Systec DB-45 - Checking the Water Feed Pump (M1); Checking the Functionality of the Flow Monitor

V/D S ERIES
M ECHANICAL ASSEMBLIES
3-64 Revision: 2.1
Checking the water feed pump (M1)
• Check that the impeller works correctly, and for unusual noises and
correct conveying.
The impeller is available as a separate spare part.
• Check the pump capacity (only for external water supply):
If the external water supply comes from a water container (e.g. a canister),
then the pump may suck in air.
When the water feed pump (M1) has sucked in air, then water is no longer
conveyed: The pump switches off as the flow monitor no longer registers
any water flow. The NoDeminWater error message appears.
Air extraction:
• Unclip the hose between the water feed pump (M1) and no-return valve
(R1) at the no-return valve, then feed it into a container.
• Switch the equipment on at the main switch.
• Let the air bleed out of the water feed pump until water flows.
• Switch off the device and reattach the hose.
Checking the functionality of the flow monitor
V-40 – 55 V-65 – 150 X E B
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D-23 D-45 D-65 – 200 X E B
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• Check GenFlowSw: Whilst the steam generator is being filled by the
water feed pump, you can check GenFlowSw to see that it switches on
and off in the Service -> Digital inputs menu.
Pay attention to the level of water in the container!
Ensure that the container is always filled with enough water.