Sani king Perform-Max 920 User manual

1
Customer Service 800-222-0169
kingtechnology.com
Perform-Max
Pool Sanitizer
Instruction Manual
CHLORINE/BROMINE FEEDER
for Pools up to 50,000 Gallons
Model 940
for pools up to
50,000 gallons
To minimize the risk of serious injury, death or
damage, before installing or first using this
equipment, read Instruction Manual and all safety
labels and follow all safety instructions and
precautions. Save manual for future reference.
WARNING
Ver la versión en español de este manual en kingtechnology.com/brands/sani-king
Model 920
for pools up to
25,000 gallons

2
TABLE OF CONTENTS
Perform-Max Introduction 3
Notes and Safety Information 4
Safety Labels on Feeder 5
Installation Tips to Ensure Proper Performance 6
Filter Flex-Hose Installation Model 920 7
Base Flex-Hose Installation Model 920 8
Hard-Plumbed Installation Model 920 9
In-Line Installation Model 940 10
In-line Installation Model 980 for 1½” Plumbing 10
Off-Line Installation Model 960 11-12
Step 1: Preparing the Pool 13-14
Step 2: Putting the Feeder to Work 15
Step 3: Setting the Control Dial 16
Step 4: Routine Pool Care 17
Winterizing 18
Troubleshooting 19
Parts List 920 20
Parts List 940, 960 and 980 21
Maintenance - Replacing Control Dial O-Rings 22
Maintenance - Replacing Cap O-Rings and Knobs 23
Warranty 24
For information on King Technology’s entire product
line, visit our website at kingtechnology.com

3
Thank you for choosing the Perform-Max Pool Sanitizer for your pool.
Perform-Max precisely meters chlorine at a consistent rate so you are
ensured of a properly sanitized pool with less work and more time to
enjoy. There are four models to choose from:
Model 920
In-line for pools up to
25,000 gallons using
chlorine and up to
15,000 gallons using
bromine.
Product # 01-05-0920
Model 940
In-line for pools up to
50,000 gallons using
chlorine and up to
25,000 gallons using
bromine.
Product # 01-05-0940
Model 980
In-line for pools using
1 ½” plumbing. For use on
the same pool sizes as the
Model 940.
PRODUCT # 01-05-0980
Model 960
Off-line for pools up to
50,000 gallons using
chlorine and up to
20,000 gallons using
bromine.
Product # 01-05-0960
17"
2" I.D .
(Female
Threaded
7"
15 1/4"
1 1/2" i.d.
7 3/16"

4
General Notes
These instructions contain information for the safe and proper
operation of this Perform-Max Feeder. Observe the following
principles:
• Ensure that everyone using this Perform-Max Feeder
follows the instructions and safety precautions.
• Keep the instructions nearby and available for reference
throughout the service life of this Perform-Max Feeder.
Explanation of the safety pictographs
The following pictographs illustrate the type and source of
a hazard.
Identication of warnings
Warnings are intended to help you recognize risks and avoid
death, injury or property damage. This is how warnings are identied:
Signal Word
Pictographs
Description of danger.
Consequences if ignored.
a The arrow signals a safety precaution to be taken to
eliminate or reduce the risk.
These instructions do not provide for every possible contingency
that might be encountered in connection with installation, opera-
tion or maintenance of this equipment. Should further informa-
tion be desired or should particular issues arise which are not
covered sufciently in this manual, contact King Technology at
800-222-0169.
Notes and Safety Information
Signal Word Meaning
DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death, serious injury
or major property damage.
WARNING Indicates a hazardous situation which, if not avoided, could result in serious injury, death, or major
property damage.
NOTICE
NOTICE Indicates special instructions that are important but not related to physical injury hazards.
Explanation of the signal words
Signal words, which depict the probability and severity of harm, are used in these instructions. They are dened as follows:
Pictograph Type of Danger
Safety Alert/General Hazard
Explosion Risk
Hazardous Pressure
Flammable Fire Hazard

