Minuteman MRS User Manual
Parts and Instruction Manual
MRS Mercury Vacuum
This manual is furnished with each new MINUTEMAN MRS Vacuum. This provides the necessary
operating and preventive maintenance instructions. Operators must read and understand this manual
before operating or servicing this machine.
This machine was designed to give you excellent performance and efficiency. For best results and
minimal cost, please follow the general guidelines below:
· Operate the machine with reasonable care.
· Follow the manufacturers suggested maintenance instructions as provided in this booklet.
· Use original Minuteman supplied parts.
Model MRS 1-4
Model No. MRS-1 MRS-2 MRS-3 MRS-4
Stainless Steel C81015-01 C82015-01 C83015-01 C84015-01
Painted C81015-03 C82015-03 C83015-03 C84015-03
Table of Contents
EXTENSION CORDS........................................................................................................................... 1
MAINTENANCE AND USAGE............................................................................................................. 1
INSPECTION........................................................................................................................................ 1
WARNING ............................................................................................................................................ 1
SPECIAL WARNING TO PURCHASER .............................................................................................. 1
ELECTRICAL....................................................................................................................................... 1
GROUNDING INSTRUCTIONS ........................................................................................................... 1
OPERA TING AND FILTER CARE INSTRUCTIONS............................................................................ 2
GENERAL INFORMATION .................................................................................................................. 2
Main Assembly MRS 1........................................................................................................................ 4
Assembly Procedure for MRS-2 AND MRS-3 ................................................................................... 5
Procedure for Cleaning MRS-2 AND MRS-3 ..................................................................................... 5
Main Assembly MRS 2 & 3 ................................................................................................................. 6
Assembly Procedure for MRS-4 ........................................................................................................ 7
Procedure for Cleaning MRS-4.......................................................................................................... 7
Main Assembly MRS 4........................................................................................................................ 8
Lid Assembly ...................................................................................................................................... 9
Lid Assembly BOM ........................................................................................................................... 10
Cloth Bag Assembly......................................................................................................................... 11
Adapter Assembly ............................................................................................................................ 12
Tank Assembly.................................................................................................................................. 13
T ank Assembly Bom......................................................................................................................... 14
Minuteman International Made Simple Commercial Limited Warranty........................................ 15
INSPECTION
Carefully unpack and inspect your machine for shipping damage. Each unit is tested and thoroughly inspected before shipment, and any damage is
the responsibility of the delivering carrier who should be notified immediately. Read all instructions carefully before operati ng.
WARNING
Models C81015-01, 03; C82015-01, 03; C83015-01, 03 Dry Only
Electrical shock could occur if used on wet surfaces. Do not expose to rain. Store indoors.
WARNING
Models C84015-01, 03, Wet and Dry
To avoid electric shock, do not expose to rain. Store indoors.
Electric motors can cause explosions when operated near explosive materials or vapors. Do not operate this machine near flammable material such
as solvent, thinner, fuels, grain dust, etc.
SPECIAL WARNING TO PURCHASER
Use of replacement filters and/or prefilters not manufactured by Minuteman International Inc. or its designated licensees, will void all warranties
expressed or implied. A potential health hazard exists without exact original equipment replacement.
CAUTION
Hazardous materials must be disposed of properly. Never throw contaminated debris in your usual trash receptacle. Place debris in a plastic bag or
can marked “HAZARDOUS MATERIALS” and take to a hazardous waste handler.
ELECTRICAL
This machine is designed to operate on a standard 15 amp. 115 volt, 60 hz, AC circuit . Voltages below 105 volts AC or above 125 volts AC could
cause serious damage to the motor.
GROUNDING INSTRUCTIONS
To protect the operator from electrical shock, this machine must be grounded while in use. This machine is equipped with an approved threeconductor power cord and grounding type plug to fit the proper grounding type receptacle.
This machine is for use on a nominal 120 volt circuit and has a grounding plug that looks like the plug illustrated in sketch A. Make sure that the
machine is connected to an outlet having the same configuration as the plug. No adapter should be used with this machine.
