with a yellow LED is an indication that
maintenance or repairs are needed.
Do not recalibrate the monitor unless new lamps have been installed.
The next step is to replace the UV bulbs.
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Lamp Replacement
Lamps are designed to provide a useful service life of 13,000 hours. After that time, the
lamps will need to be replaced.
CAUTION
LAMPS AND QUARTZ SLEEVES ARE MADE OF GLASS AND ARE EXTREMELY
DELICATE. CARE SHOULD BE TAKEN WHEN HANDLING OR REPLACING
THESE COMPONENTS. WEAR COTTON GLOVES WHEN HANDLING LAMPS.
HOLD LAMPS BY THE ENDS ONLY. NEVER TOUCH THE GLASS WITH BARE
HANDS. WIPE ANY FINGERPRINTS FROM LAMPS WITH ALCOHOL.
(See steps 1-8 starting on page 6). Turn the system off. Unplug the unit from both
power sources. Open the bypass valve and close the isolation valves. Remove the
safety cover. Bleed any pressure from the system. Loosen the liquid tight gland and
remove the viewing cap. Lift the lamp out of the quartz sleeve without disconnecting it
from the wiring harness. Once the bulb is completely free of the quartz sleeve it can be
safely disconnected from the wiring harness.
CAUTION
THE WIRING CONNECTOR FOR THE LAMP MUST BE INSTALLED ON THE LAMP
BEFORE IT IS LOWERED INTO THE QUARTZ SLEEVE OR DAMAGE TO THE
LAMP OR QUARTZ SLEEVE MAY OCCUR.
Place the four pin connector onto the lamp and lower the lamp all the way to the bottom
of the quartz sleeve. Screw the viewing cap onto the quick disconnect quartz sleeve
assembly and tighten the liquid tight gland.
UV MONITOR CALIBRATION
Operation
The UV monitor has been factory calibrated, however due to variations in water
conditions the monitor may require field calibration at initial startup or when lamps have
been replaced. Under normal operating conditions, the UV% monitor will display 1,
which represents 100% operation. Systems with the mJ/cm² meter will display 60. Any
monitor display greater than 70% or 45 mJ/cm² coincides with illumination of the green
LED located under the meter. When the UV% meter display falls below 70% or the
mJ/cm² meter falls below 45, the green LED will go out and the yellow LED will
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illuminate indicating the need for quartz sleeve and monitor window service, or bulb
replacement.
Calibration
In order to calibrate the UV monitor, the lamps must be fully warmed up by allowing
them to operate for at least 15 minutes. After the warm-up period, the display should
indicate 1 on the UV% meter which represents 100% or 60 on the mJ/cm² meter. If the
display does not indicate 100% on the UV% meter or 60 on the mJ/cm² meter, adjust
the span of the monitor with the lower white potentiometer knob on the back of the
monitor assembly until the display indicates 100% on the UV% meter or 60 on the
mJ/cm² meter. If span cannot be set, see Section Calibrating Sensors with Teflon
Shades.
Warning
Indicator
Adjustment
Span
Adjustment
Calibrating the Warning Indicator
In order to calibrate the UV monitor warning indicator, the lamps must be fully warmed
up by allowing them to operate for at least 15 minutes. After the warm-up period, the
display should indicate 1 which represents 100% on the UV% meter, or 60 on the
mJ/cm² meter. Using the span adjustment, adjust the meter so that the indicator is just
below 70% on the UV % meter, or 45 on the mJ/cm² meter. The green LED under the
meter should turn off and the yellow indicator should turn on. Adjust the span so that
the meter indicates just over 70% on the UV% meter, or 45 on the mJ/cm² meter. The
yellow LED should turn off and the green LED should turn on. If the warning indicator
needs adjustment, set the span adjustment to 70% on the UV % meter, or 45 on the
mJ/cm² meter and adjust the warning indicator with the upper potentiometer on the back
of the UV monitor until the yellow and green LED can be toggled back and forth at the
70%, or 45 mJ/cm² setting. The span adjustment can now be re-set to 100% on the
UV% meter, or 60 on the mJ/cm² meter. If the 70%, or 45 mJ/cm² warning level cannot
be set, see section Calibrating Monitor with Teflon Shades.
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CALIBRATING MONITOR WITH TEFLON SHADES
Cannot Reach 100% or 60 mJ/cm² on the Meter
This calibration step assumes that all lamps are illuminated and have been operating for
at least 15 minutes. Figure 3.1 and 3.2 show the unassembled parts of the UV
monitor. The monitor includes an o-ring, a quartz window, Teflon shade, and the
monitor. The monitor may be shipped with no Teflon shade in the assembly or up to 2
pieces of Teflon shade in the monitor assembly. If the monitor cannot be adjusted to
100% on the UV% meter, or 60 on the mJ/cm² meter, remove one or more pieces of the
Teflon shade.
Cannot adjust the Meter Down to 70% or 45 mJ/cm2
This calibration step assumes that all lamps are illuminated and have been operating for
at least 15 minutes. Figure 3.1 and 3.2 show the unassembled parts of the UV
monitor. The monitor includes an o-ring, quartz window, Teflon shade, and the monitor.
The monitor may be shipped with no Teflon shade in the assembly or up to 2 pieces of
Teflon shade in the assembly. If the monitor cannot be adjusted down to 70% on the
UV% meter or 45 on the mJ/cm² meter, add one or more pieces of the Teflon shade.
Figure 3.1
UV Monitor Assembly for Stainless Steel Units
O-ring
Quartz
window
Nut
Monitor
head
Optional
shade
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Figure 3.2
UV Monitor Assembly for PVC Units
Jaco
housing
O-ring
Optional
quartz
window
Nut
Monitor
head
Optional
shade
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REPLACING A BROKEN QUARTZ SLEEVE
Quick Disconnect Quartz Sleeve Assembly (QDCQSSTDA)
1 – QDCAP1PVC
QUICK DISCONNECT COMPRESSION CAP 1" PVC
1 - QDC316
QUICK DISCONNECT CONNECTOR 316SS
1 - QSSTD
QUARTZ SLEEVE STANDARD AMALGAM
3 - RCG1
RUBBER COMPRESSION GASKET 1"
RUBBER
COMPRESSION
GASKET 1”
UV Maintenance
QUICK DISCONNECT
CONNECTOR 316SS
Page 19 of 23
QUICK DISCONNECT
COMPRESSION CAP
1" PVC
QUARTZ SLEEVE
STANDARD AMALGAM
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Note: Rubber compression gasket is smooth on one end and has a raised parting line
on the other end. The smooth end is to be assembled on the quartz sleeve to fit inside
the Stainless Steel Quick Disconnect.
Smooth
d
Parting line
d
Apply silicone spray to the outside of open end of the quartz sleeve holding open end
down to avoid getting silicone inside the sleeve. Spray the inside and outside of the
gasket. Slide the compression gasket (parting line end first) over the sleeve until 3 1/8
inches of sleeve is exposed as shown below.
Parting line
UV Maintenance
Smooth
d
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Slide the Stainless Steel Quick Disconnect over the sleeve and gasket. Use the
compression cap upside down to seat the gasket into the Quick Disconnect.
Slide the compression cap off. Slide it back over the sleeve in the proper orientation and
screw it onto the Quick Disconnect.
Apply silicone spray to the inside and outside of the second gasket. Slide the gasket
(smooth end first) over the sleeve and gently work the gasket into the quick disconnect.
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Gasket will extend over the sleeve
about 1/16” in the finished
bl
Add this third gasket if there is a spring support for the quartz sleeve to rest in.
Slide third gasket over the closed/domed end of the sleeve.
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