K-Patents PR-23 - Manual (Page 80)

72 PR-23 instruction manual
8.3 Wash
8.3.1 Message EXTERNAL HOLD
The concentration measurement is on HOLD due to an external switch closure. For
explanation, see Section 6.4, “Configuring input switches”.
8.3.2 Messages PRECONDITIONING , WASH , RECOVERING
−
PRECONDITIONING : An optional preconditioning relay is closed, see Section 6.7 “Con-
figuring prism wash”.
−
WASH : The internal wash relay is closed, see Section 6.7 “Configuring prism wash”.
−
RECOVERING : The concentration measurement is on HOLD during a preset time.
8.3.3 Message PRISM WASH WARNING
No dip of n
D
value during prism wash. The accepted size of the dip is set as the WASH
CHECK function, Section 6.7, “Configuring prism wash”. See also Section 5.1.3 “Testing
prism wash”.
8.3.4 Message PRISM WASH FAILURE
No dip of n
D
value during any prism wash during wash tolerance time. The wash tol-
erance time is set in wash parameters, see Section 6.7.2, “Setting prism wash parame-
ters”. See also Section 5.1.3 “Testing prism wash”.
8.3.5 Message EXTERNAL WASH STOP
Tells that wash action is prevented because an EXTERNAL WASH STOP switch is closed, see
Section 6.4 “Configuring input switches”.
−
NO SAMPLE (Section 8.2.6) indicates empty pipe
8.3.6 Message LOW TEMP WASH STOP
Tells that wash action is prevented because of LOW TEMP : low process temperature in-
dicates empty pipe. To set the limit, see Section 6.7 “Configuring prism wash”.
8.3.7 Message NO SAMPLE/WASH STOP
Tells that wash action is prevented because of NO SAMPLE : the process pipe is empty and
the prism is clean.