For equipment rated 150-250 volts: If the machine is provided with an attachment plug as shown in sketch B, it is intended for use on a 240 volt
(nominal) circuit. No adapter is available for this plug
EXTENSION CORDS
If an extension cord is used, the wire size must be at least one size larger than the power cord on the machine and must be limited to 25 feet in length.
Extension cord must be three-wire grounded.
MAINTENANCE AND USAGE
Keep the motor intake cooling air screen clean. If this screen (on top of the motor) becomes clogged, it restricts the flow of cooling air to the motor and
will cause overheating.
No lubrication of the motor is required. Machine is equipped with sealed bearings.
For optimum performance, empty and clean filter bag regularly. A clogged and dirty bag restricts the flow of air and results in reduced vacuum.
Check carbon brush periodically. Replace when worn down to approximately 1/2" in length.
Always unplug the machine when removing the motor head off the tank. This will prevent the accidental starting of the motor and the possibility of fingers
or objects getting into the unprotected impeller intake.
CAUTION
The MRS-1, 2, 3, and 4 Mercury Recovery Vacuums have been designed for the recovery of liquid mercury or mercury oxides as a result of spills. They
should not be used as conventional vacuums for every day cleaning unless it applies to the recovery of mercury contaminated debris.
When not in use the machine and all its components should be stored in a cool, dry and well ventilated room. If possible, the room should be vented to
outside air. Storing area should not have air return vent leading to air circulating central system.
Always wear the required and proper face mask, gloves and protective clothing when cleaning up a mercury spill. Check with your Health/Safety
Department or your work supervisor if you are not familiar with the use and procedure for operating a Mercury Recovery Vacuum.
Parts an d Instruction Manual
Page 1
OPERATING AND FIL TER CARE INSTRUCTIONS
The Minuteman Mercury Recovery Vacuums, MRS-1, 2, 3 and 4, have been designed to clean up liquid mercury and mercury
oxide spills. An activated charcoal canister filter is provided to absorb and contain the gas vapor given of f by the liquid mercury.
In some applications where the liquid mercury is in the presence of another dry toxic dust material, a U.L.P.A. (Ultra Low
Penetration Air) filter is also used.
Do not at any time attempt to bypass, remove, substitute, or by any other means change the filters recommended for use with
this vacuum. Use only approved Minuteman filters and filter bags.
Do not at any time, or in any way , attempt to clean or remove dust p articles that may collect or accumulate on the surface of t he
U.L..P.A. filter media.
Do not reverse or attempt to clean “prefilters” which have accumulated dust for the purpose of reusing them.
Since liquid mercury gives off a gas vapor, you are required to remove all traces of it within the vacuum tank assembly and the
mercury separator after each use and prior to storing the vacuum. Any mercury residue left in the vacuum will continue to give
off vapor which will be absorbed by the charcoal filter, thereby reducing the life of the charcoal filter.
Remove disposable collector bag and prefilters at the end of each cleanup period.
The efficiency of your vacuum will be determined by the amount and the density of the material you are vacuuming. All vacuums
will lose efficiency as they become filled. The operator must, therefore, be the one to determine the frequency for emptying and
changing filters based on the efficiency and performance of the vacuum during the cleaning process.
GENERAL INFORMATION
The charcoal filter supplied with your Mercury Recovery V acuum is a specially activated, impregnated carbon design to increase
the absorbent capacity for mercury vapor gases. The life of the charcoal canister is determined by the volume of mercury vapor
it is exposed to. To maximize the life of the charcoal filter, always store them in an air tight bag when not in use.
The vacuum lid assembly is equipped with a timer which will record actual running time of the unit. The timer is not resetable,
therefore, you are required to keep a permanent log book to indicate each replacement of the charcoal filter.
The log will give the vacuum operator a record of the life span of each filter and approximate time for changes.
Monitoring the exhaust air with vacuum running is the only accurate way to determine the continued efficiency of the
charcoal filter.
