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Checking functions in 
manual mode

All mechanical parts can be manually activated with the
“Manual Mode” function. If a vertical valve or the mix discharge
is opened in manual mode, they are closed automatically by
switching the main power switch OFF or if the power fails. 

1  Make sure the safety door is closed.

2 From the “Overview” screen, press the TrueBlend icon.

The TrueBlend status screen appears.

3 Press               . 

The “Settings” Screen appears.

4 Press         to start manual mode. 

Now you can operate

the material hoppers, weigh bins, mixers, and discharge
slide gate if supplied.

5 Press and hold the               button 

to check that the

alarm beacon and horn operates. These devices are locat-
ed on the door of the electrical power box.

6 Check the material hoppers by pressing the hopper

“OFF” buttons in sequence 

to check that the various

material hoppers valves can be opened and closed. 

7 Check the weigh bins by pressing the first button beside

the weigh bin icon to open and close the weigh bin. 

8 Press the middle button to switch the mixer on and off.

9 Press the bottom button to open and close the optional

discharge slide gate. (

Only functions when a pneumatic

discharge slide gate is installed.)

10  Test the safety interlock switch by pressing the OFF or

ON button to the right of the mixer icon.

11  While the blades are rotating,

open the safety door. 

The blades

should immediately stop. When you
open the door, a screen should
appear, indicating an alarm condi-
tion. This screen mask will only be
closed when all actions have been completed.

12 Close the safety door. 

The mixing blades should begin 

to rotate again.

Alarms

Understanding alarm codes: 

In front of some alarm messages you may see these designators: C1, C2, C3, C4, C5, C6, along with alarm text. 

C stands for component and 1,2,3,4,5, and 6 refer to the bin that is causing the alarm. It is important to look at the alarm text and check to see 
if there is a problem with the component bin number listed. For example, the alarm code “C2: Too little Mat.” indicates that this problem is 
occurring because of bin number 2. There are 3 basic types of alarm codes: Common alarms, material position specific alarms, and loader option
alarms. See the 

User Guide

for a complete list of alarms.

WARNING: 

This card provides only basic troubleshooting and maintenance 

information. Users must be familiar with all safety information and procedures 
described in the TrueBlend User Guide.

Problem

Door Open 

– If the blender door is opened 

during operation, this alarm will occur. The
mixer motor will remain stopped, the cycle 
is stopped.

Battery Error 

– if the battery in the control is

defective or discharged, this alarm will occur. 

Tare Wrong

– If the tare value is outside the

normal range, this alarm will occur. 

No Slave or Slave Disconnected

– If the 

there is a communication problem between 
the control and the control board, this alarm 
will occur. 

Possible cause

The door of the blender has been opened.

Something is not allowing the door to close
completely. 

Safety interlock switch is triggered.

Door is not open, but message still appears.

The battery in the controller has become 
weak or is dead.

There is no battery installed.

The range that can normally be compensated 
is -50 to 100 g. If the tare value is outside 
this range, it will alarm.

The weigh bin may be full of material, or
mechanically jammed. 

The plunger may be installed incorrectly and
pressing into the weigh bin.

The “No Slave” error occurred first, and the
sale value remains at the last valid value.

The operating pressure is too low, causing the
weigh bin to close too slowly.

The choke check valve for closing the weigh 
bin is incorrectly adjusted, causing the weigh
bin to close too slowly.

During operation, the CAN connection 
between the control and the control board 
has been interrupted. 

Solution

Close the safety door

Open the door and check for any obstructions.

Check wiring connection to safety switch.

Check wiring connection to safety switch.

Order a battery from Conair parts.

Follow the instructions in the 

User Guide

for

replacing the battery. 

When the unit starts a new batch, check 
the operation of the weigh bin. 
Make sure the bin is empty.
Perform a zero calibration.
Make sure the material sensor is adjusted 
correctly. See

User Guide.

Check why the material was not discharged
(cone, weigh bin).

Check plunger installation. Correct if 
necessary.

Check CAN connection. (See “No Slave” 
error/ check safety switch.)

Check operating pressure and adjust if 
necessary to 6 bar.

Adjust choke check valve correctly.

Check connections.

Check the touch screen controller 
connection.

Check the I/O board connection. If the 
connections are ok, replace either the I/O 
board or the controller. 

Check the safety switch contacts.

Common Alarms

or

or

or

QCB003-0512

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