How to resolve Oil Cooling Alarm
If you cannot reset the alarm after letting the machine rest and reset, then you can perform these troubleshooting steps.
Check physical condition
If you have an oil cooling alarm you must verify and ensure that there is no physical reason; such as high oil temperature (>80c) due to low oil level, water/air infiltration in oil, blown fuse or fan issues.
The oil cooling sensor, or oil overtemperature sensor, on the decanter centrifuge is a dual contact with a N/O and a N/C contact.
​Oil Temperature reaches 60c then Fan turns on.
Oil Temperature reaches 80c then Oil Cooling Alarm turns on
What to check
- Verify the wiring connections at the sensor, the junction box, and the panel terminal (see below info for reference)
- Check the temperature of the radiator with a temperature measuring tool and confirm if the temperature is high or not.
- Check that the fan turns on after running awhile. If the alarm comes up prior to running skip this step.
- Verify and replace Oil Thermostat Fuse FU18.1 (6A) (see attachment for location) This fuse allows for the fan operation.
Once you have confirmed the fuses are ok, it is likeley the sensor and you must replace the sensor.
ORDER at service@drycake.com
PART# Y1040044 Oil Cooling/Temperature Sensor
max 220VAC - 10A
Temp max: 120c
How to Bypass the Oil Cooling Alarm and Fan Running contact
In case you are required to temporaly bypass the alarm follow the below steps.
This will cause the fan to run constantly and disable the alarm for overheating.
Bypassing the sensor should only be temporary.
- Unplug the sensor cap at the sensor itself.
- Bridge connections as per below diagram.
Make sure to remove the bridges and verify wiring connections upon sensor replacement.
Bridge Cooling Alarm Bridge: NO ALARM
Bridge Fan Running: FAN ON
Information on wiring connection
Junction box and Terminal Connections:
The Cooling Fan operates on the N/O contact of the sensor, wired to connections X2A:27 & X2A:28 | DPC_10 IN6
The Oil Cooling Alarm is on the N/C contact of the sensor, wired to connection X2A:35-36 | DPC_10 IN7
Sensor Connection:
Pin T+1 is for FAN Wiring Connection: X2A:27-28 | 60c N/O
Pin 3+4 is for ALARM Wiring Connection: X2A:35-36 | 80c N/C
N/O - Normally Open contact
N/C - Normally Closed contact
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