Readying The Unit For Dosing; Filling Pump Hoses Using The Rapid-Action Suction Key; Adjusting The Flow Rate - Siemens Wallace & Tiernan Chem-Ad VPP Instruction Manual

5.
Operation
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Chem-Ad VPP and
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Chem-Ad VPP-DC
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Chem-Ad VPP-E
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Chem-Ad VPP-E
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Chem-Ad VPP and
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Chem-Ad VPP-E
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Chem-Ad VPP-DC
72
5.2

Readying the unit for dosing

Dosing is switched on and off in the Chem-Ad
®
Ad VPP-DC models via the supply voltage.
The green LED blinks once the supply voltage is applied
the key to ready the unit for dosing. The green light
flashing. Dosing proceeds according to the set operating mode
(see chapter 4.1.5).
5.3 Filling pump hoses using the rapid-action
suction key
®
In the Chem-Ad
can be pressed to quickly fill the hoses until the hose is filled with
the pumping medium (e.g., after a hose has been replaced or if the
unit is recommissioned).
5.4

Adjusting the flow rate

You can set the flow rate using the potentiometer in the Chem-Ad
VPP and Chem-Ad
only possible in operating mode 1 (jumper 1 or 3).
Procedure:
1 Remove the front housing cover and the electronic housing
cover (example: figure Chem-Ad
2 Set the desired flow rate 1 – 10 (10 – 100%) on the
potentiometer.
®
In the Chem-Ad
chapter 3.4).
Chem-Ad ® VPP / VPP-E / VPP-DC
VPP-E model, the rapid-action suction key
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VPP-E models. In Chem-Ad
®
VPP-E).
VPP-DC, the flow rate cannot be set (see
WT.490.250.000.DM.IM.0911
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VPP and Chem-
. Press
stops
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®
VPP-E, this is