Part No.23747 Rev. F June 2017
- 34 -
Refrigerated Well GN Series
Optional Condensate Boil-off Assembly
GN SERIES REFRIGERATED WELL
-
SERVICING
Condensate
Disposal
The automatic condensate removal,
ACR system consists of a water tray, a
water level detector and a boil-off
element with an over temperature cut-
out.
If the element fails, it may be replaced
by springing it from the mounting
bracket. Cut and splice the leads and
protect with heat-shrink sleeves.
ACR Fault
Finding Guide
First check if the condensate water level probe in the ACR tank is dirty and
needs cleaning (a dirty probe may either fail to detect water, or give a false
indication of water) clean if required.
Check the Finder Level Control sensitivity range adjustment is set to 75k
. If
the sensitivity is set too low, the Level Control may not detect the condensate
water and wont switch on the ACR element. If the sensitivity is set too high, the
Level Control may get a false indication of the condensate water and switch on
the ACR element without water present.
Fault:
ACR element is on continuously when no condensate water is present.
Test:
Check if the Finder Level Control unit is faulty by disconnecting the probe
wire from terminal B1 on the Level Control unit. With cabinet power turned on
and after waiting 10 seconds, check for 230V across terminals 11 and 14. If
230v is not present across terminals 11 & 14, replace the Finder Level Control
unit.
Fault:
ACR element does not heat even though condensate water is present
and touching the water level probe.
Test:
With cabinet power turned on and after waiting 10 seconds, check for
230V across the ACR element (terminals A1 & 11 on the Finder Level Control
unit). If there is 230V across the element but it does not heat, replace the
element.
If 230V is not present across terminals A1 & 11, check the Finder Level Control
unit by short-circuiting across the level sensor terminals B1 & B3. With cabinet
power turned on and after waiting 10 seconds, check for 230V across terminals
A1 & 14. If 230V is not present across terminals A1 & 14, replace the Finder
Level Control unit.
If 230V is now present across terminals A1 & 14, then the condensate water
probe wiring needs to be checked for an open circuit, or the probe needs to be
cleaned.