Introduction
Thank you for choosing the Puroma 4-Digit Combination Lock. This manual provides essential information for setting up, operating, and maintaining your new lock. Designed for security and convenience, this padlock is suitable for various applications including school lockers, gym lockers, sports equipment, fences, toolboxes, gates, cases, outdoor storage, and cabinets.
Key Features
- 4-Digit Combination: Offers 10,000 unique combinations for enhanced security, making it significantly harder to decode than 3-digit locks.
- Sturdy and Durable Construction: Made from premium zinc alloy and steel, designed to withstand daily wear and tear, and resistant to rust and corrosion.
- Outdoor Waterproof Design: Weatherproof features make it ideal for outdoor use.
- Side Window Design: Facilitates easy combination setting and viewing, allowing for one-handed operation.
- Wide Application: Versatile for gym lockers, school lockers, sports lockers, gates, sheds, and fences.
- Conveniently Portable: Compact and lightweight for easy transport and enhanced security on the go.
Setting Your Combination
The default combination for your new lock is 0-0-0-0. Follow these steps to set your personalized combination:
- Set the lock to the default code (0-0-0-0) and pull up the shackle.
- Turn the shackle counter-clockwise 90 degrees to align with the code setting gap.
- Push the shackle down firmly until the tiny pin is entirely inside the gap.
- While holding the shackle down, turn it another 90 degrees counter-clockwise. The shackle should now stay down without being pushed manually.
- Scroll the dials to set your desired 4-digit combination. Ensure the numbers are completely visible in the window.
- Turn the shackle clockwise until it pops up. Your new code is now set.
It is recommended to take a photo or write down your new combination for future reference.

Figure 1: Visual guide for setting your lock's combination.
Video 1: Official guide on how to set a new password for the Puroma Combination Lock.
Operating the Lock
To lock your item:
- Ensure the shackle is open.
- Insert the shackle through the item you wish to secure.
- Push the shackle down into the lock body until it clicks into place.
- Scramble the numbers on the dials to a random combination to secure the lock.
To unlock your item:
- Align the dials to your preset 4-digit combination.
- Pull up on the shackle to release the lock.

Figure 2: The 4-digit combination mechanism of the lock.

Figure 3: Quick-read design with numbers visible through a side window.
Care and Maintenance
- Regularly check the dials for smooth operation. If they become stiff, a small amount of lubricant can be applied.
- Clean the lock periodically with a soft, damp cloth to remove dirt and grime. Avoid harsh chemicals.
- Although the lock is weatherproof, prolonged exposure to extreme weather conditions may affect its appearance over time.
- Store the lock in a dry place when not in use for extended periods.
Troubleshooting
Unable to open by the default password (0-0-0-0)
Please confirm if the numbers 0-0-0-0 are completely in the windows of the lock. If they are, and the lock still doesn't open, we recommend trying combinations with only the numbers 0, 1, and 9, such as 0110, 0011, 0099, 0009, 9000, 0019, 0199, etc. This can help if the dials were slightly misaligned during manufacturing or initial use.
Unable to open after setting a new password
If there were no errors during the password setting process, but the lock could not be opened with your new code, it's possible the code was not fully set. For example, if your new code is 7777, please try combinations like 7776, 7778, 7767, 7787, 7797, etc. This accounts for potential slight misalignments during the setting process. Always ensure the numbers are perfectly aligned in the window when setting and opening.
Video 2: Troubleshooting tips for common issues with the Puroma Combination Lock.
Specifications
| Brand | Puroma |
| Model Name | TH10SS |
| Lock Type | Combination Lock |
| Material | Alloy Steel, Zinc |
| Item Dimensions (L x W x H) | 1.73 x 0.87 x 3.15 inches |
| Item Weight | 2.53 pounds (for 10-pack) |
| Special Features | Keyless, Portable |
| Controller Type | Combination Code |
Warranty Information
This Puroma Combination Lock comes with a 12-month warranty from the date of purchase. Please retain your proof of purchase for any warranty claims. The warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
Customer Support
If you have any questions, require assistance, or encounter any issues with your Puroma 4-Digit Combination Lock, please feel free to contact us through the Amazon platform. Our customer support team is available to help you.