When not in use, your Mercury Recovery Vacuum and all its components should be stored in a cool, dry and well ventilated
room. If possible, the room should be vented to outside air. S toring area should not have air return vent leading to air circulating
central system.
Parts an d Instruction Manual
Page 2
ASSEMBLY PROCEDURE FOR MRS-1
See Main Assembly MRS 1
1. Tank assembly is equipped with intake down tube for attaching disposable collector bag.
2. Carefully open the folds of disposable collector bag No. 8 and insert into tank.
3. Place the cardboard collar onto the intake tube and carefully pull the collar over the tube until the rubber gasket is past
the ring on the end of the tube.
4. Take the paper filter protector No. 7 and insert it into the tank. Snap the elastic band around the rim of the tank. allow
two inches to overlap the tank rim.
5. Place the white Dacron filter into the tank. Snap the elastic band around the rim of the tank in the same manner as the
filter protector.
6. Place bag frame No. 5 down into the Dacron filter.
7. Install adapter assembly No. 4 on top of tank as shown.
8. Assemble charcoal filter module:
a. Place holder assembly No. 2 with rim gasket down, clamps up, on table.
b. Remove any plastic wrapping from charcoal canister No. 3.
c. Place canister into holder with cover toward the seating gasket.
d. Position latches over the rim of the canister and snap down one at a time.
9. Place charcoal module assembly into the tank with gasket seating around adapter rim.
10. Place the vacuum motor lid assembly No. 1 onto the tank making sure it seats all the way around and engage
lid latches.
11. Screw collector jar No. 11 onto separator No. 10.
12. Insert separator onto tank intake.
13. Press the hose end without cuff onto the intake of the separator.
14. Assemble the wands and curved ends with floor tool on one end and hose adapter on other end. Attach this wand
assembly to end of vacuum hose.
15. Plug in electric cord and turn vacuum on. Spray aerosol anti-static spray in through floor tool for 2 to 3 seconds. Antistatic spray will coat the inside of the wand assembly hose and separator, reducing static electricity during liquid
mercury pickup.
PROCEDURE FOR CLEANING MRS-1
1. Remove wand assembly or other pickup tools from hose; disassemble and place in plastic bag.
2. Remove hose from separator, insert plugs provided at each end, and place in plastic bag with tools.
3. Remove jar from separator, then cap jar and store in safe place.
4. If separator is left on vacuum, plug all openings with caps provided.
5. Unplug electric cord from electric service and remove vacuum lid assembly.
6. Before removing charcoal filter module, take the elastic band of the Dacron filter bag and snap it over the rim gasket
of the module.
7. T o remove filter bag protector, reach down to the bottom of the filter, pull up on the center of the bag so you are turning
it inside out. Pull up as far as possible and carefully remove the elastic band around the rim of the tank without allowing
it to snap off. Crumple the filter bag into a tight ball and place it in a disposable plastic liner bag.
8. Reach into the tank and gently push the collar of the filter bag down and off the intake tube. Place one of the “mercury
caution decals” over the bag opening and carefully remove the disposable filter bag from the tank. Place in plastic liner
bag with other contaminated debris.
9. Using damp disposable paper towels or rags, wipe down the inside of tank assembly . Place wipers in plastic liner bags.
10. All traces of mercury residue must be removed prior to storing Mercury Recovery Vacuum. Inside of tank should be
checked with a “snifter” or comparable air measuring device to determine if all traces of mercury have been removed.
11. Re-assemble vacuum following procedure above on Page 3. Using a “snifter” or other air measuring device, plug in
electric cord and turn on vacuum. Monitor the exhaust air coming through the vacuum with all filters in place. The
highest safe exposure concentration level is 0.05 mg/M3. Any reading above this level coming through the exhaust
would indicate that the charcoal filter requires changing.
12. When charcoal filter is replaced, dispose of canister in same plastic bag with other contaminated debris. (DO
NOT STORE NEAR HEAT OR BURN ANY MERCURY CONT AMINATED ITEMS.)
Parts an d Instruction Manual
Page 3
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