Siemens Wallace & Tiernan Chem-Ad VPP, Instruction Manual

Page: 61 / 136

Chem-Ad
®
VPP / VPP-E / VPP-DC
Installation
4.
61
English
4. Installation
4.1 Installation
Warning!
Risk of injury or damage to the peristaltic metering pump!
Only authorized and qualified specialists may install the peristaltic
metering pump. All electrical work on the unit may only be
performed by qualified electricians. Modifications to the unit which
go beyond those described in this manual are not permissible.
4.1.1 Ambient conditions at the site
The following must be taken into account when installing the
peristaltic metering pumps:
• The peristaltic metering pump must be protected against rain,
frost and direct sunlight and may therefore not be installed
outdoors.
• Mount the peristaltic metering pump on a flat wall in a frost-
free room with an ambient temperature of 5 to 50 °C.
• The air in the room should be non-condensing.
• Mount the peristaltic metering pump at a location where it is
protected against mechanical damage, shock (vibration),
water and vapors, alkalines and acids.
• Always mount the peristaltic metering pump above the level of
the tank (note the max. suction height of 2 m), peristaltic
metering pump housing vertical, hose connections
downwards.
• If the end of the discharge hose (point of application) is below
the level of the tank, we recommend installing a backpressure
valve (max. 0.5 bar opening pressure) at the point of
application to prevent the tank from emptying by siphoning.
• If the discharge head is very high, mount the peristaltic
metering pump so that the suction pipe is short and the
discharge pipe is longer (peristaltic metering pumps run
considerably better in positive pressure operation than in
negative pressure operation).
Please note
Note the max. pressure range of the peristaltic metering pump.
max. 2 m
A
B
A Applicator
B Suction lance/bottom priming
l