5
Fire, explosion and high pressure hazards
To minimize the risk of serious injury, death or property damage while using the Perform-Max Feeder:
a Read, understand and follow all instructions and safety precautions in the manual, and on this Perform-Max Feeder and on any label
for chemicals used with this Perform-Max Feeder.
DANGER
a Never use fast dissolving chlorine tablets, liquid bleach, or calcium hypochlorite in the Perform-Max Feeder.
a Never mix Trichlor chlorine tablets with Calcium Hypochlorite, or with any other form of concentrated chlorine or other chemicals.
a Never add any other types of chlorine, pH adjusters, shock treatments or algaecides through the skimmer.
These products should be added directly into the pool if required.
a Do not contaminate the Perform-Max Feeder with dirt, organic matter, pool chemicals (such as calcium hypochlorite or pool shocks),
fertilizers or other household chemicals. Contact between any of these substances and the Perform-Max Feeder will result in a chemical
reaction with the generation of heat, liberation of hazardous gasses and re or explosion.
WARNING
a Use only slow dissolving trichlor tablets or pucks or bromine tablets in the Perform-Max Feeder.
a To prevent the build up of gas pressure in the Perform-Max Feeder, be sure the pool return line valves are open –
except when opening or servicing the unit.
a Do not inhale fumes from the Perform-Max Feeder.
a Avoid sparks, smoking, or any open ame near Perform-Max Feeder or chemicals.
a Do not exceed maximum operating pressure of 50 psi or maximum temperature of 104ºF.
a Do not remove the cap while under pressure. Always turn off pump and bleed off pressure before opening Perform-Max Feeder.
a Do not install automatic or fast shut off valves downstream of Perform-Max Feeder.
a Always install the Perform-Max Feeder AFTER a heater (if applicable) on the return line.
a Always install any additional sanitizing equipment AFTER and NEVER BEFORE the Perform-Max Feeder is installed on the return line.
a Do not permit children to use or climb on this product. This product must be positioned to prevent children from using it as a
means of access to the pool.
a Always stand clear of the Perform-Max Feeder during pump start-up.
a Replace Perform-Max Feeder if you see signs of cracks, damage or degradation to the Perform-Max Feeder body or cap.
NOTICE
NOTICE
a Prior to pressurizing, check with your dealer to ensure your plumbing connections meet building codes.
a Failure to properly winterize your Perform-Max Feeder could result in freeze damage. (See page 18 for winterizing details.)
Review this label before installing or operating this Feeder. Contact King Technology at 800-222-0169 if this label is missing from your Perform-Max.
Safety Label on Perform-Max Feeder

6
POOL WATER LEVEL
9
9
9
9
99
9
9
9
PUMP
1
3
4
5
6
7
9
B
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P
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2
T
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H
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MIN
MAX
8
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P
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P
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M
A
B. With In-Floor Cleaner - TWO OPTIONS

PUMP



PUMP
Flow
Flow
HEATER
1
3
4
5
6
7
9
B
R
O
M
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P
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2
T
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MIN
MAX
8
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P
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P
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A
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S
M
A
The best option is to have two lines. One line with pump, lter, heater
and Perform-Max Feeder and a second line with a separate pump for the
in-oor cleaning system (lter optional).
OPTION 1- A Two-Line Installation
OPTION 2 - A 3-Way Valve Installation
POOL WATER LEVEL
POOL WATER LEVEL
POOL RETURN
3-way manual valve or 3-way motor valve plus controls
Perform-Max
Feeder
Perform-Max
Feeder
IN-FLOOR
CLEANER VALVE
IN-FLOOR
CLEANER VALVE
Line 1
Line 2
A. With High Flow Rate (greater than 80 gpm)
Install T-ttings exactly as shown.
TO POOL
Perform-Max
Feeder
CHECK
VALVE
SUCTION
FROM
POOL/SPA
C. Pool and Spillover Spa Combination
TO POOL
TO SPA
3-WAY VALVE
Perform-Max
Feeder
CHECK VALVE
PUMP
SUCTION
FROM
POOL/SPA
Installation Tips to Ensure Proper Performance
WARNING
• Do not exceed maximum operating pressure of 50 psi.
• Do not install automatic or fast shut off valves
downstream of feeder.
• Always install the Perform-Max Feeder AFTER the
heater (if applicable) on the return line.
• Always install any additional sanitizing equipment
AFTER and NEVER BEFORE the Perform-Max Feeder
is installed on the return line.
1) If using a multi-speed pump, run pump for at least
6 hours per day at high speed (at least 40 gpm).
If the pump will run on low speed 24 hours
per day or less than 6 hours per day on
high speed, you must bleed the air while
the pump is on by unscrewing the cap
knob until water appears. Then screw the
knob back on. Repeat this process each
time the cap is removed for any reason.
2) Install Perform-Max Feeder with
4-8 psi back pressure.
Lower back pressures could result in under
chlorination. Change the eyeball ttings in
the return jets to a smaller size to increase
back pressure. Contact King Technology
at 800-222-0169 for a specially designed
Perform-Max Feeder pressure gauge to
determine back pressure at pool start-up.
3) Special installation Requirements:
IMPORTANT: Over chlorination or damage to the Perform-
Max Feeder or other equipment could result if special
installations A, B or C are not used in these situations.
•If water ow is higher than 80 gallons per minute
(gpm), see diagram A.
•If an in-oor cleaner is included with pool,
see diagram B, with two options. Preferred
installation is Option 1 with two separate lines.
•If set-up is a pool and spa combination with
common equipment, see diagram C.
Questions? Call Customer Service at 800-222-0169
Monday thru Friday, 8 am to 5 pm central time.
PN #01-22-4000
Before installing, read all directions carefully and contact your dealer for installation support.

