Grundfos PM 2 User Manual

16
* See service instructions on www.grundfos.com > International website > WebCAPS > Service.
13. Further product information
Further information and technical details for the
Grundfos PM 2 can be found on www.grundfos.com
> International website > WebCAPS.
If you have any questions, feel free to contact the
nearest Grundfos company or service workshop.
14. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection
services.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
8. System
without
pressure tank:
The red
"Alarm"
indicator light
flashes once
per period.
a) Cycling.
A tap has not been closed entirely
after use.
Check that all taps have been closed.
See section 8.2 Anti-cycling.
b) Cycling.
There is a minor leakage in the
system.
Check the system for leakages.
See section 8.2 Anti-cycling.
9. System with
pressure tank:
The red
"Alarm"
indicator light
flashes once
per period.
a) Cycling.
The pressure tank has no
precharge pressure, or the tank
size is insufficient.
Check the tank precharge pressure, and
recharge the tank, if necessary.
If the size of the pressure tank is insufficient,
set DIP switch 5 to "OFF", or replace the
pressure tank.
See section 8.2 Anti-cycling.
10. The red
"Alarm"
indicator light
flashes twice
per period.
a) Maximum continuous operating
time (30 minutes).
The pump has been running
continuously for 30 minutes.
Check the system for leakages.
Disable the function to allow the pump to run
for 30 minutes.
See section 8.3 Maximum continuous
operating time (30 minutes).
11. The red
"Alarm"
indicator light
flashes three
times per
period, and
each pump
start is delayed
a few seconds.
a) Too many start/stop sequences
within a short period.
The pressure tank has no
precharge pressure, or the tank
size is insufficient.
Check the tank precharge pressure, and
recharge the tank, if necessary.
If the size of the pressure tank is insufficient,
set DIP switch 5 to "OFF", or replace the
pressure tank.
b) Too many start/stop sequences
within a short period.
The PM 2 is set to start/stop with 1
bar differential pressure, i.e. DIP
switch 5 is set to "ON", but no
pressure tank has been installed in
the system.
Set DIP switch 5 to "OFF".
12. The red
"Alarm"
indicator light
flashes four
times per
period.
a) Pressure sensor fault. Repair or replace the PM unit.*
Fault Cause Remedy
Subject to alterations.

Grundfos PM 2 Specifications

General

Brand	Grundfos
Model	PM 2
Category	Controller
Language	English