MSA C420 User Manual

The warranties made by MSA with respect to the product are voided if the product is
not used and serviced according to the instructions in this manual. For any additional
information relative to use or repair, write or call 1-800-MSA-2222 during regular
working hours.
See separate insert for NIOSH Approval Information.
P/N 10071373 (PAPR), P/N 10080165 (PAPR/CBRN)
C420
Powered Air-
Purifying Respirator
Industrial Application
CBRN Application
TAL 706 (L) Rev. 2 © MSA 2007 Prnt. Spec. 10000005389(A) Mat. 10072074
Doc. 10072074
THIS MANUAL INCLUDING THE WARNINGS AND CAUTIONS INSIDE, MUST BE READ
AND FOLLOWED CAREFULLY BY ALL PERSONS WHO HAVE, OR WILL HAVE, THE
RESPONSIBILITY FOR USING OR SERVICING THE PRODUCT. These respirators will per-
form as designed only if they are used and serviced according to the instructions.
OTHERWISE, THEY COULD FAIL TO PERFORM AS DESIGNED, AND PERSONS WHO
RELY ON THESE RESPIRATORS COULD SUSTAIN SERIOUS PERSONAL INJURY OR
DEATH.
INSTRUCTIONS

MSA C420 Specifications

General

Model	C420
Manufacturer	MSA
Certification	NIOSH approved
Usage	Industrial
Filter Type	Compatible with a wide range of MSA filters and cartridges
Approval	NIOSH

Summary

General Description

Respirator Use Limitations

Specifies maximum use concentrations and regulatory limits for the respirator.

Exposure Limits

Lists acceptable exposure limits from various health organizations.

Exposure Limits for Mixtures

Explains how to determine TLV for mixtures of contaminants.

Preparing the C420 PAPR for Use

Checkpoints Before Use

Essential checks to perform on the respirator before use.

Installing the Waistbelt

Step-by-step guide for attaching and adjusting the waistbelt.

Installing the Battery Pack

Instructions for installing the LI-SO2 and NiMH battery packs.

Airflow Test (Less Cartridges)

Testing blower operation using the airflow indicator without cartridges.

Installing/Replacing the Cartridges

Procedure for correctly installing or replacing filter cartridges.

Airflow Test (With Cartridges Installed)

Performing the airflow test with cartridges installed for proper function.

Installing the Breathing Tube

Steps to attach the breathing tube assembly to the blower.

Attaching the Breathing Tube Assembly to the Facepiece

Connecting the breathing tube outlet to the facepiece inlet securely.

Donning and Use

Donning

Instructions for properly putting on the respirator and ensuring a correct fit.

Negative Pressure Seal Test

Procedure to verify the facepiece-to-skin seal is airtight.

Using the C420 PAPR

Guidelines for operating the PAPR in a hazardous atmosphere.

Conducting an In-Use Flow Test

Checking airflow during use to ensure continued protection.

Removing the Respirator

Decontamination

Procedures for decontaminating the respirator before removal.

Cleaning and Inspection

Cleaning and Disinfecting

Methods for cleaning and disinfecting all parts of the respirator.

Inspection

Checking components for wear, damage, or proper condition.

Storage

Storing the Respirator

Properly sealing and storing the respirator unit.

Storage for CBRN Application Only

Specific storage requirements for cartridges in CBRN applications.

Storing the Batteries

Optimal conditions and methods for storing batteries.

Charging the C420 Rechargeable Battery

Cartridge and Battery Disposal

Cartridge Disposal

Instructions for proper disposal of used cartridges according to regulations.

Battery Disposal

Guidelines for disposing of LI-SO2 and NiMH batteries safely and properly.

Recertification

Warranty

Mine Safety Appliances Company General Express Warranty and Terms of Sale

Details the express warranty and terms of sale for the product.