7
Screw adapter into the other
side of Perform-Max Feeder.
Hand tighten. Finish
tightening by turning
1 to 2 revolutions
with a pipe wrench.
DO NOT OVER TIGHTEN.
5.
TOOLS NEEDED
Screwdriver
Pipe Wrench
MATERIALS NEEDED
Pipe Thread Tape
or Sealant
One 6” x 1½” TBE PVC
Nipple
One Hose Adapter
1½” X 1½” X 1¼”
One Section of
1½” or 1¼” Flex Hose
(provided with lter)
One
Hose Clamp
RECOMMENDED
4-8 psi Back Pressure
To avoid over or under
chlorination, replace eyeball
ttings in the return jets to a
smaller or larger size to adjust
back pressure. For best results
use King Technology’s pressure
gauge, order part number
01-22-4000.
Filter Flex-Hose Installation - Model 920
Apply pipe thread tape or sealant
to each threaded end of nipple.
Screw one end of nipple
into the lter return.
Hand tighten. Finish tightening
by turning 1 to 2 revolutions
with a pipe wrench.
DO NOT OVER TIGHTEN.
Screw either side of
Perform-Max Feeder on
to open nipple end until
upright and secure.
Apply pipe thread tape or
sealant to threaded end of
hose adapter.
3.
4.
6.
Attach return section of hose to
the adapter with clamp. Tighten
clamp with screwdriver.
7.
To prevent damage to heaters
or lters, see your dealer about
installing a corrosion resistant
check valve which will reduce the
back ow of chlorine gas when
the Perform-Max Feeder is turned
off.
2.
1.
HOSE
ADAPTER
HOSE
ADAPTER
HOSE ADAPTER
Install

8
TO POOL
PUMP
FILTER
TOOLS NEEDED
Screwdriver
Pipe Wrench
MATERIALS NEEDED
Pipe Thread Tape
or Sealant
Two hose adapters
1½” X 1½” X 1¼”
Two Sections of 1½”
or 1¼” Flex Hose (one
provided with lter)
Two
Hose
Clamps
RECOMMENDED
4-8 psi Back Pressure
To avoid over or under
chlorination, replace eyeball
ttings in the return jets to a
smaller or larger size to adjust
back pressure. For best results
use King Technology’s pressure
gauge, order part number
01-22-4000.
Apply pipe thread tape or sealant
to the threaded end of both hose
adapters.
1.
Base Flex-Hose Installation - Model 920
Screw adapters into each end of Perform-
Max Feeder. Hand tighten. Finish tightening
by turning 1 to 2 revolutions with pipe
wrench. DO NOT OVER TIGHTEN.
2.
Attach the lter section of ex hose to one hose adapter
and the return section of ex hose to the other hose
adapter with clamps and tighten with screwdriver. Bi-
ow valve design allows water ow installation in either
direction.
3.
To prevent damage to heaters
or lters, install a corrosion
resistant check valve which will
reduce the back ow of chlorine
gas when the system is turned
off.
4.
For better stability, Perform-Max Feeder may be
mounted on a treated wood base using Phillips
pan head screws, one in front and two in back. If
you have questions about stability, please contact
your dealer or King Technology.
5.
CHECK
VALVE
BUSHING
HOSE
CLAMP
HOSE
ADAPTER HOSE
CLAMP
HOSE
ADAPTER
TO POOL
1 1/2" OR 1 1/4"
FLEX HOSE
1 1/2" x 1 1/2" x 1 1/4"
HOSE ADAPTER
HOSE
CLAMP
FILTER &
PUMP
The Perform-Max Feeder should always
be installed between the lter and pool (or
between heater and pool if applicable). Never
install Perform-Max Feeder before the heater
or damage to the heater could occur.

