ITEMQUESTIONANSWERID
Water FiltrationWhich membrane filters the water better, a higher gallons per day output filter G.P.D(75). or a lower G.P.D.(35)?The lower g.p.d. pumps the water slower which allows more sediment to collect.16
Verti-FloWhat is the process for replacing the filter? 97
Verti-FloDoes the unit come with the filter?Yes.70
Verti FlowWhat efficiences are available for the unit?Standard is 99.99%, but other efficiencies are available at customers request.56
Verti FlowWhat is the size of the hepa filter in a verti flow for replacement purposes.It is roughly 2' x 4'57
USP 797What specifications are necessary to make a USP 797 compliant pass thru?To comply with USP 797 you need stainless steel material and an interlock system.37
T-ModWhat is the difference between the T-Mod and The Vertiflow Series?The Vertiflow has a replaceable HEPA core, while the T-Mod HEPA can not be replaced.63
Softwall CleanroomIs the class of the softwall cleanroom guaranteed?Classes or ISO Levels can not be guaranteed because we do not know the environment where the softwall cleanroom will be set up. In most classes the class quoted will hold; but the only way to guarantee a particular classs is to get certified through particle counts; which Halco can provide.35
Pass Thru'sWhat are the different doors available for a cart pass thruSwinging, Sliding, vertical roll.38
Pass Thru'sCan you flush the pass thru with one side of the wall?Yes, you can mount the pass thru however you would like in the wall. If you flush the pass thru to one side of the wall you will need support brackets for the other side, which can be supplied at customer request.72
Pass Thru'sWhat is the pro's and con's of Mechanical vs. Electrical Interlock on a pass thru.?Purely preference.39
Pass Thru'sCan you make the interlock clearance less to increase the inner dimensions.?No. It is not recommended to reduce those clearances.69
Pass Thru'sWhy is there a large dimension required between the outer and inner dimensions of the width of the pass thru?The interlock of the pass thru needs 4" of clearance.68
Pass Thru'sWill the trim add to the outer dimension of the pass thru?Trim is provided as a courtesy to close of the opening and provide a more aesthetic appearance. The trim is no fastened to the pass thru and does not have to be used, if you prefer.67
Pass Thru'sDo you provide safety glass inside the pass thru windows?Yes. At customers request.66
Pass Thru'sDo you make Fire Rated Pass Thru (Drawers)We don't make fire rated drawers (e.g. Banks, cashiers, ect. Applications but can provide a quote on stainless steel drawers.36
Pass Thru'sWhat is the standard pass thru handle hardware?Quarter turn handle is standard but a paddle latch or grab bar or standard knob can be provided.41
Pass Thru'sWhat are the electrical Specification for an electrical interlock on a pass thru?120 volt is standard but it can be made to customer spec.42
Pass Thru'sDoes the fire door on a fire rated pass thru have a positive latch?Yes, by law and code fire rated pass thru's have to have a positive latch.43
Pass Thru'sIs the glass provided for the pass thru windows?Yes the glass inside the pass thru windows is provided for all pass thru's60
Pass Thru'sare there any moving parts or anything associated with the different interlocks that would change the amount of interior space with either option?The interior of the pass thru is the same for both pass thru's,45
Pass Thru'sWhat thickness of sheetrock wall does the pass thru fit into?The pass thru can fit into anywall thickness up to the width of the pass thru. If it’s a thin wall it will need angle brackets or support brackets which are not included in a standard quote. If it is drywall is to thin the contractor must rough in an internal steel opening frame reinforcement to support the pass thru.55
Pass Thru'show does the mechanical interlock function as opposed to the electrical interlock?For the electric interlock, there is a power supply and two proximity sensors with an electric strike interlocked to prevent both doors from opening at the same time. The mechanical interlocking pass thru has a mechanical rod with spring return action to prevent both doors from opening at the same time.46
Pass Thru'sDoes the interlock system have a keyed entry?No. But it can be provided.40
Pass Thru'sDoes the fire rated Pass Thru have positive latching?Yes.77
Pass Thru'sWhat happens if the electrical interlock fails with the pass thru will the door still open?The system is fail safe on power loss, the doors will open.74
Pass Thru'sDo Pass Thru's Come preassembled?Yes.52
Pass ThruAre both Pass Thru doors able to open at the same time?Units with Interlock System will not allow other door to open until the first door is closed.10
Pass ThruWhat are the different finishes available for a pass thru? 98
Pass ThruHow Do I mount the pass thru?Mounting angles can be provided for an extra cost but are not standard. Pass Thru mounting is left to the discretion of the contractor.6
Pass ThruHow long is the fire rating for a fire rated pass thru?1 1/2 Hour Fire Rating - Minimum 1 hour - Maximum 2 hours.7
Pass ThruHow long is the fire rating on a fire rated pass thru? 93
Pass ThruDoes a fire rated pass thru have a window?Yes - 10" x 10" wire glass window8
