Why Machine Jams Cause Count Discrepancies
When a cash counter encounters a folded corner, dog-eared bill, or double-feed, it brakes the motor instantly. In mid-acceleration, one bill might be past the counting sensor (registered), while another is wedged directly beneath the counting eye, and a third remains in the hopper throat.
If the operator pulls all three bills out and dumps them back into the hopper without checking the display screen, the bills that already passed the sensor are counted a second time, creating an artificial register cash overage.
The Standard Jam Recovery Protocol
To preserve audit integrity and eliminate re-counting 300-note batches from scratch:
- Step 1: Check the Display Before Touching Cash: Note whether the counter screen reads JAM IN TRANSPORT, DOUBLE FEED, or CHAIN NOTE. Note the current counted total displayed.
- Step 2: Inspect the Exit Stack: The bills already stacked in the lower output pocket are 100% verified and counted. Set this stack aside—never mix it back into the uncounted hopper bills.
- Step 3: Clear the Transport Cavity: Open the top clamshell cover. Remove the jammed note gently without tearing. Inspect the bill: if the leading edge reached the output pocket, check whether the screen counter advanced by one.
- Step 4: Use Add Mode (ACC): Most commercial counters have an ACCUMULATE / ADD function. By leaving the verified count active in memory and running only the remaining uncounted stack, you avoid full re-counts while maintaining mathematical certainty.
Handling the Reject Pocket on 2-Pocket Machines
On 2-pocket discriminators, rejected notes are placed in the upper pocket without halting counting. When the stack finishes:
- Inspect each rejected note manually: check for foreign currency (USD), dog-eared corners, tape, or counterfeit features.
- Straighten acceptable bills and run them through in a second mini-batch.
- If a bill is repeatedly rejected, enter the denomination manually into your POS cash management software rather than forcing it through the rollers.
Commercial Cash Equipment Maintenance in Victoria
Chronic jams are a mechanical symptom: worn friction belts, out-of-tolerance feed gaps, or glazed rubber rollers. West Coast Wrench tunes commercial cash counters and coin sorters across Greater Victoria to keep your cash room running smoothly.