GDS-15-PH 0519
18
6. POST-CLEANING (NEUTRALIZING, SHUTTING
DOWN, STORAGE)
Neutralizing the Descaling Solution
1.
WARNING:
Do not dump low pH solution into sink or drains! Solution must
be neutralized first! Typical minimum allowable pH is 5.5 to be able to be
dumped into normal drains. Check with local, state and federal laws regarding
the dumping of used descaling solution.
2.
Goodway’s ScaleBreak® may be neutralized with an acid neutralizing agent
(e.g. sodium carbonate/soda ash).
3.
Slide
pH Controller Switch
to
“OFF”.
4.
Leave
Main Pump
Switch On (up position).
5.
Close
Valve #3
(Pump Output Valve) about ¾.
6.
Remove lid from
Venting Drum
. Be careful with the over-splash.
7.
SLOWLY
add the neutralizing agent to the
Venting Drum
. Monitor the pH
level – it should rise.
8.
Continue to add neutralizing agent until pH is at an acceptable level
(nominally 6.0 – 8.0).
IMPORTANT:
DO NOT ADD NEUTRALIZING AGENT TOO QUICKLY!!! Certain
reactions will cause severe foaming and overflow the venting drum.
SHUTTING DOWN
Once the descaling solution is neutralized:
1.
Close the valves on the hoses.
2.
Disconnect the hoses from the vessel. Leave the hoses attached to the
Descaling Unit.
3.
Drain the descaling solution into an appropriate container or down a wastewater
drain by opening
Valves #1
,
#2
,
and
#3
and the valves on the hoses.
4.
When done draining the unit, close all valves on the unit.
5.
Remove lid and fill Venting Drum with at least 10 gallons (37.8 L) of clean water.
6.
Place the
Chemical Pickup
Hose in a bucket of clean water (1/2 gallon min).
7.
Open
Valves #1, #2, and #3
and the valves on the hoses.
8.
Slide the
pH Controller Switch
to
“ON”
.
9.
When the Venting Drum is empty, turn the
pH Controller Switch
to
“OFF”
.
10.
The pump can be drained be removing the plug at the bottom of the pump
head. Access is from under unit, on the left side (same side as the
pH Sensor
)
11.
Remove the plug (
DO NOT LOSE!!
).
12.
When pump in drained,
replace plug.
13.
Close
Valves #1, #2, and #3
on
the unit.
14.
Disconnect the hoses.
15.
Follow steps for storage of
pH Sensor
.
Drain Plug
