Siemens Wallace & Tiernan Chem-Ad VPP, Instruction Manual

Page: 57 / 136

Chem-Ad
®
VPP / VPP-E / VPP-DC
Description
3.
57
English
3.3.1 Required accessories
Capacity kit The dosing capacity kit is a pump hose pre-assembled on a hose
clamp.
Not included in the peristaltic metering pump scope of supply!
3.3.2 Optional accessories
• Suction lance
• Bottom priming valve
• Applicator
• Flow check unit
• Hoses
Please note
Please find order numbers in chapter 8.3.
3.4 Functions
Chem-Ad
®
VPP • Configurable flow rate (0 – 100 % via interior potentiometer
behind the electronic housing cover)
• Control by switching the supply voltage on and off (AC 230 V
or AC/DC 24 V)
Chem-Ad
®
VPP-E • Configurable flow rate (0 – 100 % via interior potentiometer
behind the electronic housing cover)
• Two operating modes are available for control:
-
External release of dosing function via isolated input
(mode 1)
or
- External analog signal 4 – 20 mA (mode 2)
• Rapid-action suction key for fast hose filling
• Fault message if an error occurs (e.g., suction lance (optional)
electrical or float valve switches).
• Voltage-free relay contact output (changeover contact) for
"error" or "empty" alarms (e.g., to connect an external warning
device
• Suction lance interface option with empty signaling contact
Chem-Ad
®
VPP-DC • Control by switching the supply voltage on and off (12 A– 24 V
DC)