9
1½” Male Adapter
(slip x MPT)
or
2” Female
Adapter
(slip x FPT)
Hard-Plumbed Installation - Model 920
Do NOT install
Perform-Max Feeder
off-line.
Following Primer directions, brush Primer on the inside of the
adapters and to ends of pipe. Repeat this process with PVC
cement following directions on that product.
Measure the distance
between the outside
adapters and cut out a
section of pipe 3” less
than that dimension.
Allow a minimum of
12” above and on
each side of Perform-
Max Feeder to
ensure room for easy
chemical relling.
Insert PVC pipe into adapters with
a twisting action. Hold in place 5 to
10 seconds to bond.
TOOLS NEEDED
Hacksaw
MATERIALS NEEDED
Tape
Measure
SECURE SYSTEM
To prevent damage to heaters or
lters, install a corrosion resistant
check valve which will reduce the
back ow of chlorine gas when the
feeder is turned off.
2.
1a.
1.
1b.
3.
Pipe Wrench
Bi-ow valve design allows
installation in either ow
direction.
Pipe Thread Tape
or Sealant and Primer
and PVC Cement
If using male adapters, apply
pipe thread tape or sealant to the
threaded end of each adapter.
Screw adapters into each end of Perform-Max Feeder following
directions for a male adapter or a female adapter. Hand tighten.
Finish tightening by turning 1 to 2 revolutions with pipe wrench.
DO NOT OVER TIGHTEN.
4.
5.
The Perform-Max Feeder should always be installed between
the lter and pool (or between heater and pool if applicable).
Never install Perform-Max Feeder before the heater or
damage to the heater could occur.
Do NOT install in copper pipe as
chemical corrosion may lead to pipe
failure.
P
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For better stability, you
can order a mounting
base (part number
01-22-1485) that
screws on to the bottom
of the Perform-Max
Feeder. Then mount on
a treated wood base
using Phillips pan head
screws, one in front and
two in back.
P
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12"
12" 12"
If using female adapters, apply
pipe thread tape or sealant to the
threaded end of each feeder port.
OR
Install

10
12" to 15"
12"
to
15"
P
O
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S
A
N
I
T
I
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R
TOOLS NEEDED
Pipe Wrench
Hacksaw
Tape Measure
MATERIALS NEEDED
Pipe Thread
Sealant
Primer and
PVC Cement
Two 2” Threaded
x 2” or 1 ½” Slip
Male Adapters
(not Included)
1. 2.
In-line Installation - Model 940
OR
Do NOT install Perform-Max
Feeder off-line.
Bi-ow valve design allows
water ow in either direction.
Following pipe thread sealant
directions, brush sealant onto
Perform-Max Feeder threads
in both ports and both male
adapters.
DO NOT USE
PIPE THREAD TAPE
Screw a male adapter
into each port of Perform-Max
Feeder. Hand tighten.
Finish tightening by
turning 1 to 2
revolutions with
a pipe wrench.
DO NOT OVER TIGHTEN.
Insert PVC pipe into male
adapters with a twisting
action. Hold in place
5 to 10 seconds to bond.
To prevent damage to heaters
or lters, install a corrosion
resistant check valve which will
reduce the back ow of chlorine
gas when the feeder is turned off.
3.
4. 5.
6.
7.
Measure the distance between
Perform-Max Feeder male
adapters and cut out a section
of pipe 3” less than that
dimension.
Following Primer directions, brush
Primer on the inside of the male
adapters and to ends of pipe.
Repeat this process with PVC
cement following manufacturer’s
directions on that product.
Allow a minimum
of 12” above
and on each side
of Perform-Max
Feeder to ensure
room for easy
access.
PUMP
FILTER HEATER
(If
Installed)
*CHECK
VALVE
P
O
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S
A
N
I
T
I
Z
E
R
For better
stability,
Perform-Max
Feeder may
be mounted
on a treated
wood base
using Phillips
pan head screws, one in
front and one in back. If
you have questions about
stability, please contact your
dealer or King Technology.
Perform-Max 980
Use the 2” x 1 ½” threaded
bushing provided for steps
1 through 3.
Repeat steps 1 through
3 using a 1 ½” threaded
by 1 ½” slip bushing (you
provide). Then follow the
remaining inline installation
instructions.
2” x 1 ½”
Threaded
Bushing
1 ½”
Threaded
by 1 ½” Slip
Bushing
The Perform-Max Feeder should always be installed between the lter
and pool (or between heater and pool if applicable). Never install
Perform-Max Feeder before the heater or damage to the heater
could occur.
P
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P
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P
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Do NOT install in copper pipe
as chemical corrosion may
lead to pipe failure.

