Dosing unit GRANUDOS Type Flex-CPR Touch XL,
Type Flex-Touch and Type Flex-S5
Index: 01 Change date: 11/10/2023
OI No.: BA SW 022-01 Granudos Flex Dosiereinheit EN.docx
Page 40 of 68
5.2.2
Preparing acid dosing for operation
DANGER DUE TO CORROSIVE SUBSTANCES!
Toxic fumes may occur when handling acids. Do not inhale any fumes.
Personal safety equipment must be put on before starting work with chemicals: Protective
gloves, apron, face protection, foot protection.
Pay attention to the specifications for each chemical listed in the safety data sheets, e.g.,
protective clothing.
TIP!
As a rule, sulphuric acid is used to regulate the pH Value. However, in special cases, e.g., if
the water is very hard and/or has a high pH value and/or a high dosing performance is re-
quired, it is recommended to use hydrochloric acid instead of sulphuric acid. This prevents
the potential formation of gypsum residue due to high sulphate concentrations in particular
when using the buffer tank option.
With a hydrochloric acid concentration of more than 10%, a Viton hose must be used in the
peristaltic pump! This is resistant to a maximum concentration of 33% and must be replaced
every 6 months!
Connect/change acid canister
a)
Do not bring the acid into contact with other chemicals!
b)
Unscrew the red screw cap with the suction lance from the empty acid canister, place the
suction lance in the collecting tub, and immediately close the empty canister with the original
screw cap.
c)
Lift the empty canister out of the collecting tub.
d)
Place the full acid canister into the collecting tub.
e)
Unscrew the screw cap from the full acid canister, immediately insert the suction lance into
the canister and close it securely with the red screw cap.
f)
Store the acid canister’s original screw cap until the next time the canister is changed.
5.2.3
Preparing flocculant dosing for operation (only CPR Touch XL)
Personal safety equipment must be put on before starting work with chemicals: Protective
gloves, apron, face protection, foot protection.
Please pay attention to the chemicals manufacturers’ safety data sheets!
Connect/change flocculant canister
Do not bring the flocculant into contact with other chemicals!
Procedure
a)
Unscrew the blue screw cap with the suction lance from the empty flocculant canister, place
the suction lance in the collecting tub, and immediately close the empty canister with the orig-
inal screw cap.
b)
Lift the empty canister out of the collecting tub.
c)
Place the full flocculant canister into the collecting tub
d)
Unscrew the screw cap from the full flocculant canister, immediately insert the suction lance
into the canister and close it securely with the blue screw cap.
e)
Store the flocculant canister’s original screw cap until the next time the canister is changed.
Summary of Contents for GRANUDOS Flex-CPR Touch XL
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