Grundfos UPM3 Auto L 70 User manual

1
SE.33.C.178.1905
Assembly instructions | Grundfos UPM3 Auto L 15/70
Introduction
Grundfos UPM3 Auto L 15/70 is a compact,
energy-saving and high-performance pump spe-
cically developed for the OEM market. LK uses
UPM3 Auto L in several products because of its
good characteristics.
The pump has ten different setting options, three
curves for Proportional Pressure, three curves for
Constant Pressure and four curves for Constant
Curve. The recommendation for underoor heat-
ing is Constant Pressure and a curve that is adap-
ted to conditions for the installation. The pump is
set to Proportional Pressure, curve three, on
delivery.
Operating mode / Settings mode
Grundfos UPM3 Auto L indicates in normal oper-
ation the power used by the pump (stated in per
cent of maximum capacity) in accordance with the
table below.
Table, overview of operating mode.
To show the setting currently in use by the pump,
give the button a short press . Read the selected
mode by studying the settings menu. After two
seconds the indicator returns to operating mode.
Grundfos UPM3 Auto L 15/70
To change the pump setting press the button on
the pump for 2-10 seconds, when the pump will
show the selected setting in accordance with the
settings menu. Pressing the button shifts the
pump between the different settings. Adjust to the
desired setting using the menu.
Note that for oor heating Constant Pressure is
recommended with a curve that is suitable for the
installation needs.
Note!
The pump is set to Proportional Pressure,
curve three, on delivery.
This must be manually changed to Constant
Pressure by the installer when the pump is
used in floor heating installations.
To show the current setting, press
once on the button
To view the settings menu, hold the
button pressed for 2-10 seconds
When the setting changes are com-
plete, the pump returns to operat-
ing mode after 10 seconds

2
SE.33.C.178.1905
Assembly instructions | Grundfos UPM3 Auto L 15/70
Display Indication Operation Action
Red LED,
Yellow LED
#3
Electric
fault
Pump stops
because of
low voltage or
serious fault
Check voltage
to pump / Re-
place pump/
impeller*
*Release impeller using screwdriver PH2. Break the
voltage to the pump. Insert the screwdriver into the
center hole of the drive side, press the screwdriver in
about 5 mm, then rotate forward /backward until the
impeller loosens.
Dimensions
72 45
130
90
128
36 92
G1 Weight 1,9 kg
Grundfos UPM3 Auto L 15/70 130
Pump diagram
Electrical contact
The pump's electrical contact should be connected
to a 230 V 50 hz socket by a qualied electrician in
accordance with the diagram above. This contact
no longer requires a 2-pole switch disconnecter.
The electrical contact should be equipped with a
slow-blow fuse of up to 10 A. The pump should
be disconnected from the mains before any main-
tenance work.
Settings menu
Overview of settings options for the UPM3. Relevant set-
tings are marked with a blue triangle, other settings
are shaded.
Lock
The pump can be locked so that it is not possible
to show or change settings. In order to lock/
unlock the pump then press the button for
more than 10 seconds.
Alarm codes
In the event of an operating problem then a fault
code will be displayed as below.
Display Indication Operation Action
Red LED,
Yellow LED
#5
Blocked
rotor
False start
was 1.33 s.
Wait or re-
lease rotor
Red LED,
Yellow LED
#4
Too low
voltage
Only one
warning, the
pump oper-
ates as normal
Check the
voltage to the
pump