11
MATERIALS NEEDED
Pipe Thread
Sealant
Primer and
PVC Cement
OFF-LINE KIT
Included with the
Perform-Max Feeder
Two Male
Adapters
Two Reducer
Bushings
Two 90
Degree Elbows
Four Hose
Clamps
6’ of Tubing
Two
Scoops
Two Scoop
Gaskets
Two Scoop Clamps
TOOLS NEEDED
Screwdriver
Pipe Wrench
Battery
Operated Drill
with 5/8” or 19/32”
Bit
Off-line Installation - Model 960
Do NOT install Perform-Max
Feeder Model 960 in-line as this
Perform-Max Feeder is different
than an in-line unit.
1.
Bi-ow valve design allows installation in either ow direction.
Following Primer directions,
brush Primer on reducer
bushings and inside of male
adapters. Repeat this process
with PVC cement following
directions on that product.
Insert reducer bushing
into male adapter on both sides
with a twisting action. Hold in
place 5 to 10 seconds to bond.
Following pipe thread sealant
directions, brush sealant onto
elbow threads.
2.
3. 4. 5.
OR
P
O
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S
A
N
I
T
I
Z
E
R
Following pipe thread sealant
directions, brush sealant onto
Perform-Max Feeder threads
in both ports and on both
male adapters.
DO NOT USE PIPE THREAD
TAPE as the threads
on these units are
not suitable for
this use and
leaking or tting
failure could result.
Screw a male adapter
into each port of Perform-Max.
Feeder. Hand tighten. Finish
tightening by turning 1 to 2
revolutions with a pipe wrench.
DO NOT
OVER
TIGHTEN.
SCOOPS
2” – 36” APART
P
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P
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P
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n
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P
V
C
C
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n
t
The Perform-Max Feeder
should always be installed
between the lter and pool
(or between heater and pool
if applicable). Never install
Perform-Max Feeder before
the heater or damage to the
heater could occur.
Install

12
Screw elbow into reducer
bushings on both sides.
Cut tubing
to size
for each
Perform-
Max Feeder
connection
and attach
one to each
elbow with
clamps.
Tighten clamps
with a screwdriver.
When pipe is
totally dry, drill two
19/32” or 5/8”
holes, between
2” - 36” apart, on
the return line. Be
careful not to go
through other side
of pipe.
Attach a gasket to
each scoop.
Place scoops inside
holes so the inlet scoop
faces the water ow
and the outlet scoop
faces away from the
water ow. Scoop
arrows should be
facing each other when
correct.
2” – 36” apart on straight pipe
Arrows on scoops must face
each other.
Attach scoop clamps
over the scoops and
around the pipe.
Tighten scoop clamps
with a screwdriver.
Attach each hose to venturi
scoop male nipple with a
small clamp and tighten with
screwdriver.
6. 7. 8. 9.
10. 11. 12.
13. 14. 15.
16.
To prevent damage to heaters or lters, install a corrosion resistant check valve which
will reduce the back ow of chlorine gas when the feeder is turned off.
For better stability, Perform-
Max Feeder may be mounted
on a treated wood base using
Phillips pan head screws, one
in front and one in back. If you
have questions about stability,
please contact your dealer or
King Technology.
SCOOPS
2” – 36” APART
ON STRAIGHT PIPE