Pass ThruDo you have a Pass Thru cut sheet?Pass thru cut sheets are supplied with a Purchase Order. Sample spec sheets are available on the website.9
Pass ThruCan I put a window next to the pass thru?The pass thru opening is framed with 2 x 4's. The pass thru is inserted in. The angle brackets provided by Halco are then drilled into the pass thru and into the 2 x 4 studs. For a window next to it, the only recommendation is a 2 x 4 inbetween the pass thru and the window.90
Pass ThruDo you provide plastic pass thru's?Yes. Polypropylene.20
Pass ThruWhat type of particleboard is the Laminated Particleboard material for the pass thru?3/4" Thick High Density particleboard - Wood core with Polypro core Liner and Laminated Melamine Exterior21
Pass ThruHow large should the rough opening be for the pass thru?Generally, For Standard Pass Thru's the rough opening should be 1/4" - For Fire Rated Pass Thru's the rough opening should be 1/2".22
Pass ThruIs the entire pass thru fire rated?Only the door is fire rated, No one in the industry make a completely fire rate unit. The door is flush mounted with a fire rated wall essentially creating a unit which is completely fire rated.25
Pass ThruHow do you mount the pass thru?Cut hole in wall 1/4" larger than outside dimensions. Insert pass thru, caulk, seal or fire stop. Install provided wall trim.27
Pass ThruHow do you mount pass thru if it is not centered in the wall and projects to one side or another?If the unit projects to one side or another you must install angle brackets or supports. These are not included unless asked for28
Pass ThruCan you have an ultra violet light installed in the Pass Thru?Yes.31
Mist ShowerDo you make misting showers?Yes, we can make a mist shower from any of our air shower models99
LightingIf lighting fixtures are mounted to a hard ceiling is a flange kit required?Lighting Fixtures come ready to be mounted to a standard T-Grid drop ceiling. If you would like a flange mounting please specify.12
LightingDo the tear drop fixtures have a universal BallastYes.44
LightingDoes the lighting fixture need to be sealed or is it bolted into place?Normally the fixture will sit on top of the T-Grid.2
LightingWhat makes the light fixture clean room rated?It is tested by a cleanroom testing company and rated to class 100 .48
LightingWhere are the gaskets located within the light fixture?There is a Gasket on the grid ,around lens, & around door.47
LightingDo the sealed troffers have a gasket between the door and the door frame?Lighting Troffers are Triple Gasketed.11
LightingHow does the lighting fixture sit in the ceiling?A standard light fixture for T-Grid mounting will sit on the Grid. If your light fixture are being mounted to a hard ceiling you will need a flange mounted which must be specified.1
LightingDo you provide paper work that the light fixtures are certified to a certain?If requested certification can be provided.51
LightingDo you ship bulbs for the light fixtures at customers request? 79
LightingWhat is the difference between a hinged and gasketed light fixture and a bolted light fixture?There is not difference in cleanliness, the hinged frame has easier access for maintenance.58
LightingAre there different options for the lens?There are different options in thickness available. The .125 Acrylic Prismatic Lens is the standard.50
LightingWhat is the lumen output for a K5-244? 78
LightingCan the light fixture be clamped on to the T-Grid?The standard troffer sits on top of the T-Grid and does not have any clamps.76
LightingDoesn't the .125 Acrylic Prismatic lens attract dust?Any plastic will attract dust. If you put a drain to ground it will discharge the fixture. Provide a braided wire between fixture and door frame. On the plastic. (RFI Shielded lens available) anistatic cleaner is also available49
Light FixturesWhat does ULC & CSA Stand for?UL = Underwriters laboratories. CSA = Canadian standards association.85
Light FixturesAre your ballast rated for UL & CSA?Yes. All ballasts are UL & CSA Rated.86
HumidifierWhy Does the humidifier cylinder leak?The O Ring is missing from the cylinder.23
Hepa Blower UnitsCan you build smaller Hepa Blower Units (8" x 8" or 12" x 12") with a motor inside of them?Yes. We can, but it is suggested to go with the FT2424 Unit because of pricing.73
Hepa Blower ModulesCan the AT2000 Unit be wired to reverse the air flow?No, the unit is not capable of reverse flow, but the FT unit is capable of reverse air flow.19
Hepa Blower ModulesWhats the difference between AT2000 & FT Blower Unit?The FT Hepa blower unit has a 1/2 h.p. horse power motor with a centrifigul blower and is capable of reverse air flow - The AT2000 has a 1/4 h.p. backward inclined fan motor and is not capable of reverse air flow.17
Hepa Blower ModulesDo you have a static pressure graph for the FT units?There is no SP chart available for this unit. Customer needs to supply what SP you need to deliver the 600 CFM we rate the unit for & then we supply the correct blower & motor to deliver that SP. The stand unit is only rated with a SP of 0.25” WG added external. The 2 x 2, due to the size restriction of the blower box is only good for an external SP of 0.15” WG. customer needs to know the “system” that these are to be used in to properly size them.59
