EcoWater CHC Series, Service And Troubleshooting Manual

Page: 80 / 130

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Flow
Meter
Corrosion Coupon Rack
Isolation Valve
Isolation Valve
Coupon Holder Rod
Rod Nut
Holder Rod
Holder Rod with Coupon
To install the Corrosion Coupons follow these steps:
1. Acquire the coupons, the configuration of coupons will depend upon the type of cooling system
you are using. Refer to the statement on the first page of this document.
2. When placing coupons, the Copper coupon will be first coupon that the water will come in
contact with and the Scale coupon will be the last.
3. Turn off the two isolation valves at the rack to stop all water flow.
4. Loosen the nut securing the coupon holder.
5. Remove the coupon holder rod from the coupon rack.
6. Remove the coupon installation screw from the coupon holder.
7. Place a coupon over the holder and secure with the installation screw.
8. Place the holder back into the rack so that the coupon is extended into the water flow tube in a
vertical position. Do not place the orientation of the coupon in a horizontal position, if
horizontal, the coupon can act like a shelf and support debris that maybe detrimental to your test
results.
9. Secure the holder into place by tightening the holder nut.
10. Open the rack’s isolation valves.
11. Verify that the flow across the coupons is between five and eight GPM as shown on the flow
meter.
12. Mark the coupon envelopes with the date of installation and place in a secure location for use
upon the completion of the testing.
Removing the Corrosion Coupons
1. Turn off the isolation valves at the rack to stop all water flow.
2. Loosen and remove the holder nuts.
3. Slide out the holders, exposing the coupons.
4. Remove the coupon retention screws.
5. Remove the coupons, wipe them clean with a damp cloth.
6. Place each coupon back in its original envelope.
7. Place the retention screws back into the coupon holder rods.
8. Slide the coupon holder rods back into the rack.
9. Secure all rods by tightening their corresponding nuts.
10. Open the isolation valves and make sure no leaks are present.