5
5. Changing the power head
position
The power head orientation change should be
made before filling the system with fluid.
Pump liquid may be scalding hot and under high
pressure.
The power head can be rotated in steps of 90°.
Review fig. 3 for possible/permissible positions.
Only use orientations C and D for CSA
Enclosure Type 2.
Fig. 3
Changing the power head position
Procedure:
1. If fluid is present, drain system fluid from
pump or isolate system fluid from pump.
2. Loosen 4mm screws and turn the pump head
to desired position; see fig. 3.
3. Insert and cross-tighten the screws to 7 ft-lbs
torque.
6. Electrical installation
All electrical work should be performed by a
qualified electrician in accordance with the latest
edition of the National Electric Code and state,
local codes and regulations.
•
The motor of Grundfos Alpha is protected by
the electronics in the control box and requires
no external motor protection.
•
Check that the supply voltage and frequency
correspond to the values stated on the pump.
•
Only connect the pump to the mains with the
line cord or through the terminal box supplied;
see fig. 4 and 5.
•
Do not modify and only use cord set supplied
•
Lights on the control panel indicate electrical
supply has been switched on.
6.1 For line cord models
Follow procedure outlined in fig. 4.
Fig. 4
Connecting and removing power plug
for line cord models
Warning
Before starting any work on this
circulator, make sure electrical
supply has been switched off and
that it cannot be accidentally
switched on.
T
M
04
34
18
10
1
0
Power head
orientation A
Power head
orientation B
Power head
orientation C
Power head
orientation D
Warning
Risk of electrical shock - This pump
is supplied with a grounding
conductor and grounding-type
attachment plug. To reduce the risk
of electric shock, be certain that it is
connected only to a properly
grounded, grounding-type
receptacle in accordance with the
National Electric Code and any state,
local governing codes and
regulations.
TM
04 342
0 101
0
1
2
3
Insert line cord plug onto pump
(side view).
To remove cord plug from pump:
(Bottom view)
1. Insert 1/8 in. flat blade
screwdriver into slot.
2. Rotate screwdriver.
3. Pull cord to remove.
