Grundfos PM 1 - PM 2 Operation and Functions

11
Selection
Grundfos Pressure Manager
Grundfos pumps used with PM 1 and
PM 2
The table below shows the Grundfos pumps which are
typically used with the PM 1 or PM 2.
Note: The nominal motor current must not exceed the
maximum contact loads of the PM units. The contact
loads above refer to single-phase pumps. For use with
three-phase pumps or single-phase pumps exceeding
the maximum contact load, an external contactor can
be used together with either PM 1 or PM 2.
Minimum discharge pressure
To ensure correct operation, the pump installed
with PM 1 or PM 2 should at least be able to provide the
following head:
Replacement
The existing Grundfos pressure control units
PRESSCONTROL
®
, ECOPRESS
®
,
MONDIALPRESS
®
and MASCONTROL
®
can all be
replaced by the PM 1 or PM 2.
PRESSCONTROL
®
Depending on pump size (nominal motor current),
the PRESSCONTROL
®
units can be replaced by either
PM 1 or PM 2.
ECOPRESS
®
and MONDIALPRESS
®
The ECOPRESS
®
and MONDIALPRESS
®
units can all
be replaced by either PM 1 or PM 2.
Note that the ECOPRESS
®
and MONDIALPRESS
®
have a port-to-port length of only 150 mm whereas the
PM 1 and PM 2 have a port-to-port length of 171 mm.
MASCONTROL
®
Thanks to the low pressure loss, the MASCONTROL
®
units can be replaced by the PM 2, even if the outer
dimensions of the PM 2 are smaller.
Note that the MASCONTROL
®
has 1 1/4" connections
whereas the PM 2 has 1" connections.
Furthermore, the MASCONTROL
®
is rated for 2.2 kW
whereas the PM 2 is rated 2.0 kW.
PM
model
Max. contact load
[A]
Grundfos pump type
230 V 115 V CM CH SQ JP SP SPO CR
PM 1 6 8 zzzz z z z
PM 2 10 10 zzzz z z z
PM type and variant
PM 1 PM 2
1.5 bar 2.2 bar 1.5 - 5 bar
Minimum head of pump 24 metres 31 metres 19 metres