13
Step 1: Preparing the Pool
1. Make sure the pool has adequate
circulation. The total volume of pool
water must completely circulate
through the pump and lter at least
1 to 2 times per day. This usually
requires 8 to 12 hours of circulation.
Check with your dealer for the
proper circulation time for your pool.
2.
3.
5.
4.
Water Balance Guidelines
pH: 7.2 – 7.8
Total Alkalinity: 80 – 120 ppm
Calcium Hardness: 200 – 400
Total Dissolved Solids: <1500
Stabilizer: 20 – 80 ppm
Free Chlorine: 1.0 – 3.0 ppm
Check the pool’s lter gauge often
and periodically clean lter per
the manufacturer’s directions.
A dirty lter will slow the ow of
water which could hamper proper
circulation.
Check the Water Hardness of your ll water before
adding to the pool. If calcium content is higher than
400 ppm, nd a soft water source to ll your pool
instead; otherwise water balance will be very difcult.
Check for metals in the pool such
as iron or copper. Before attempting
water balance, these should be
removed. See your dealer for a metal
out or sequesterant and follow the
label directions carefully.
Before beginning with any pool care program, you
must rst balance your pool water. Take a water
sample to your local pool professional (or use a
complete test kit) to test for the important Water
Balance Guidelines.
IMPORTANT: Always follow printed instructions on
the balancing chemical packages. Add balancing
chemicals in small increments one at a time
with circulation running. For best results, wait
8-12 hours before testing again and adding any
additional balancing chemicals.
Metal
Out
WARNING
Do not exceed maximum operating
pressure of 50 psi.
Continue.....
Step 1: Preparing the Pool-page 14
Operate

14
Continue... Step 1: Preparing the Pool
5b. Look at the Total Alkalinity reading rst. Adjustments
should be made to bring the Total Alkalinity in the range of
80 – 120 ppm prior to making any adjustments to pH even if
it throws pH off further.
5c. After Total Alkalinity is in range, test for pH. It should be
between 7.2 and 7.8. If higher or lower, add a pH adjuster.
5d. Then test your Water Hardness again. If lower than 200
ppm, add Calcium Increaser. Always maintain 200-400 ppm.
5e. Lastly test for stabilizer or conditioner levels. Add
conditioner if the level is below 20 ppm. This will prevent
chlorine burn off. If stabilizer level is above 80 ppm, partially
drain water and re-ll.
6.
5a. Take a water sample
from the pool and dip a
test strip into it.
For best results in achieving water balance, follow
steps 5a through 5e in order.
6.2 6.8 7.2 7.8 8.4
LOW
BAJO
VERY LOW
MUY BAJO
HIGH
ALTO
pH
IDEAL
LOW
BAJO
VERY LOW
MUY BAJO
HIGH
ALTO
VERY HIGH
MUY ALTO
0 40 80 120 180 240
Total Alkalinity
(ppm)
Alcalinidad Total
(mg/L)
IDEAL
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Initially shock the pool with
a chlorine shock only to rid
the water of contaminants
and establish a chlorine
residual. Always follow the
manufacturer’s directions
carefully. See the DANGER
box below for important
guidance on shocking.
DANGER
• Never add any other types of chlorine, pH adjusters,
shock treatments or algaecides through the skimmer.
These products should be added directly into the
pool if required.
• Never use fast dissolving chlorine tablets, liquid
bleach, or calcium hypochlorite in the Perform-Max
Feeder.

15
DANGER
Never use fast dissolving chlorine tablets, liquid bleach,
or calcium hypochlorite in the Perform-Max Feeder.
Models 940, 960, 980 Model 920
Models 940, 960, 980
Open the cap. For Model 940/960/980 use the cap tool
included with feeder to loosen cap by hitting the handle with
the at of your hand counterclockwise. Stand back to allow any
chlorine fumes to dissipate.
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minimum
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DO NOT USE CAP TOOL TO
TIGHTEN CAP. FOR REMOVAL
ONLY
Fill unit to top with the recommended
chlorine OR bromine. DO NOT MIX
BROMINE AND CHLORINE. Do not
put small particles in feeder.
Replace cap by hand only. DO NOT OVER TIGHTEN.
Turn pump off. Turn dial
to Minimum or 0. This
reduces the ow of water
into the unit when the cap
is open
3.
4.
1.
2.
Models 940, 960, 980
Models 940, 960, 980
Model 920
Model 920
Operate Perform-Max Feeder until empty of all chemical. When
empty, set control dial to maximum or 10 and let run empty 24
hours.
Make sure all small particles
have dissolved and been ushed
out of feeder. Fill unit with new
chemical following steps 1-4
above.
DO NOT MIX BROMINE AND
CHLORINE. Do not put small
particles in feeder.
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7
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MAXIMUM
Changing Chemicals
(i.e. switching from chlorine to bromine)
Model 920
Step 2: Putting the Feeder to Work
WARNING
Avoid sparks, smoking, or any open ame near
Perform-Max Feeder or chemicals.
IMPORTANT: Read the label on the Perform-Max Feeder carefully
before using.
Operate

