4-3
Metal Detector
METARIDDER
Troubleshooting
A) The power cannot be turned ON even if the main circuit breaker and the Operation
Switch are both switched ON
Assumed Cause
Troubleshooting
The power cable is unplugged.
Plug in the power cable.
The machine is used with a
power supply outside the
specification.
Check the power supply specifications for the machine.
Use the machine with the power supply corresponding to the voltage (AC***V) inscribed on
the label.
[Table 4: Troubleshooting the problem of turning ON the power]
B) The discharge damper does not operate even if a metal piece has been detected
Assumed Cause
Troubleshooting
The solenoid is defective.
Contact SAIKA.
The damper is loose.
Contact SAIKA.
The circuit protector has been
activated.
Check No. 14 of “
Names and Functions of Various Sections of the Machine
s” in Section
1.2.1.
If the circuit protector has been activated, push the tip of the circuit protector inward.
* If the discharge damper operates continuously for 30 seconds or longer, the circuit
protector is activated in order to protect the solenoid.
Normal status
When the circuit protector is activated
[Table 5: Troubleshooting for discharge damper discharge failure]
C) Metal pieces cannot be detected
Assumed Cause
Troubleshooting
The sensor sensitivity has
dropped.
If the sensor sensitivity drops due to a drop in the ambient temperature (*1), the detection
level becomes low necessitating an adjustment of the sensor signal sensitivity. Contact
SAIKA.
The size of metal pieces is
smaller than the detection
capability of the machine.
Let a test piece (*2) drop through and check if it can be discharged. (Repeat the test a few
times.)
If the type of metal piece desired to be detected (the target) cannot be detected, it is
possible the target is smaller than the detection capability of the machine. Ensure that the
target matches the detection capability of the machine.
* If larger metal pieces cannot be detected, contact SAIKA.
The sensor has failed.
If above actions do not solve the problem, the sensor may have failed.
Contact SAIKA.
[Table 6: Troubleshooting the problem of failure to detect metal pieces]
(*1): For more information on the operating conditions, see Section 6.1 Specifications.
(*2): The test piece is optional.
