PMPR-3SH Instruction Manual

1.    Safety Warnings

• Continuous Use Warning: The respirator fitted with the blower unit and filter elements must be worn correctly and continuously during exposure to contaminants. Incorrect use or removing the respirator while exposed to a contaminated environment may lead to excessive inhalation of harmful particles, resulting in severe illness, chronic injury, or death.

• No Modifications: Modification, misuse, incorrect use, or alteration of the respirator facepiece, filters, or blower/purifier unit is strictly prohibited.

• Prohibited Environments:

  Do not use when contaminant concentrations are unknown or reach IDLH (Immediately Dangerous to Life or Health) levels.

  Do not use when contaminant concentrations exceed limits set by local occupational safety and health regulations.

  Oxygen Deficiency Warning: This product does not supply oxygen! Do not use it in environments where oxygen levels are below 19.5%.

  Not for use in confined spaces or atmospheres where the contaminant composition or oxygen level is unknown.

• Non-Intrinsically Safe Warning: The blower unit and battery assembly are NOT intrinsically safe (explosion-proof). Strictly prohibited for use in environments containing flammable or explosive gases, vapors, or volatile solvents. Internal electrical components may cause ignition, fire, or explosion, leading to severe injury or death.

• Immediate Evacuation: If you detect the odor or taste of contaminants, or feel dizzy, experience irritation, or any other discomfort while using the respirator, immediately leave the contaminated area.

• Scope of Protection:  This product is designed to provide respiratory protection against certain airborne particulate matter when used with the HEPA filter, and may help reduce certain nuisance odors when used with the activated carbon layer. It does not provide protection against all air contaminants. This product is not a medical device and is not intended for medical diagnosis, patient care, infection control, or other clinical protection uses.

• This product is not NIOSH-certified and is not a substitute for NIOSH-approved respirators.

2.  Component Identification

The system mainly consists of two core modules: the PMPR-3 Blower/Purifier Unit and the PR-3 Half Facepiece. The main components are defined below:

2.1 Purifier Unit & Accessories

1. Charging cable

2. Filter cover

3. Activated carbon filter

4. H13 HEPA filter

5. Micro fan

6. Li-Po battery

7. Purifier cartridge

   7-1. LED Indicator & illumination

   7-2. Control button

   7-3. Cover buckle

   7-4. Charging port (Type-C)

2.2 Half Facepiece Body

8. Respirator

   8-1. Head harness

   8-2. Inhale valve

   8-3. Exhale valve

   8-4. Gasket

3. Installation & Donning

3.1 Filter Media Assembly

Ensure the device power is turned off before performing any installation. When replacing filters, do not touch the micro-fan inside the circular opening to prevent damage to the blades.

1. Hold both sides of purifier cartridge and gently open cover buckle to remove filter cover.

2. H13 HEPA：Take HEPA filter out from packing bag and place into rectangle slot on purifier cartridge, surrounding by O-ring, with filter’s tab facing out.

3. Activated carbon：Take out activated carbon from packing bag and place it into the inner side of filter cover.  

4. Align hole on top edge of filter cover with lugs on purifier cartridge and press bottom buckle until hear a "click" sound to secure it.  

   Filter Replacement Schedule Recommendation: It is generally recommended to replace the HEPA filter every 1 to 2 weeks, and no longer than 4 weeks. It is recommended to replace the HEPA filter based on actual working conditions. Replacement frequency will vary depending on dust concentration, exposure time, and environment. In heavy dust environments, more frequent replacement may be required. Regardless of elapsed time, if the filter becomes discolored, airflow significantly drops, or breathing resistance increases, it must be replaced immediately.

3.2 Purifier & Facepiece Connection

When installing the purifier unit, always follow the designated bayonet direction to ensure proper installation and sealing.

1. Hold respirator and purifier cartridge with both hands, align "JK2L" (on top cover) with "Unlock" (above intake port), and press firmly.

2. Rotate the purifier cartridge clockwise as indicated by arrow until "JK2L" reaches the "Lock".

3. To uninstall the purifier cartridge, rotate it counterclockwise until "JK2L" aligns with the "Unlock", then remove the purifier cartridge.

4. To ensure optimal airflow efficiency, this system is shipped without pre-installed inhalation flaps on the internal valve seats. If your workplace safety protocol requires it or if you wish to reduce the intake volume, you can manually install the optional inhalation valve flaps onto the internal seats.

3.3 Donning & Fit Adjustment

Do not use this product if facial hair, a beard, or any other condition prevents a tight seal between the face and the respirator sealing surface.

1. Place head cradle at back of head. Pull strap downward and backward to ensure respirator fully covers your mouth and nose.

2. Pull lower strap to back of neck, secure it with buckle, and adjust tension for optimal seal and visibility. Repeat if necessary.

3. Tighten lower strap to adjust upper tension, ensuring both side straps are evenly tightened. Adjust respirator position for comfort.