16
Step 3 - Setting Control Dial
1.
2.
3.
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When using slow dissolving trichlor, the Perform-Max Feeder should be operated based on its normal erosion design where only the bottom layer
of tablets are wetted. This provides better controllability and longer lasting sanitation per rell.
When using bromine, the Perform-Max Feeder should be operated as a soaking feeder as this chemical works best when all tablets are wetted.
Therefore bleeding the air on these units is recommended when using bromine.
For all pools using
CHLORINE......
For all pools using
BROMINE....
set the control dial at #4.
With bromine only, bleed
air from unit by partially
unscrewing back knob on
Model 920 or cap knob on
Models 940, 960 & 980 while
the pump is running until water
appears. Tighten knob.
For the rst week or so, test
the water daily for free chlorine
or bromine.
After day one, adjust the dial up by 1/2 increment if the
reading has dropped or down by 1/2 increment if the
reading has risen. Continue this process each day until the
reading stabilizes at your desired level between 1.0 and 3.0
ppm.
set the control dial at #2.
Remember to adjust dial by 1/2 increments only. Higher
than suggested settings could result in over chlorination
and/or bleached pool surfaces.
For Models 940, 960 & 980
use the handle end of cap tool
if the dial is hard to turn.
Models 940, 960, 980 Model 920
Models 940, 960, 980 Model 920
Models 940, 960, 980 Model 920
24 HOUR, LOW-SPEED PUMP RUN TIME
In order to ensure proper performance when running the pump on low speed for 24 hours per day or high speed less than 6 hours
per day, bleed the air while the pump is on by unscrewing the cap knob until water appears. Then screw the knob back on. Repeat
this process each time the cap is removed for any reason. Set the control dial at 6 and follow the adjustment directions in Step 3 to
determine the correct setting for your pool.

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Step 4: Routine Pool Care
Run ltration system enough hours
to circulate all water 1 to 2 times per
day. More than that could result in
over chlorination.
2.
3.
1. 4. Shock the pool every week or as
needed with a non-chlorine or
chlorine shock.
Regularly test water with test strips
to maintain pH and Total Alkalinity.
NOTE: Water balance is affected
by bather load, chemical usage,
evaporation and the makeup of
source water, so maintaining water
balance regularly is important.
Maintain 1.0 - 3.0 free chlorine or
2.0-3.0 ppm bromine at all times.
WARNING
To prevent the build up of gas pressure in the Perform-Max
Feeder, be sure the pool return line valves are open –except
when opening or servicing the unit.
DANGER
Do not contaminate the Perform-Max Feeder with
dirt, organic matter, pool chemicals (such as calcium
hypochlorite or pool shocks), fertilizers or other
household chemicals. Contact between any of these
substances and the Perform-Max Feeder, will result
in a chemical reaction with the generation of heat,
liberation of hazardous gasses and re or explosion.
DANGER
• Never add any other types of chlorine, pH adjusters,
shock treatments or algaecides through the skimmer.
These products should be added directly into the
pool if required.
• Never use fast dissolving chlorine tablets, liquid
bleach, or calcium hypochlorite in the Perform-Max
Feeder.
Operate

18
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2
minimum
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4.
Winterizing
Operate Perform-Max
Feeder until empty of
all chemical. When
empty, set control dial to
maximum or 10 and let
run empty for 24 hours.
Turn pump off and turn
dial to minimum or 0.
5
6
7
9
8
MAXIMUM
Model 920
Models 940, 960, 980
Models 940, 960, 980
Model 920
Models 940, 960, 980 Model 920
Models 940, 960, 980 Model 920
Unscrew knob in front of Model 920 and in back of
Models 940, 960, and 980. Allow all water to drain.
Replace the cap and knobs loosely.
WARNING
Avoid sparks, smoking, or any open ame near
Perform-Max Feeder.
1.
3.
5.
2.
Models 940, 960, 980 Model 920
Remove cap.

