Trouble Shooting; Issues Affecting All Circuit Boards; Reset Operation; Evaporator Proximity Switches - Cornelius I-SERIES Training Manual

TROUBLE SHOOTING

1. I A
SSUES FFECTING

1.1 Reset Operation

When ice machine is shutdown and Error-LED is operational, the ice machine power
switch must be turned OFF for approximately 5 seconds and returned to the ON posi-
tion to reset the circuit board and allow the ice machine to restart operation.

1.2 Evaporator Proximity Switches

Proximity switches are mounted to the evaporator and the magnet is mounted to
water curtain.
Switch Notes:
• Manually holding the curtain open for approximately 5 seconds during freeze
mode will shut the ice machine down.
• With dual-evaporator machines, both right hand and left hand switches must
open and reset to start the next freeze cycle.
1.3 Harvest Safety Termination (Red and Yellow Boards)
After 4 minutes in harvest mode, the safety timer in the circuit board will terminate
the harvest mode and place the ice machine in freeze mode. This safety cycle will
protect the evaporator, etc. should the harvest mode not terminate. Three consecu-
tively failed harvests will result in a solid red Error-LED, which requires a manual
reset.

1.4 Stacking Cable

When two I-series ice machines are stacked, a cable is used to connect their circuit
boards. This allows the bottom unit to be shut down on a Full Bin Signal (or other
error code). The top unit will finish the cycle it is in, and shut down.
The circuit board stacking connection can be used for the stacking cable or for a bin
thermostat, but not for both.
The I-series machines should never be stacked more than two high.

1.5 Ice Bridge Thickness Adjustment

1. Thinner Bridge - turn the ice thickness POT adjustment screw clockwise one full
turn. Allow two cycles before determining if additional adjustments are required.
© 2001, IMI Cornelius Inc.
A C B
LL IRCUIT OARDS
I-Series Ice Machine Training Manual
- 17 -