4. Pre-Use Inspection

• Before donning the system and entering any work area, users must conduct the following pre-use inspection. Do not use the respirator if any parts are missing or if it fails the inspection.

• l   Visual Integrity Check: Carefully inspect the half facepiece, purifier unit, Type-C dust plug, and filter cover. Ensure there are no cracks, tears, dirt, or missing components.

• l   Material Aging Check: Check the facepiece, especially the silicone sealing face-seal edge. Ensure the material remains soft and free of deformation. Do not use if the silicone is stiff, hardened, or cracked.

• l   Valve Function Check: Inspect inhalation and exhalation valve flaps for warping, cracking, or tearing. Gently lift the flaps to ensure the valve seats underneath are clean and free of dust build-up.

• l   Structure and Filter Verification: Ensure the head harness has good elasticity and no breaks, and that the connection gasket is properly installed and undamaged. Confirm that the H13 HEPA filter is sealed in the rectangular slot (pull tab facing outward) and that the filter cover is clicked and locked firmly.

• Power and Battery Test: Press the control button to test turning on the device. Confirm the micro-fan runs smoothly without unusual noises or burning smells. Observe battery status: if the unit immediately emits 3 short beeps and flashes a red light upon turning on, the battery is critically low. Fully charge it before use.

5. Operating Instructions

The blower unit utilizes a single-button cyclic control. The operation logic, indicator lights, and audio alerts are detailed below:

5.1 Fan Speed Adjustment

• Power On / Turbo wind Mode: Indicator light shows Blue, accompanied by 1 short beep.

• Strong wind Mode: Indicator light shows Yellow, accompanied by 2 short beeps.

• Power Off: Indicator light flashes White twice, accompanied by 1 long beep.

• Note: While the fan is operating, a chasing light pattern will display the current fan speed setting every 5 minutes.

• Control Cycle: Each single press of the control button cycles through the settings sequentially: Turbo wind > Strong wind > Power Off.

5.2 Auxiliary Lighting Mode

• Turn On / Off Light: Under any operating status, press and hold the control button for 3 seconds to turn the auxiliary lighting function on or off.

5.3 Low Battery Warning

• When the battery power is nearly exhausted, the purifier unit will trigger a safety alarm: it will emit 3 continuous short beeps and simultaneously flash the Red light 3 times. This alert sequence will repeat every 2 minutes.

6. Battery & Charging

6.1 Safe Charging Operations

• Power Specifications: The charging input specification for this product is DC 5V / 1A. Use the factory-supplied charging cable or charging equipment that strictly meets USB DC 5V output requirements. Do not use damaged, modified, or unauthorized charging equipment. Supplying voltage exceeding specifications may shorten battery life or damage internal control circuitry.

• Operation Method: Open the dust-proof silicone plug of the Type-C port and insert the charging connector. Do not use excessive force when plugging or unplugging to prevent damage to the internal structure.

• Charging Environment Limits: Charge the battery in a dry, well-ventilated environment within a temperature range of 0°C to 45°C (32°F to 113°F). Do not charge in high temperature, high humidity, direct sunlight, or near heat/fire sources. Keep away from flammable or explosive materials during charging.

• Abnormal Emergency Handling: If the charging process interrupts abnormally, or if the unit generates excessive heat, emits an odor, smokes, or the housing swells/deforms, immediately disconnect the power source and stop charging.

6.2 Charging Indicators

• During charging, the front indicator light will operate in a breathing flash mode, incrementally displaying colors based on the current charging progress:

  Red (Level 1 Charge) > Yellow (Level 2 Charge) > Blue (Level 3 Charge) > Green (Level 4 Full Charge).

• Charging Complete: When the battery is fully charged, the indicator light will stop flashing and remain Solid Green, accompanied by 1 long beep. The charging cable can then be safely unplugged.

6.3 Long-Term Storage Maintenance

• The purifier unit contains a non-removable lithium polymer battery. Disassembling, puncturing, impacting, or altering it is strictly prohibited. Do not expose it to excessive heat, moisture, or direct sunlight.

• Fully charge the battery before first use. If the device is scheduled for long-term storage, it must be fully charged prior to storage and subsequently recharged every 2 to 3 months to prevent the battery from locking up or deteriorating due to excessive self-discharge.

6.4 Battery Recycling

• At the end of this product's lifespan, dispose of the device body and its built-in lithium battery in accordance with local environmental regulations.

• Strict Prohibition: Never dispose of the purifier unit in regular household waste or incinerate it. Contact your local recycling center, environmental protection agency, or authorized facility for professional recycling to conserve natural resources and prevent chemical leakage.

7. Cleaning & Storage

7.1 Purifier Unit Restrictions

• Before wiping down the outer housing, you must ensure that the Type-C USB charging port dust-proof silicone plug is fully pressed in and tightly sealed. Moisture, liquid, industrial dust, or metal shavings entering the internal casing due to an unsealed dust plug will be deemed user negligence and voids the warranty.

