Troubleshooting
The following troubleshooting guide will give you first aid hands-on in solving most of the problems you can
encounter. there are two types of problems:
1. Operational issues.
2. Hardware problems.
Most commonly are the operational issues. These are caused before or during loading a Tank-Truck.
The amount of hardware problems will increase if the 88XX Rack Monitor is NOT serviced on a regular base.
Especially the cable and plug are subject to wear out. Although a high-quality cable is used it cannot withstand the
strength of a Tank-Truck. Also, dirt can build up between the spring-loaded pins and the insert of the plug. If pin 10
is not moving in the insert of the plug an electrostatic discharge via other pin can damage the input circuits of the
88XX Rack Monitor. Therefore check cable and pins/plug on a regular base to avoid traffic block on a loading bay.
The common operational issues are wrong, defect or poor connected sensors. In some cases an correctly adjusted
sensor can cause a premature (or delayed) shutoff of the loading procedure. If the 88XX Rack Monitor does switch
to the permissive state it will show the most probably cause on the OLED Display. The 88XX findings are based on
the measured data and its conclusion might not be the correct conclusion. If the 88XX Rack Monitor is set to
accept only EN13922 compliant sensors, it will reject ALL sensors and wiring which is not according this standard.
This will be shown on the Oled-Display. Since this is a relative new directive a lot of Tank-Trucks might not be
wired according to this directive or the sensors are on the boundary of the EN13922. During this transition period
the 88XX Rack Monitor can be set to ROW (Rest Of the World) values by means of placing the switch 1 and 2 of
the lower switches to off. For example, previous On Board Monitors (OBM or ROM) can be connected with shorted
channels and since the EN13922 will refuse shorts it will NOT go to the permissive state.
Note: Faulted channels, for instance “Open Wire” cannot be bypassed with the Blue Bypass key. The Red Bypass
key must be used.
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