Arch hth easiflo 1 75876 User manual

Operator’s Manual
for the UK and Ireland
Model 75876
10/13/03
Rev. 2
Supplier Contact:
Arch Chemicals Ltd
Wheldon Road
Castleford
West Yorkshire
WF10 2JT
01977 714100

1
Product Stewardship
MAKING THE WORLD A BETTER PLACE
Arch is committed to maintaining and improving our leadership in Product
Stewardship. One of the six initiatives outlined under the Chemical
Manufacturers Association (CMA) Responsible Care®Program, its purpose is
to make health, safety, and environmental protection an integral part of a
product’s life cycle – from manufacture, marketing, and distribution to use,
recycling, and disposal.
Successful implementation is therefore, a shared responsibility. Everyone
involved with the product has responsibilities to address society’s interest in a
healthy environment and in products that can be used safely. We are each
responsible for providing a safe workplace, and all who use and handle products
must follow safe and environmentally sound practices.
For more information about our Product Stewardship Program, contact your
Arch Representative.

THE MAJOR
COMPONENTS -
HOW THEY WORK
General Principles of Operation
The three main components of the Easiflo1
Chlorinator are (from top to bottom) the briquette
Hopper, the Dissolving Cup section and the
Discharge Tank. The water from the pool enters
the Easiflo1 Chlorinator via the emergency
shutoff valve. The water then enters the base of
the Dissolving Cup where it splits to feed the
nozzles for generating the wave to penetrate into
the Briquette bed and the solids removal system.
The chlorinated solution is directed by a single
outlet spout to a channel that directs the solids
and chlorinated solution into the discharge tank
where it is discharged into the pool recirculation
system. The amount of chlorine discharged is
determined by the flow rate into the chlorinator. An
ORP controller can be used to regulate chlorinator
output by installing a solenoid on the inlet flow line.
An inlet water pressure of 2 to 20 psi (0.13 – 1.3 bar)
will provide sufficient flow into the Easiflo1.
These pressures will result in an inlet flow rate of
0.75lt/min - 4 lt/min. The Easilfo1 feed rate settings
referred to in the Easiflo System Owners manual are
calibrated for these flow rates.
Flow out of the Easiflo1 feeder requires vacuum to
properly evacuate the discharge tank. A minimum
outlet flow-rate of 4 litres per minute ensures that
the outlet flow of the Easiflo1 exceeds the flow in.
Once the Easiflo1 has been installed the outlet
flow is measured by watching the level in the
Discharge Tank. If the water level is rising as the
feeder is running, the outlet flow out is insufficient.
SPECIFICATIONS – Model 75876
Operational Requirements
Dimensions:
Feed Rate
Inlet pressure (Range)
2-20 psi
Tubing
1/2” O.D.
Polyethylene
Easiflo Briquettes
0.22 – 12.7kg of
Available Chlorine
per day
Ideal Inlet Pressure
12 psi
Chlorinator dimensions
W13”xD15””
Outlet vacuum
3-29” Hg.
Chlorinator height
31”
Operating Temperature
4 - 55ºC
Chlorinator weight (full)
19kg
Operational Characteristics
Chlorinator weight (empty)
7.7kg
Inlet flow (gpm)
0.75lt – 4lt min
Hopper Capacity
12.7kg Easiflo®
Briquettes
Outlet flow (Min)
0.92lt/min
Briquette
Hopper
Discharge
Tank
Outlet:
Discharge
Valve
Dissolving
Cup
Emergency
Shut-off
Valve

