Parts and Instruction Manual
MRS-6 Maxi-Guard II
Mercury Vacuum
This manual is furnished with each new MINUTEMAN MRS-6. 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-6
Model No. C86006-11
C86006-12
C86006-13
C86006-14
Table of Contents
Inspection............................................................................................................................................ 1
Electrical.............................................................................................................................................. 1
Grounding Instructions...................................................................................................................... 1
Extension Cords ................................................................................................................................. 1
Maintenance and Usage..................................................................................................................... 1
Operating and Filter Care Instructions ............................................................................................. 2
Procedure for Cleaning MRS-6 After Use ......................................................................................... 2
Options ................................................................................................................................................ 2
Changing the Charcoal Filter............................................................................................................. 2
Exploded Views .................................................................................................................................. 3
Main Assembly ................................................................................................................................ 3
Lid Assembly ................................................................................................................................... 4
Lid Assembly BOM .......................................................................................................................... 5
Tank Assembly ................................................................................................................................ 6
Minuteman International Made Simple Commercial Limited Warranty.......................................... 7
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 operating.
WARNING
Electrical shock could occur if used on wet surfaces. Do not expose to rain. Store indoors.
Electrical motors can cause explosions when operated near explosive materials or vapors. Do not operate this machine
near flammable materials such as solvents, thinners, fuels, grain dust, etc.
CAUTION
Hazardous materials must be disposed of properly. Never throw cont aminated 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 - 115 Volt
This machine is designed to operate on a standard 15 amp. 115 volt, 60 hz, AC circuit. Voltages below 105 AC or above
125 volts AC could cause serious damage to the motor.
Electrical - 240 Volt
This machine is designed to operate on a standard 10 amp. 230 volt, 50 hz, AC circuit.
Grounding Instructions
To protect the operator from electrical shock, this machine must be grounded while in use. This machine is equipped with
an approved three-conductor 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 st arting of the motor
and the possibility of fingers or objects getting into the unprotected impeller intake.
CAUTION
The MRS-6 Mercury Recovery V acuum has been designed for the recovery of liquid mercury or mercury oxides as a result
of spills in small quantities. It should not be used as a conventional vacuum for every day cleaning unless it applies to the
recovery of mercury contaminated debris. When not in use, the machine and all of 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 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 Instructio n Manu al
Page 1
Operating and Filter Care Instructions
(Refer to “Main Assembly”)
1. Tank assembly is equipped with low intake on outside and 2" tube inside.
2. Carefully open the folds of the disposable collector bag No. 3 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
4. Place the charcoal filter holder assembly No. 2 onto the rim of the tank making sure that the gasket seats fully
5. Place the motor lid assembly No. 1 onto tank, making sure it is seated.
6. Snap on lid latches from tank to vacuum lid.
7. Install hose assembly onto tank intake.
8. Attach vacuum tools to be used.
9. Plug electric cord into wall receptacle and turn on vacuum.
10. With vacuum on, spray anti-static spray (PN 920372) into end of pickup tool. This will coat the tool and hose to
11. Your MRS-6 is now ready for use.
is past the ring on the end of the tube.
around the tank.
reduce static electricity.
Procedure for Cleaning MRS-6 After Use
1. Remove hose and insert plugs provided at each end.
2. Place hose and tools used into plastic bag and seal with ties.
3. Unplug electric cord and remove vacuum lid from tank assembly.
4. Remove charcoal filter assembly from tank and store in an air tight bag to maximize filter life.
5. Reach into tank and gently push the collar of the filter bag off the tube, seal bag opening with adhesive backed
“Mercury Caution Decal” provided, and carefully remove collector bag from tank.
6. Place collector bag into plastic bags provided.
7. Use dampened disposable wiper towels or cloth to wipe down inside of tank assembly. Place wipers in plastic
bag for disposal.
8. Inside of tank should be checked with “snifter” or comparable air measuring device to determine if all traces of
mercury have been removed. Any mercury residue left in the tank assembly may result in rapid deterioration of
the charcoal filter.
9. Reassemble vacuum according to the Main Assembly. With vacuum assembled and all filters in place, plug in
electric cord and turn vacuum on. Take a snifter reading of the air exhausted around the motor lid assembly to
determine if charcoal filter requires replacing. The highest safe exposure concentration level is 0.05 mg/M3.
Any reading above this level would require a charcoal filter change.
10. Contaminated charcoal filters must be disposed of in the same manner as the collector bag you removed from
the vacuum. Check with your Health/Safety Department for proper disposal procedures. (DO NOT HEAT OR
BURN ANY MERCURY CONTAMINATED ITEMS.)
Options
1. Mercury separator No. 5 with jar No. 6 can be used with MRS-6 for purpose of collecting and separating
mercury from debris.
2. Tank stand No. 7 is required to elevate vacuum when mercury separator is used.
3. Wheel bracket assembly No. 750003 for mounting MRS-6 vacuum is available for increased portability. Wheel
bracket cannot be used with mercury separator and tank stand.
