Walchem WDB400 Series, Инструкция по эксплуатации

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BLODOWN TIMEOUT
This error condition will stop conductivity control. It is caused by the blowdown output being activated for longer than the programmed
Blowdown Time Limit.
Possible Cause Corrective Action
Programmed value too low for normal conditions. Increase Blowdown Time Limit.
Blowdown flow rate too low. Check for clogged strainer.
Check for insufficient pressure differential.
Blowdown valve not opening. Check blowdown valve wiring. Check controller relay.
FEED TIMEOUT
This error condition will stop the feed pump for that particular feed cycle. If feed is initiated again, the feed pump will be allowed to
activate. The error condition is caused by the feed output being activated for longer than the programmed limit.
Possible Cause Corrective Action
Programmed value too low for normal conditions. Increase Feed Time Limit. (May also be called Max Time or Lockout)
Blowdown took too long. (Blowdown & Feed or Feed as
% of Blowdown only) See Blowdown Timeout Troubleshooting.
Pumping problem. Check chemical supply. Check pump for prime. Check tubing for blockage or
leaks.
Controller problem. Check output wiring. Check controller relay.
COND HIGH ALARM
This error message indicates that the conductivity is above the programmed percentage above set point. The conductivity will continue to be
monitored, and the blowdown and feed outputs will be allowed to be activated.
Possible Cause Corrective Action
Fouled conductivity electrode. See Conductivity Electrode Troubleshooting section.
Blowdown flow rate too low. Check for clogged strainer. Check for insufficient pressure differential.
Blowdown valve not opening. Check for faulty blowdown valve. Check blowdown valve wiring. Check
controller relay.
Conductivity rose over alarm limit while biocide lockout
occurred. Allow normal blowdown to occur.
COND LOW ALARM
This error message indicates that the conductivity is below the programmed percentage below set point. The conductivity will continue to be
monitored, and the blowdown and feed outputs are allowed to be activated.
Possible Cause Corrective Action
Fouled conductivity electrode. See Conductivity Electrode Troubleshooting section. (sections 6.1 and 7.3)
Electrode disconnected. Reconnect.
Electrode dry. See "No Flow" Troubleshooting section.
Blowdown valve stuck open. Check for faulty blowdown valve. Check blowdown valve wiring. Check
controller relay.
Flashing. Remove flow restriction upstream from electrode. Increase flow restriction
downstream from electrode.
Install sample cooler.
Move skimmer line below water level or raise water level.