2
PRE-START-UP CHECKLIST
Following the procedure outlined below will ensure a
smooth start-up of the Easiflo 1 Chlorinator. For
seasonal operation, perform this procedure each
spring.
IMPORTANT!!
Do NOT put Easiflo®Briquettes in the
chlorinator during the start-up
operation.
INLET WATER FLOW
The inlet water flow system is designed to provide a
steady side-stream of clean filtered pool water to the
chlorinator.
1. Switch on the pool recirculation system, and open
all valves to the chlorinator. Leave lid closed.
2. Adjust Inlet flow on flow indicator to 1.5lt/min.
Wait 10 seconds and open lid slowly.
3. Check to see that the wave nozzle is making a
wave that rises into the Briquette grid. Remove the
grid to see if water is flowing from the Solids
Removal Nozzle.
4. Check all lines leading to the Chlorinator for leaks.
Hand tighten all fittings if any leaks are found.
OUTLET WATER FLOW
The float on the Discharge Valve rises with the water
level and allows the venturi suction to draw the
chlorinated water into the pool recirculation system as
the Discharge Tank fills with water. When the water
level drops, the float falls, shutting off the valve. The
Discharge Valve also contains a check valve to prevent
pool water from backing up into the Discharge Tank.
Use the following procedure to ensure that the outlet
water flow system is operating properly.
1. With the briquette hopper and dissolving cup of the
chlorinator temporarily out of the way, fill the
Discharge Tank with sufficient water to open the
Discharge Valve – use a hose or pail.
2. The float should rise, opening the Discharge Valve,
allowing water to be drawn out by the Easiflo®
venturi system.
3. Check the system for leaks. If small air bubbles are
visibly moving, there may be an air leak. Tighten
the connectors and make sure that the tubing was
properly installed in the fittings. (NOTE: Air bubbles
near the Easiflo1 Chlorinator body that do not
move are normal and do not indicate leaks.)
4. Check for air leaks after the Discharge Valve
closes.
Dissolving
Cup
Wave
Nozzle
Emergency
Shut Off
Float
Discharge
Valve
Discharge
Float
Hopper
Lid
Removable
Briquette
Grid
Solids
Removal
Nozzle
Inlet Flow
Outlet Flow
to Venturi
Briquette
Hopper

3
START-UP PROCEDURES
After completing the PRE-START-UP CHECKLIST, and
establishing that all components of the chlorinator are
operating properly, your Easiflo® 1 Chlorinator is ready
for start-up.
Routine maintenance of the Easiflo®1 Chlorinator is
minimized when proper pool water balance is
maintained. Maintain pool water chemistry as follows:
Total Alkalinity 60-80ppm
Calcium Hardness 200-1800ppm
PH 7.2-7.6
Adherence to these recommendations at all times will
ensure the most effective and economical performance
from the Easiflo®1 Chlorinator.
NOTE: The use of CO2 to lower pH will raise Total
Alkalinity. High total alkalinity (over 80 ppm) will
increase scale and solids buildup in chlorinator.
WARNING
Use ONLY Easiflo®Briquettes in the Chlorinator. The
use of any other treatment chemicals will void the
warranty. DANGER: Under no circumstances mix
calcium hypochlorite with other forms of concentrated
chlorine or other chemicals. Fire and/or explosion may
result. Caution must be used when refilling dispenser.
KEEP OUT OF REACH OF CHILDREN
Output Rate and Start-up Settings for
Commercial Pools and Spas Vs. Inlet
Flow Rates
1. Fill the Briquette Hopper with Easiflo®Briquettes.
The Briquette Hopper holds 12.7kg of briquettes.
2. Open all valves to the pool and the outlet ball valve
of the chlorinator.
3. Check the chart below to determine an
approximate start-up Inlet Flow setting for your
pool (or be certain that the Auto Controller is
calibrated and the set-points are correct). Set the
Flow Indicator at the recommended setting using
the inlet ball valve. Note: For best chlorinator
performance with an ORP controller, set the flow
indicator for a pool 30% larger than the one at your
facility. This will assist in maintaining desired Free
Available chlorine level in pool without
overshooting ORP set point.
4. Monitor the water flow to the chlorinator daily to
ensure that a proper flow is being maintained.
5. During the first few days of operation, check
chlorine level in the pool frequently to establish the
best Inlet Flow setting (or Auto Controller setting)
for your pool. Adjust the chlorine output either up
or down according to the table, or adjust the
chlorine setpoint.
Inlet Flow Rate lt / min
Av Cl kg / day
Indoor or stabilised
pool (M3)
Outdoor pool
unstabilised (M3)
0.75
0.22
19
4.7
0.95
0.72
60
15
1.14
1.00
83
21
1.33
1.50
125
30
1.5
2.00
170
42
1.7
2.50
208
52
1.9
3.10
265
83
2.08
3.40
290
102
2.27
3.80
320
117
2.46
4.00
350
125
2.65
4.40
380
133
2.83
4.70
410
148
3.02
5.20
450
161
3.21
6.00
500
180
3.4
6.50
540
199
3.6
6.80
575
217
3.8
7.00
600
236

