Product Description; Applications; Function; Identification - Grundfos Change-over device 185 Instrucciones De Instalación Y Funcionamiento

2. Product description

2.1 Applications

2.1.1 Intended use
The change-over device 185 is used for changing over the gas
supply between two container batteries.
It is used within Grundfos gas dosing systems for water
treatment, strictly complying with the instructions in this manual.
Warning
Other applications are not intended and are not
permitted. Grundfos accept no responsibility for
damages caused by unintended use.
Media
The product is intended for use with one of the following media:
• Cl
2
• NH
3
• SO
2
The allowed medium is specified on the nameplate.
See section 2.3.1 Nameplate.
The media must have the following characteristics:
Aggregate state
• gaseous
• liquid
Observe the freezing and boiling point of the used medium at
operating pressure. Observe the temperatures specified in
section 3. Technical data.
2.1.2 Improper use
Warning
Improper use, misuse or misapplication can lead to
personal injury and damage to the equipment!
The operational safety of the product is only guaranteed, if it is
used in accordance with section
• The product must not be used for media that are not specified
on the nameplate.
• The product must not be used in potentially explosive areas.
• The product must not be used if it is damaged.
• The product must not be used after improper repair.
• The product must not be used after unauthorized modification.
Chemical characteristics
• non-combustible
• non-abrasive
• non-crystallising
2.1.1 Intended use.

2.2 Function

If one of the gas container batteries connected to the change-
over device becomes empty, the contact manometer triggers the
change-over process. The respective motor valve closes the
connection to the empty container battery automatically. When
the closing motor valve reaches its end position, the second
motor valve opens the connection to the second container
battery.
Signal lamps indicate the respective position of the valves at the
control panel.
By means of the operation mode switch, the change-over device
can be switched from automatic to manual operation mode. In the
manual operation mode the motor valves are opened and closed
with the keys at the control panel.
The motor valves must be removed for maintenance and repair.
The additional bypass line of the change-over device 185-2
permits operation via manually operated ball valves.
Two potential-free contacts enable the transmission of the
operating status "open" for both motor valves to a control room.
An additional contact transmits an alarm signal, if the pressure
remains below the contact manometer setting for more than
40 seconds.

2.3 Identification

2.3.1 Nameplate
1
96681723 Type: -185
2
S/N: 10000001
3
600KG/H, Chlorine, 230V 50Hz
96681723P11133010000001
10
Fig. 1 Nameplate of change-over device 185
Pos. Description
1 Product number
2 Serial number
3 Flow rate
4 Model
5 Allowed medium
6 Voltage
7 Frequency
8 Code for year and week of production
9 Marks of approval
10 Country of origin
4
5
6
7
8
9
5