Air Bleeding Operation And Flow Rate Adjustment Operation During Test Run - Mitsubishi Electric QAHV Série Manuel D'installation & D'instructions

[4] Air bleeding operation and flow rate adjustment operation during test run

(1)Air bleeding operation
Check there is no water leakage during operation.
For each circuit, perform at least three sets of at least 5 minutes in duration. During the air bleeding operation, use the
method below (*1) to display the water flow rate during operation and check it is stable (no air entrainment).
(1)-1. Primary side water circuit air bleeding operation
Step Contents
a Water level check
b Power operation
PCB DIP switch
c
setting
Operation
d
procedure
e Stop operation 1
f Stop operation 2
(1)-2. Secondary side water circuit air bleeding operation
Step Contents
a Water level check
b Power operation
Operation
c
procedure 1
PCB DIP switch
d
setting
Operation
e
procedure 2
f Stop operation 1
g Stop operation 2
Operation and check points
Check the water level is the full level.
Turn the power ON.
Change the setting of SW1-8 from OFF to ON.
SW1
8 9
ON OFF
Change the setting of PCB slide SWS1 from
REMOTE to LOCAL.
* When the pump sound has become quiet, end
operation.
Change the setting of PCB DIP SW1-8 from ON to
OFF.
Change the setting of PCB slide SWS1 from
LOCAL to REMOTE.
Operation and check points
Check the water level is the full level.
Turn the power ON.
Check that the secondary side control is enabled.
Change the setting of SW3-3 from OFF to ON.
SW1
8 9
OFF OFF
Change the setting of PCB slide SWS1 from
REMOTE to LOCAL.
* When the pump sound has become quiet, end
operation.
Change the setting of PCB DIP SW3-3 from ON to
OFF.
Change the setting of PCB slide SWS1 from
LOCAL to REMOTE.
* Make sure SWS2 is set to the lower
SW3
side. (See page 25.)
3
OFF
The compressor does not operate.
* The pump and motor-operated valve 2
are automatically set to OPEN (starting
water flow).
* The pump and motor-operated valve 2
are automatically set to CLOSED
(ending water flow).
For details, refer to page 31 (4-[3]-(3)-3).
* Make sure SWS2 is set to the lower
SW3
side. (See page 25.)
3
ON
The compressor does not operate.
* The pump and motor-operated valve 2
are automatically set to OPEN (starting
water flow).
* The pump and motor-operated valve 2
are automatically set to CLOSED
(ending water flow).
GB-36
Supplemental explanation
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Supplemental explanation
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