4
EASIFLO 1 CHLORINATOR INSPECTION AND MAINTENANCE
Calcium Hypochlorite by the nature of its manufacture contains a small amount of calcium carbonate. Proper water
balance will minimize the buildup of calcium carbonate solids in the EASIFLO 1 Chlorinator, however, periodic
cleaning of chlorinator components is normal and recommended. The following is a list of the parts to be cleaned
and the proper procedures to do so.
TABLE OF CONTENTS
Suggested
Inspection
Frequency
Section
Contents
As Needed
Section A:
Use of Hydrochloric Acid to remove solids and scale from the Easiflo 1
Chlorinator
As Needed
Section B
Troubleshooting Guide
SECTION A
Cleaning EASIFLO 1 Chlorinator with Hydrochloric Acid
Perform cleaning operation in a well ventilated area. Chlorine gas may evolve causing serious injury or
possible death. Use proper protective equipment per MSDS when handling chemicals. Use caution when
handling feeder parts and solution as they contain chlorine that can bleach clothing or cause injury
Inspection: The solids build-up and cleaning frequency required for the unit will depend on the amount of tablets used
and the pool water chemistry. Described below is the easiest way to remove solids and minor scale buildup using
dilute Hydrochloric Acid.
Maintenance Procedure Steps:
1. Note the inlet flow setting. Close the inlet and
outlet shutoff valves to the chlorinator.
2. Lift the Briquette Hopper away from the Discharge
Tank and pour the contents into a clean dry bucket.
Be sure to remove all pieces of briquettes. If
necessary, rinse any heavy solids buildup from the
hopper before proceeding.
3. Lift out dissolving cup, pour contents into a bucket
and rinse out solids.
4. Remove briquette grid and place in cup (provided
with system). Fill with 0.25 litres of water. Slowly
pour 0.25 litres of prepared 10 parts water to 1 part
acid into cup. Pour 5 litres of water and 1/2litre of
acid solution into discharge tank. Frequent
agitation may be required to dissolve solids and
scale. Allow acid to dissolve solids and scale,
evident by the foaming action. After 10 to 20
minutes, check for presence of scale on grid. If
necessary, add additional acid solution to dissolve
any remaining scale or scrape with putty knife.
5. Replace the Dissolving Cup in Base.
6. Pour the contents from the cup with grid into
dissolving cup and allow 10 minutes for scale to
dissolve.
7. Put the hopper back on the base and the Briquette
grid back into the bottom of the hopper. Rinse the
Briquette grid thoroughly with water.
8. Pour Easiflo®Briquettes from bucket back into
Briquette Tank.
9. Open inlet and outlet shut off valves to the
chlorinator. Adjust inlet flow to desired setting.
10. Dispose of chlorinated solution from step 2 either
into pool or skimmer.
NOTE: To increase the period between cleanings,
allow briquette hopper to completely empty once per
week.

5
SECTION B
TROUBLESHOOTER’S GUIDE
PROBLEM
CAUSE
SOLUTION
Insufficient water flow to
chlorinator
Check water flow through nozzles. If there is scale
build-up perform de-scale operation
Rinse out dissolving cup, soak in a 2 parts water to 1
part hydrochloric acid and allow scale to dissolve.
Inlet Shutoff Valve closed
Open Inlet Shutoff Valve
Emergency Shut Off Valve in closed position
If ESV Valve is stuck, lower gently to reset
Solenoid Valve not operating (auto control system
only)
Check with Dealer
Insufficient chlorine in pool
Feed rate/output too low
Increase feed rate by increasing inlet flow.
Chlorinator empty
Refill Briquette Hopper with Easiflo®Briquettes
No inlet water flow
See insufficient water flow section
Outlet/Shutoff Valve closed
Open Outlet Shutoff Valve
Clogged Discharge Tubing
Refer to Section A or Replace discharge tubing
Briquettes stuck together
Tap side of Briquette Tank to loosen
Clogged Briquette Tank Grid
Refer to Section A
Clogged Venturi System
Remove venturi – soak in tub with mixture of 10 parts
water and 1 part hydrochloric acid solution.
Closed valves in venturi system
Open venturi system valves
Excess chlorine in pool
Automatic Controller Problem
Refer to automatic controller manual
Feed rate/output too high
Decrease feed rate by reducing inlet flow
Air leaks
Discharge Tubing not properly installed in fittings
Reinstall Discharge Tubing
Discharge Valve seat failure
Replace Discharge Valve Arm.
Scale prevents Discharge Valve from properly
seating
Remove Discharge Valve Assembly and soak in
solution of 2 parts water to 1 part hydrochloric acid to
remove scale
Pinched O-rings in Tubing Connectors
Inspect O-rings on discharge side of feeder
Chlorinator overflow
Discharge Tubing clogged
Refer to Section A or Replace Discharge tubing.
Clogged venturi system
See clogged venturi system solution
Insufficient outlet suction
Check with Dealer
Emergency shutoff valve failure
Check with Dealer
WARRANTY POLICY
The Easiflo Chlorine Feeder comes with a 12 month warranty from the date of installation. In order for the warranty to be validated
the Warranty Registration Document W2 must be completed and returned to Arch Water Products, Wheldon Road, Castleford WF10
2JT