Changing the Charcoal Filter
1. Place charcoal filter module upside down on table covered with paper.
2. Remove eight retaining screws.
3. Remove holder cover.
4. Remove charcoal filter canister and place in disposable plastic bag.
5. Check sealing gasket, replace if broken.
6. Place new charcoal filter with cover down onto module.
7. Replace cover and screws, fasten screws evenly by using crisscross pattern.
8. Dispose of paper on workbench with charcoal filter canister.
Parts an d Instructio n Manu al
Page 2
Exploded Views
Main Assembly
Parts an d Instruction Manual
Page 3
Lid Assembly
Parts an d Instruction Manual
Page 4
Lid Assembly BOM
Item Part No Qty Description
1 750415 1 Dome
2 750000 1 Assembly Motor Hold Down
3 380001-4 1 Motor, 120V ECM
3A 380054 1 Motor, 220V
4 380063POL 1 Lid Only
5 750553 1 Assy. Filter Module
6 381020 1 Cord Set, 16-3, 50'
7 380005 2 Brush, Carbon Replacement ECM
7A 380028 2 Brush, Carbon Replacement
8 380002 1 Switch, Toggle 1.5 HP
9 101020 1 Plate, Off/On Indicator
10 711556 1 1/2 Lock Washer
11 380004 1 Relief, Strain
12 380064 1 Ring, Foam
13 290017 2 Gasket , Vac Motor
14 130040POL 1 Handle, Polish
15 380044 1 Lid Gasket Only
16 380040 1 Felt, 25 X 2.5 X 25
17 380061 4 Bushing
18 380037 4 Bushing
19 710360 4 SCR-MC 10-32 X 1.00 ST PL
20 710353 1 SCR-MC 10-32 X .37 ST PL
21 711310 4 Nut-Hex 10-32 St Pl
22 711543 5 WSR-Helical SPR Loc #10
23 762037PTD 1 Filter Holder Includes
24 762035PTD 1 Filter Retainer
25 750555 1 Mercury Vapor Canister
26 805042 1 Gasket
27 762141 1 Gasket
28 710357 1 SCR-MC 10-32 X .75
29 711543 1 WSR-Lock #10
30 711202 2
*** 389120 1 Lid Assy. Complete 1 15V
*** 389220 1 Lid Assy. Complete 220V
BLT-HH 1/4-20 X .50 STL ZINC
Parts an d Instruction Manual
Page 5
T ank Assembly
Parts an d Instruction Manual
Item Part No Qty Description
1 390087 1 Gasket
2 500033 1 Knob
3 711503 4 Washer - Flat #10
4 711915 4 Rivet .19 X .28 X .37 HD STNI
5 712638 2 Nut-Hex 10-24 SS Nyloc
6 712824 2 SCR-THMS 10-24 X .75 SS
7 750118 1 Intake Tube Assembly
8 761054 2 Latch
9 900039 1 Intake
10 900093 1 Tank, 6 Gal. SS Low Intake
10A 900092 1 Tank, 6 Gal. PTD Low Intake
*** 384003PKG 1 Disposable Paper Bag (10)
*** 762237PKG 1 Plastic Bags (10)
Page 6
Minuteman International Made Simple Commercial Limited Warranty
Minuteman International, Inc. warrants to the original purchaser/user that the product is free from defects in
workmanship and materials under normal use. Minuteman will, at its option, repair or replace without charge, parts
that fail under normal use and service when operated and maintained in accordance with the applicable operation and
instruction manuals. All warranty claims must be submitted through and approved by factory authorized repair
stations.
This warranty does not apply to normal wear, or to items whose life is dependent on their use and care, such as belts,
cords, switches, hoses, rubber parts, electrical motor components or adjustments. Parts not manufactured by
Minuteman are covered by and subject to the warranties and/or guarantees of their manufacturers. Please cont act
Minuteman for procedures in warranty claims against these manufacturers.
Special warning to purchaser -- Use of replacement filters and/or prefilters not manufactured by Minuteman or its
designated licensees, will void all warranti es expressed or implied. A potential health hazard exits without original
equipment replacem ent .
All warranted items become the sole property of Minuteman or its original man ufa cturer, whicheve r the case ma y be.
Minuteman disclai ms any implied war ranty, including the warranty of merchantability and the warranty of fitness f or a
particular purpose. Minuteman assumes no responsibilit y fo r a ny specia l, incidental or consequential damages.
This limited warranty is applicable only in the U.S.A. and Canada, and is extended only to the original user/purchaser
of this product . Customers outside the U.S.A. and Canada should cont act t heir local distributor for export warranty
policies. Minuteman is not responsible for costs or repairs performed by persons other than those specifically
authorized by Minuteman. This warranty does not apply to damage from transportation, alt erations by unauthorized
persons, misuse or abuse of the equipment, use of non-compatible chemicals, or damage to property, or loss of
income due to malfunct io ns of th e product.
If a difficulty develops with this machine, you should contact the dealer from whom it was purchased.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state. Some
states do not allow the exclusion or limitation of special, incidental or consequential damages, or limitations on how
long an implied warr anty lasts, so the above exclusions and limitat i ons m ay not apply to you.
Cord Electric Group………. Three years parts, two years labor, ninet y days travel (Not to exceed tw o hours)
Exceptions………. Port-A-Scrub, one year parts, six months labor
MPV 13, one year parts
MPV 14 and 18, two years parts, one y ear labo r
RapidAir blower, one year parts, one year labor
Explosion-Proof Vacuum, one year parts, one year labor
Pneumatic Vacuums, three years parts, one year labor
EX 12 and EX12H, one year parts, one year labor
Battery Op er ated Group ….. Three years parts, two years labor, ninety days travel
(Not to exceed two hours)
Exceptions……Sweepers, one year parts, one year labor, ninety days travel
(Not to exceed two hours )
Internal Combustion Group….One year parts, one year labor, ninety day travel
(Not to exceed two hours)
Replac ement Parts……………..N i nety days
Batteries………………………….0-3 months replac em ent, 4-12 months pro-rate
Polypropylene Plastic Tanks…Ten years, no additional labor
111 South Rohlwin g Ro ad · Addison, Illi nois 60101 USA
Phone 630- 627-6900 · Fax 630- 627-1130
E-Mail, www.minutemanintl.com
A Member of the Hako Gr oup
987844
Rev A 05/07
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