Grundfos 97931710, Installation And Operating Instructions Manual

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9.6 Commissioning Checklist
Before the Commissioning phase starts ensure that the Installation Checklist has been
completed and check the state of the Mains power and water supplied to the unit.
Step Done Activity Action/Check/Notes
1

Fully read and study this manual.
2

Ensure that the installation location meets all of the
requirements in this manual and BS 9251 latest revision.
3

Check Mains power and water to the unit are both OFF
Ensure both are OFF and cannot be
accidentally turned on.
4

If necessary, remove the two screws retaining front
cover. Remove front cover. Place to one side.
Do not disconnect earth wire
5

Inspect the Installation, check everything in the
Installation check list has been completed.
6

Make first setting of the Pressure switch values according
to the design calculations for the system. Course settings.
May require further adjustment
against the pressure gauge later
7

Open the system isolating valve on the discharge side of
unit, Open the system isolating valve on the suction side
of the unit. Apply water to the unit.
8

Prime/Vent the CR pump and whole system.
Replace priming screws etc to seal system.
Refer to CR pump I&O manual for
guidance.
9

Inspect for leaks
Fix any leaks
10

Review all of the above actions, then Apply Mains power
to unit.
11

Pump will start, run for 20 seconds and pressurise the
system. Prime/Vent the system again.
Check the pressure gauge value is as expected.
12

Inspect for leaks
Fix any leaks
13

Tune the Pressure switch settings for the system against
the gauge readings and the designed pressures settings
by draining off water and allowing the unit to respond
observing values on gauge.
Press Test/Reset button if the
excessive starts fault appears
14

Check the Digital Inputs give the expected outputs

Tank low water level

Flow switch
Optimise retard on flow switch to
prevent false alarms
15

Replace front cover and re-fit the two screws
16

Set the pump test time
Press and hold the Test/Reset
button on the control panel.
Weekly Test time set at this time.
17

Clean up area and ensure safe for user, Mains isolator is
locked in the ON position.
18

System is ready to Verify
Update History log at back of this
manual