Grundfos PLV Series, Инструкция по установке и эксплуатации

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English (GB)
9
4. Installation
4.1 Optimal installation
Fig. 12
Optimal installation
4.2 Connections
The pressure loading valves have an inlet and an outlet
(see arrow on housing). They are installed in the discharge line.
Pressure loading valves can also be mounted directly on the
discharge valve of the dosing pump with an optional adapter.
4.2.1 Installation in the discharge line
1. Connect the discharge line from the discharge valve of the
dosing pump to the inlet of the valve.
2. Connect the outgoing discharge line to the outlet of the valve.
3. Re-tighten screws on top part of valve after 48 operating
hours. Max. torque:
4.2.2 Installation directly on the pump
1. Remove connection from the inlet of the valve.
2. Screw the adapter onto the inlet of the valve.
3. Screw the valve with the adapter onto the discharge valve of
the pump.
4. Connect the outgoing discharge line to the outlet of the valve.
5. Re-tighten screws on top part of valve after 48 operating
hours. Max. torque:
Warning
The valve must only be installed by authorised
and qualified personnel!
Warning
When working with chemicals, the accident
prevention regulations applicable at the
installation site must be applied!
Observe the chemical manufacturer's safety data
sheets when handling chemicals!
Warning
When working on the product, or connections
and lines, always wear protective clothing
(e.g. safety goggles and gloves)!
The system must be unpressurised!
Only operate the system if all lines are connected
correctly!
Caution
When using a pressure loading valve in
conjunction with a pulsation damper, the
pressure loading valve must be installed behind
the pulsation damper.
Caution
When using a pressure loading valve in
conjunction with a pressure relief valve, the
pressure loading valve must be installed behind
the pressure relief valve.
Note
The pressure loading valve should be installed
directly in front of the injection unit. For
installation directly on the pump, the line
connected to the injection unit should be as short
as possible.
TM
04
83
35
05
11
1 Dosing tank
2 Electric agitator
3 Extraction device
4 Suction pulsation damper
5 Dosing pump
6 Pressure relief valve
7 Pressure loading valve
8 Pulsation damper
9 Flow meter
10 Injection unit
1
2
3
4
5
6
7
9
10
8
Warning
Observe the flow direction (indicated by an arrow
on the valve housing).
Up to 60 l/h DN 20, DN 32 DN 50, DN 65
2 Nm 5 Nm 5 Nm
Note
A special adapter is needed, see 8.1 Adapter for
installation directly on the pump (up to 60 l/h).
Up to 60 l/h DN 20, DN 32 DN 50, DN 65
2 Nm 5 Nm 5 Nm