Hepa Blower ModulesWhat is the difference between the FT Unit and the FTE Hepa blower unit?The FT is a removable core hepa which give the customer the ability to change the hepa filter. FTE, the hepa is bolted into the unit and is unreplaceable.54
Hepa Blower ModulesHow do I know how many hepa blowers I need in my cleanroom application?IT IS TOTALLY DEPENDENT ON YOUR REQUIRED CLASS AND ROOM CONFIGURATION. SEE BELOW FOR GENERAL EXAMPLE OF HOW TO CALCULATE BASED ON A SAMPLE SOFTWALL CLEAN ROOM [10,000 ENVIRONMENT] = ISO 7 OF 6' X 12' X 12' H. - BARE MININUM FOR CLEANROOM (10,000) AIR FLOW IS 20 AIR CHANGES PER HOUR (ACH) - 864 CUBIC FEET X 20 (ACH)= 17,280 CUBIC FEET PER HOUR (CFH) / 60 MINUTES = 288 CUBIC FEET PER MINUTE (CFM) - ONE PASS JOB (SOFTWALL APPLICATION) - TRIPLE AIR FLOW CHARACTERISTICS (288 X 3 = 864 C.F.M.) IS NECESSARY FOR THE ROOM = 2 HEPA BLOWER UNITS - CLOSED RECIRCULATED HARD WALL SYSTEM (HARD WALL APPLICATION) (288 X 1.25) = 400 C.F.M.) = 1 HEPA BLOWER UNIT71
Hepa Blower ModuleIs there a cord that is included on the blower units?Cords are not standard because most units are hard wired, if you would like a cord please specify, a fee may apply.15
Hepa BlowerCan any of the blower units be built for reverse flow?Yes.81
Hepa BlowerHow often should I change the filter in the hepa blower unit?Filter changing is partially based on the cleaniless of the cleanroom but some general signs are when you feel a drop in velocity of the hepa blower or in filter pressure.94
Hepa BlowerWhere are the lights located on the FT Blower Unit? 82
Edwards PartsI have multiple leaks in the bonnet?try to replace the seal, but if there are too many leaks it is best to replace the whole bonnet.26
CleanroomWhat are the specific test methods for cleanroom testing and validation?Refer to ISO 14644-3:200589
CleanroomWhat are the basic requirements for cleanroom operations?Refer to ISO 14644-5:200488
CleanroomWhat are the regulations/ rules for pharmaceutical clean room design?Refer to USP 797.87
Clean PhoneDo you have a list of chemical that you are able to wash down the clean phone with?Some suitable chemicals are: Isopropanol, Methanol, Bezanene, Acetone, Hydroogen Peroxide, Ammonia, Phosphoric Acid, & Nitric Acid.75
Clean BenchHow much weight can I put on the clean bench surface? 96
Clean BenchHow do you remove stains from the Laminate on the Clean Bench?If soap & water will not clean it, then they can try lacquer thinner or some other solvent. Worst case is to use a powdered cleaner like Comet & try to “polish” the stain out3
Clean BenchCan I get a larger work surface for my clean bench?Yes. Please specify the size which would like we will try to adapt one of our standard models to your size if possible.95
Clean BenchWhat are the general main differences between the different clean bench series (e.g. Absolute, CAT, Economy, Tabletop)? 83
Clean BenchIs there a weight limit for clean benches? 92
Clean BenchWhat difference between a horizontal and a vertical flow clean bench?The horizontal flow bench the air is sucked in the bottom and out the work surface face horizontally at the technician. The vertical flow sucks air in from the top and discharges it vertically downward toward the work surface.34
Clean BenchWhat are my options for the work surface area of the clean bench? 91
ChillerWhat is a RS232 Adapter?It’s a cord to operator the chiller from you computer.29
AT2000when do you need a prefilter and when do you need a duct connection? 64
AT2000Can I achieve +0.04 Inches of water(H2O) with an AT2000?Yes. However we recommend the FT Series Hepa Blower Units which use a larger centrifugal blower and is only slightly more money.61
AT2000Can I achieve 3-5 Air Changes per Hour (ACH)?Yes. Our unit will provide up 20 (ACH) comfortably.62
AT2000Do I still need a prefilter if I get a duct connection?If you get a duct connection the prefilter will be located somewhere in your ductwork system and you will not need one in your unit. If your unit is not ducted you are recirculating air within the room and will need a prefilter.80
AT2000What is the difference between the AT2000-1 & AT200-3?The AT2000-3 Has a replaceable filter where the AT2000-1 does not have this ability.65
Air ShowerHow long does it take to install an Air Shower?Standard air showers take three men one day using a lift truck to install.13
Air ShowerMy ceiling is to high for the standard air shower?Halco makes an air shower where the blower box normally on top is mounted on the side to lessen the height of the overall unit.84
Air ShowerIs Stainless Steel Magnetic?There are several "types" of stainless steel. The 300 series (which contains nickel) is NOT magnetic.33
Air ShowerWhich side is the access panel on? 24
Air ShowerWhat is the difference between 304 and 316 Stainless Steel?304 contains 18% chromium and 8% nickel. 316 contains 16% chromium, 10% nickel and 2% molybdenum.32
Air ShowerCan you have an ultra violet light installed in the air shower?Yes. But it is not recommended for a person to walk thru an ultra violet light.30
Air ShowerHow long does it take to install a broken down design air shower to fit through a standard door way?Broken down air showers take approximately three men two days to install using a lift truck.14