Cale CWT Compact Coin Jam Resolution (Power Failure) -... | terminalfaults.org

Technical Background:

The CWT Compact coin handling system relies on a 24V DC motor and multiple optical sensors to manage coin flow. The coin validator's inductive sensor discriminates coin types. Solenoids control coin routing. A power failure disables the motor and solenoid control, trapping coins within the mechanism.

Symptoms:

Coin acceptance system is non-functional. Coins are physically lodged within the coin path, preventing further transactions. Power loss prevents normal ejection routines.

Possible Causes:

Physical obstruction from foreign objects (e.g., debris, damaged coins) within the coin path.
Coin validator malfunction: Sensor drift causing incorrect coin recognition, leading to improper routing and jams.
Solenoid failure: Solenoid stiction due to corrosion or mechanical wear prevents coin diverter operation.
Power supply issue: Intermittent power dips or surges can cause the control system to mismanage coin flow before complete failure.
Motor Failure: The 24V DC motor responsible for coin transport may be seized or have a worn gearbox.
Optical Sensor Degradation: Dust or debris accumulation on optical sensors within the coin path, preventing accurate coin detection.

Solution:

1

Verify main power is disconnected to the CWT Compact. Engage Lockout/Tagout (LOTO) procedures.
2

Locate the manual coin release lever or access panel (refer to the CWT Compact service manual).
3

Using the manual release, carefully attempt to dislodge the jammed coins. Avoid excessive force.
4

If the manual release is ineffective, visually inspect the coin path for obstructions using a flashlight.
5

Use a non-conductive tool (e.g., plastic probe) to gently clear any visible obstructions. DO NOT use metal tools.
6

Once the coin path is cleared, restore power and observe coin acceptance during a test transaction.
7

If the issue persists, further diagnostics requiring specialized tools are needed. Contact a certified Cale technician.

Safety Warning:

High Voltage Risk: Always disconnect power and follow Lockout/Tagout (LOTO) procedures before performing any maintenance. Avoid contact with internal components. Risk of electrical shock. Do not use flammable solvents or liquids during cleaning.

Prevention:

Regularly inspect and clean the coin entry and exit points for debris.,Schedule preventative maintenance to lubricate moving parts within the coin mechanism (refer to service manual for approved lubricants).,Implement a coin quality check to remove bent, damaged, or foreign coins from circulation.,Check for proper grounding to prevent ESD damage to coin validator sensors.,Monitor coin acceptance rates. A decrease may indicate a developing issue.

Expert Tip:

Check the coin diverter solenoid. A common failure point is the solenoid plunger sticking due to corrosion. Applying a small amount of silicone-based lubricant to the plunger shaft *after* disconnecting power and verifying no residual voltage can often resolve this issue.

Frequently Asked Questions

•What type of lubricant is recommended for the coin mechanism?

Refer to the CWT Compact service manual for approved lubricants. Typically, a dry PTFE lubricant is recommended.

•How do I test the optical sensors?

Optical sensors require specialized testing equipment (oscilloscope, multimeter). Voltage levels and signal integrity must be verified according to the service manual.

•Where can I find the CWT Compact service manual?

Contact Cale or an authorized Cale distributor for access to the service manual.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What type of lubricant is recommended for the coin mechanism?

•How do I test the optical sensors?

•Where can I find the CWT Compact service manual?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: