Unexpected downtime on a tablet or capsule counting line can disrupt an entire pharmaceutical packaging operation. A small issue with product feeding, vibration, dust accumulation, counting sensors or container positioning can quickly turn into repeated stoppages, rejected batches or lost production time.
Many of these problems can be identified before the production shift begins.
For operators working with automatic tablet and capsule counting systems, a short and consistent pre-shift inspection can help identify developing issues before they become production failures.
The five checks covered in this guide are:
- Inspect the vibration and product-feeding system
- Check the counting sensors
- Inspect dust extraction and machine cleanliness
- Verify bottle/container detection and filling interlocks
- Confirm settings, change parts and basic machine condition
The current TCT article specifically highlights vibration-channel inspection, dust extraction and sensor calibration as part of the operator's daily routine.
The 80% figure in the article title is a TCT operational claim associated with this maintenance approach; it should not be interpreted as a guaranteed downtime reduction for every tablet-counting installation.
Why Pre-Shift Checks Matter
Tablet and capsule counting machines combine mechanical feeding, product separation, electronic sensing and container handling.
A typical automatic counting sequence involves:
Bulk Product → Hopper → Vibratory Feeding → Product Separation → Counting Sensor → Discharge Chute → Container → Next Cycle
TCT's rotary-disc tablet/capsule counting system, for example, uses a hopper to supply product to a rotating disc, separates and aligns individual tablets or capsules, and uses an electronic counting sensor to detect each unit before filling the container.
This means a problem at any point in the process can affect the overall line.
Examples include:
- Irregular product flow
- Excessive vibration
- Dust accumulation
- Sensor contamination
- Incorrect product settings
- Incorrect change parts
- Bottle-positioning problems
- Counting errors
- Product bridging in the hopper
- Mechanical wear
A pre-shift inspection is therefore a form of preventive maintenance at the operator level.
The 5 Pre-Shift Checks
1. Inspect the Vibration Channel and Product Feeding System
The first check should focus on how tablets or capsules move from the product hopper toward the counting area.
A stable and consistent product flow is important for reliable counting.
TCT's tablet counting machines use a vibrating tray to transport tablets toward the counting and filling station, while its rotary-disc system uses a rotating disc combined with controlled product movement toward the counting zone.
What should the operator check?
Before starting production, inspect:
- Vibratory tray or feeding channel
- Product hopper
- Rotary disc, where applicable
- Product-contact surfaces
- Discharge path
- Feed-channel alignment
- Loose components
- Abnormal mechanical movement
- Unusual noise or vibration
- Product residue from the previous batch
Why is this important?
Inconsistent feeding can cause:
- Tablet accumulation
- Product starvation
- Irregular flow
- Counting interruptions
- Increased machine stoppages
- Product damage
- Reduced throughput
If product is not reaching the counting sensor consistently, even a correctly functioning sensor may not produce reliable production performance.
Operator check
Run the machine through its appropriate start-up procedure and observe the product path before releasing the line for normal production.
Look for:
Smooth Flow → Consistent Separation → Stable Counting → Reliable Discharge
Any unusual buildup, bridging or irregular movement should be investigated before production begins.
2. Check the Counting Sensors
The counting sensor is one of the most important components of an automatic tablet/capsule counting machine.
Its job is to detect individual products as they pass through the counting zone.
TCT's rotary-disc system uses an electronic counting sensor to detect each tablet or capsule, while its tablet counting machine uses sensors designed to detect different tablet and capsule shapes and sizes.
What should be checked?
Before the shift:
Before the shift:
- Inspect the sensor area
- Remove visible dust or product residue
- Check sensor alignment
- Confirm that the counting path is unobstructed
- Check sensor cables and connections for visible damage
- Confirm the correct product recipe or counting parameters
- Perform the machine's prescribed sensor verification or calibration procedure
Why can dust affect counting?
Tablet and capsule handling can generate fines and powder.
If residue accumulates around the counting area, it can interfere with the consistency of product detection or contribute to other mechanical problems.
This is particularly relevant in pharmaceutical environments where product cleanliness and controlled operation are important.
Important distinction: calibration vs. cleaning
Cleaning a sensor does not automatically mean the sensor has been calibrated.
Operators should follow the equipment manufacturer's documented procedure for sensor verification or calibration.
If the machine indicates a sensor fault or produces unexplained counting deviations, production should not simply continue after a reset. The cause should be investigated according to the site's SOP.
3. Check Dust Extraction and Machine Cleanliness
Dust management is another important pre-shift check.
Tablet production and handling can generate powder, fines and product residue. TCT's product range includes dust extraction equipment specifically designed to capture airborne dust generated during processes such as compression, de-dusting, sieving and coating.
What should operators inspect?
Check:
- Dust-extraction connections
- Extraction hose or ducting
- Collection system
- Filters, where applicable
- Product-contact surfaces
- Counting area
- Hopper
- Discharge chute
- Machine guards
- Accessible areas where powder may accumulate
Why does dust matter?
Excessive dust can contribute to:
- Sensor contamination
- Product buildup
- Poor visibility of machine condition
- Cleaning difficulties
- Mechanical interference
- Workplace housekeeping problems
The objective is not simply to make the machine look clean.
The objective is to maintain a controlled operating environment in which the counting and feeding mechanisms can work consistently.
A practical rule
Before each shift:
Clean → Inspect → Reassemble → Verify → Start
Cleaning procedures should follow the site's validated cleaning SOP and the machine manufacturer's instructions, particularly where product changeovers are involved.
4. Verify Bottle Detection and Machine Interlocks
Counting accuracy is only one part of the process.
The machine also needs to know when and where to discharge the counted product.
Modern tablet/capsule counting systems can include container-detection and filling interlocks.
TCT's rotary-disc counting machine uses a:
"No Bottle – No Count – No Fill"
interlock to help prevent product from being counted and discharged when a container is not correctly positioned.
What should the operator check?
Before production:
- Bottle/container presence sensor
- Container positioning
- Discharge funnel alignment
- Bottle indexing
- No-bottle interlock
- Filling sequence
- Container height setting
- Bottle neck alignment
- Discharge chute condition
Why is this important?
Incorrect container positioning can result in:
- Product spillage
- Miscounts
- Product loss
- Container rejection
- Machine stoppage
- Cleaning requirements
A correctly functioning no-bottle/no-fill system can help prevent unnecessary product discharge when the expected container is not present.
Simple verification
Using the machine's approved start-up procedure:
Using the machine's approved start-up procedure:
- Run the container-handling system.
- Confirm the bottle reaches the correct position.
- Verify the machine recognises the container.
- Confirm the counting/filling sequence operates correctly.
- Verify the appropriate interlock response when a container is absent.
Do not bypass a safety or process interlock merely to continue production.
5. Confirm Product Settings, Change Parts and Machine Condition
The fifth check covers the overall machine setup.
A tablet or capsule counting machine may be capable of handling different product sizes and container configurations. TCT's current rotary-disc system is specified for tablet diameters of approximately 5–12 mm, pills around 3–12 mm and capsule sizes 0–5, depending on the applicable configuration.
TCT's broader tablet counting range also includes multiple configurations with different output capabilities and product compatibility.
This makes correct setup particularly important during product changeovers.
Verify the following:
- Correct product recipe
- Correct tablet/capsule format
- Correct counting parameters
- Correct container dimensions
- Correct discharge funnel
- Correct change parts
- Correct machine speed
- Correct feeding settings
- Correct sensor configuration
- Correct production quantity
Inspect mechanical condition
Also check for:
- Loose fasteners
- Damaged contact parts
- Worn components
- Unusual sounds
- Abnormal vibration
- Damaged guards
- Air or electrical connections, where applicable
A small mechanical issue identified before production can be considerably easier to address than a failure discovered after the line has been running for several hours.
How True Care Technology Supports Tablet & Capsule Counting
True Care Technology provides tablet and capsule counting systems designed for pharmaceutical, nutraceutical and related applications.
Its current tablet/capsule counting portfolio includes:
- Automatic Rotary Disc Type Tablet/Capsule Counting Machine
- Tablet Counting Machine
The rotary-disc system uses a rotating disc and electronic counting sensor and is designed for tablet, capsule and similar solid-dose counting applications. TCT lists features including adjustable counting speed, no-bottle/no-count/no-fill operation, stainless-steel construction, anti-vibration mounting and quick access to contact parts for cleaning.
The broader tablet counting system uses continuous counting with a vibratory tray and includes PLC/HMI controls, product-memory capability and tool-free cleaning of product-contact surfaces.
TCT's pharmaceutical solutions also connect tablet counting with other equipment such as online check weighing, metal detection and vision inspection, allowing manufacturers to consider the complete packaging and quality-control workflow.
The appropriate configuration should be selected based on the product type, tablet/capsule dimensions, bottle format, required count, production speed, cleaning requirements and downstream integration.