• Prohibited Actions:

1. The purifier unit and battery are NOT waterproof. Never immerse the host unit in water or any liquid, and do not allow liquids to flow into the air inlets or outlets.

2. NEVER use compressed air gun to clean the interior of the fan, charging port, or buttons. The high-pressure airflow will force dust or moisture into the core electronics and damage the fan blades.

3. NEVER use a vacuum cleaner or compressed air gun to clean the HEPA filter for reuse. This destroys the microfiber matrix structure and severely degrades respiratory protection performance.

• Correct Cleaning Method: Use a soft cloth dipped in a mixture of clean water and mild neutral detergent (recommended pH neutral, fragrance-free, dye-free), wring it out until slightly damp, and carefully wipe the outer housing. Ensure all electrical contact areas and the main body are completely dry after wiping.

• No Organic Solvents: Do not use toluene, paint thinners, alcohol, or abrasive cleaners, as these chemicals can weaken, deform, or crack the plastic housing structure and accelerate component aging.

7.2 Filter Hygiene Protocol

• When replacing with a new H13 HEPA filter, clean out any dust accumulated in the surrounding retention slot of the purifier body first. This prevents debris from falling into the internal air channel and causing secondary contamination.

7.3 Facepiece Washing Procedure

• Pre-Disassembly: Before washing the half facepiece, the blower/purifier unit and filter elements must be detached (the blower unit and filters are strictly non-washable). If necessary, carefully remove the inhalation/exhalation valve flaps, head harness assembly, and connection gasket. Do not attempt to disassemble other fixed parts.

• Washing and Drying: Immerse the washable facepiece parts in warm water not exceeding 60°C (140°F) mixed with a neutral detergent. Clean gently with a soft bristle brush. Thoroughly rinse all components with clean water to completely remove any residual chemical detergent. Allow the parts to air dry completely in a cool, clean environment away from contaminants.

7.4 Storage Specifications

• No Direct Storage: Do not place an uncleaned blower unit directly into a storage bag or toolbox. Complete the exterior cleaning before packing to avoid residual dust circulating inside the container and settling into the blower core.

• Environmental Parameters: The facepiece and purifier unit must be stored away from particulates, chemicals, and direct sunlight.

  Storage Temperature Range: -20°C to 40°C (-4°F to 104°F)

  Storage Relative Humidity: < 80%

• Deformation Prevention: When storing the facepiece, lay it flat. Heavy objects must not be stacked on top of it. Avoid placing any stress, compression, or twisting on the facepiece body (especially the face-seal cushion), otherwise irreversible damage and shape deformation will occur.

• Shelf Life: Under compliant standard storage conditions, the facepiece has an un-opened shelf life of 5 years.

9. Warranty & Liability

9.1 Warranty Period

JK2L Co., Ltd. (hereinafter referred to as "the Company") warrants that the PMPR Mini Powered Respirator and its original components are free from defects in materials and manufacturing workmanship at the time of shipment and purchase. Under conditions of normal use and compliance with all maintenance principles in this manual, the buyer is entitled to the following limited warranty services from the date of purchase (the start date is determined by the date printed on the official invoice or proof of purchase):

PMPR-3 Blower/Purifier Unit Main Body (excluding filter consumables): Provides a 6-Month Limited Warranty for repair or replacement service.

9.2 Warranty Service

If a defect in material or manufacturing workmanship is verified within the warranty period by the Company's after-sales technical support center, the Company will be responsible for repairing or replacing the defective component free of charge. The maximum civil liability or replacement value assumed by the Company shall not exceed the original purchase price of the product.

9.3 Warranty Exclusions

The limited warranty will be void, or services will be rendered at a fee, under the following circumstances:

1. Damage to the mechanical structure or housing fractures caused by improper use, human abuse, physical impact, accidental drops, or heavy compression.

2. Unauthorized disassembly of the housing, alteration of internal circuitry, changes to the charging structure, or any self-attempted repair marks detected by our technical support center.

3. Failure to clean and maintain the device in accordance with the mandatory instructions of this manual, leading to ingress damage (e.g., failing to seal the Type-C dust plug, immersing the unit in water, exposing it to rain, or cleaning the fan and HEPA filter with compressed air or vacuum cleaners).

4. This warranty does not cover consumables, accessories, or fabric components under normal wear and tear, including but not limited to: H13 HEPA filters, activated carbon pre-filters, the silicone face-seal cushion, inhalation/exhalation valve flaps, the elastic head harness, and the storage bag.

9.4 Limitation of Liability

Except for the limited warranty obligations explicitly stated above, the Company shall not be legally liable for any direct, indirect, incidental, special, or consequential damages (including but not limited to loss of operation time, project delays, loss of expected business profits, business interruption losses, or loss of commercial reputation) arising from the purchase, use, misuse, or unintended malfunction of this product, even if advised of the possibility of such damages.

PuriCurrent Mini Powered Respirator System – Instruction Manual-R1.1