19
1.
3.
4.
5.
2.
Troubleshooting
1. Make sure your ltration
system is working properly (i.e.
clean lter, skimmer and pump
basket).
2. Make sure circulation time
is adequate – increase pump
time if not.
3. Make sure the pool is
properly balanced (see page 13).
4. Shock the water to eliminate
build up of any organic matter.
5. Make sure pool has a
free chlorine reading of
1.0 to 3.0 ppm.
6. Check with your dealer
for more information.
1. Algae may be trying to form
– shock the pool, increase
circulation time if needed and
clean the lter.
2. Metals in the ll water may
have been oxidized. Have the
pool tested. See pool dealer
if a metal control product is
required.
3. Check with your dealer for
more information.
1. Use an algaecide per the
directions on the bottle and
brush the sides of the pool
often.
2. Clean the lter and shock
the pool with chlorine daily
until water clarity returns.
3. Check with your dealer for
more information.
1. Make sure there are chlorine
tablets in the Perform-Max
Feeder. Consider using 1” tablets
over 3” pucks for greater output.
2. If reading dropped below 1.0
ppm, shock pool. Turn control
dial to minimum when shocking
and NEVER ADD SHOCK IN OR
NEAR THE SKIMMER. Reset dial
1/2 setting higher than before
and continue monitoring daily
until desired chemical level is
acheived.
3. Make sure pump run time is
at least 6 hours on high speed
(40 gpm or higher)
or if not,
bleed the air from the cap
knob each time cap is open.
4. Try bleeding the air, soaking
tablets for greater output.
5. Contact your dealer to have
your back pressure tested. If
under 4 psi consider a smaller
eye-ball tting in the return jet.
6. Check for a suction side leak
by looking for air bubbles in your
pump basket or at the return
jet. Contact dealer for help in
correcting this situation.
7. Contact King Technology’s
Customer Service Department
at 800-222-0169.
1. Turn dial to minimum or
0. When reading drops to
desired ppm, reset dial 1
setting lower than the starting
dial setting and continue
monitoring daily.
2. Consider switching 1 inch
tablets to 3 inch pucks for
less output.
3. If over-chlorinating at
the lowest possible setting,
consider decreasing the
circulation time. Depending
on your pump size, you may
be circulating the water more
than is necessary.
4. Contact your dealer to have
your back pressure tested. If
over 8 psi consider a larger
eye-ball tting in the return jet.
5. Check to see if the pressure
relief valve is loose or missing
and replace. It is a clear plastic
piece approximately 1” long
installed inside near the base. If
loose or missing, it can provide
another avenue for water to
reach the chlorine.
6. Contact King Technology’s
Customer Service Department
at 800-222-0169.
What do I do
if I am over
chlorinating?
What do I do
if I am under
chlorinating?
What do I do
if algae forms in or
on my pool?
What do I do
if the water turns
color?
What do I do
if the water looks
cloudy?
Problem Remedy
For help troubleshooting, call King Technology at 800-222-0169.
Troubleshoot

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Parts List • Model 920
Included with Model 920
REF. # DESCRIPTION QTY. INCLUDED
1 & 2 Cap w/O-Ring 1
3 Body 1
4 Pressure Relief Valve 1
5, 6, 7, 8 Control Dial with O-Rings
Locking Pin and Number Plate 1
9 & 10 Knob with O-Ring 2
11 Screen 1
13 Silicone Lubricant 1
Replacement Parts for Model 920
REF. # PART NO. DESCRIPTION
1 & 2 01-22-1418 Cap w/O-Ring
2 01-22-1926 Cap O-Ring
4 01-22-9486 Pressure Relief Valve
5, 6, 7, 8 01-22-1446 Control Dial with O-Rings
& Locking Pin, Number Plate
6 01-22-1456 Control Dial O-Ring Set
9 & 10 01-22-9946 Knob with O-Ring
11 01-22-9666 Screen
12 01-22-1485 Mounting Base
13 01-22-9970 Silicone Lubricant
14 01-22-1710 Nipple Kit
15 01-22-4000 Pressure Gauge
16 01-22-1470 25k Tune-Up Kit
Optional part- not included
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