6-1
6. Test operation
6.1
Check items related to manual operation
Note
Check the following items related to manual operation for all the pumps.
(1) Select “Manual” with the
㻌 㻌
switch.
(2) Press the “Manual” switch of the pump that you wish to run, and then hold down the cursor switch
to
gradually increase the operating frequency. At that time, confirm that the pump is running properly with
respect to the following points:
c
Installation and piping conditions (No leakage, abnormal vibration, or any other problems)
d
Rotation direction of the pump
Check the rotation direction of the motor fan. If it is rotating clockwise viewed from the motor side, the
direction is correct.
e
Priming conditions (if you hear water flowing or not)
(3) While confirming that the pump is running properly, gradually open the sluice valve of the test pipe until air
is completely removed from the pump.
Warning
Do not run the pump continuously for over one minute while the sluice
valve on the discharge line is shut (zero-discharge operation).
Otherwise, the temperature and pressure will increase inside the
pump, which may damage the pump and/or cause steam to blow off.
(4) After air has been completely removed, shut the sluice valve of the test pipe.
(5) Press the “Manual” switch of the running pump to stop the pump.
6.2
Check items related to automatic operation
Select “Automatic” with the
Operation
Selector
switch to perform automatic operation.
First, carefully read the following sections to understand how automatic operation works, and then confirm
that the unit runs properly in the automatic modes using the test pipe. During the operation, also check each
pump for any abnormal pressure, noise, or vibration.
Note that you can change the Total Head setting and the Minimum Sustained Head setting from their factory
defaults, depending on the conditions on site. Follow the instructions in “7.5 Parameter setting” in such a
case.
Switches to be pressed
For No.1 pump operation: ··········
Confirm
# 1
Manual
1
1
For No.2 pump operation: ··········
Back
# 2
Manual
2
2
Operation
select
