Grundfos UPS 200 Series, Instructions Manual

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B)
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English (GB) Installation and operating instructions
Note: Before replacing the pump head, compare the
data on the nameplates of the existing and the new
pump heads.
Replacement
1. Switch off the electricity supply to the pump by
means of the external mains switch. The green
indicator light on the terminal box must be off.
2. Drain the system or close the isolating valves on
either side of the pump.
3. Remove the terminal box cover.
4. Remove the speed switch.
5. Slacken and remove the screws, pos. A and B,
fig. 1 . Remove the plug. Slacken and remove the
screw, pos. C, fig. 2 .
Single-phase pumps: Remove the capacitor
holder, pos. A and B in fig. 3 .
Remove the terminal box.
6. Slacken and remove the four screws, pos. E in
fig. 4 , securing the pump head to the pump
housing. Remove the pump head.
7. Fit the new pump head.
8. Tighten the four screws diagonally by means of a
torque wrench.
Torques:
M8: 15 Nm.
M10: 22 Nm.
9. Fit the terminal box.
Note: Use self-tapping screws only.
Make sure that the earthing screw, pos. B in fig. 1
and 2 , is screwed home to obtain good contact
between the terminal box and the motor.
Single-phase pumps: Fit the capacitor holder,
pos. A and B in fig. 3 .
Fit the new plug supplied with the pump head
over the screw, pos. C, fig.
2 .
10. Fit the speed switch. The number of the desired
speed must be visible through the window in the
terminal box cover.
11. Fit the terminal box cover.
12. Fill the system with liquid and vent it.
The pump is self-venting.
13. If required, remove the inspection screw, pos. D
Prior to installation, read
this document. Installation
and operation must comply
with local regulations and
accepted codes of good
practice.
DANGER
Electric shock
• Death or serious
personal injury.
• Before starting any work
on the product, make
sure that the power
supply has been
switched off and that it
cannot be accidentally
switched on.
WARNING
Crushing of hands and
feet
• Death or serious
personal injury
• Be careful when you
handle the pump head.
The rotor and impeller
are not fixed to the
stator housing.
CAUTION
Pressurised system
• Minor or moderate
personal injury
• If the inspection screw
is to be loosened, make
sure that the escaping,
scalding hot liquid does
not cause personal
injury or damage to
components