GUARDIAN® II Gas Screen Printing Conveyor Dryer


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AIR HANDLING
  • Blowers hold down even the lightest substrates
  • Enhanced airflow accelerates drying/curing
  • Exhaust Blower evacuates up to 50 970 l/min (1800 cfm)
  • Heat efficiency system reduces operating expenses by using outgoing combustion gas to heat incoming air
  • High-volume circulation blower reduces energy costs
  • Stainless steel filter slides out for easy cleaning
  • Three separate dedicated blowers (combustion, circulation & exhaust)
CERTIFICATION
  • CE Certified: Built to specifications established by the European Committee for Standardization® (CE)
  • CSA Certified: Built to specifications established by the CSA Group (models sold in Australia are AGA Certified: Built to specifications established by the Australian Gas Association)
  • UL Listed: Built to specifications established by Underwriters Laboratories® (UL)
CONTROL CENTER
  • Automatic shutdown sequence keeps the blower and belt running until the conveyor dryer chamber has cooled
  • Control panel rotates for visibility and access
  • Digital keypad with digital display
  • Temperature monitor issues visible and audible alarms when readings fall outside user-specified parameters
  • Tower light indicates when temperatures are within user-set tolerances
CONVEYOR SYSTEM
  • Conveyor dryer belt is made of heat-resistant, Teflon®-coated fiberglass
  • Digital belt speed readout makes it easy to duplicate conveyor dryer speed settings
  • Driven by a reliable, heavy-duty, variable-speed DC motor
  • Large anodized aluminum rollers are crowned for positive belt tracking
  • Patriot Belt™ with the SureTrak™ roller system features a heat-resistant, Teflon®-coated fiberglass belt with a red flexible bead stitched along one edge that rides in grooves machined into the large anodized aluminum rollers, providing the most precise belt tracking available (U.S. Patents Pending: SN 15194035 & 15265538)
  • Standard belt speed: 91 to 1554 cm (3’ to 51’) per minute
DESIGN & CONSTRUCTION
  • Adjustable entry/exit openings
  • Air-cooled cabinet ensures long life for electrical components
  • Bearings are designed for high speeds and high temperatures
  • Circuit breakers allow easy reset
  • Low-profile design makes it easier to see over the screen printing dryer
  • Modular design and specialized fasteners make it easy to attach additional heat chamber units
ENERGY EFFICIENCY
  • Burners are designed with excess capacity that far exceeds consumption rates under normal operating conditions
  • CoolSkin™ technology leaves the conveyor dryer skin cool to the touch
  • Fast curing rates and high product throughput maximize conveyor dryer capacity and minimize per-unit cost
  • Fuzzy-Logic controller ensures consistency by keeping dryer chamber heat within 1° of target temperature at the thermocouple
  • Guardian II is the most energy-efficient dryer in its class
  • Heavy-duty thermal insulation prevents heat from migrating from the conveyor dryer into the workplace
  • Pressurized vector air knives provide consistent and uniform temperatures throughout the drying chamber
  • Process temperature and set temperature are displayed and controlled digitally
HEAT CHAMBER
  • Burners are available for liquid propane (LP) or natural gas (NG)
  • Direct-fired burner is maximum-rated at 400 000 Btu
  • Double-wall construction
  • Galvanized steel interior
  • Interior air distribution system ensures uniformity and consistency of temperature
  • Modular gas train simplifies maintenance
PRODUCTIVITY
  • Guardian II has the highest production capacity in its class
WARRANTY, SERVICE AND SUPPORT
  • 24-hour hotline is staffed 365 days a year
  • Access to M&R’s Training Center
  • One-year limited warranty
AIR HANDLING
  • AC variable-speed circulation blower
CONVEYOR SYSTEM
  • Available with conveyor speeds faster than the standard rates listed
  • Conveyor extension sections are available in 30 cm (12") increments
  • Split-belt model with independent drives features reversible direction and variable speed
COOLING
  • Ambient air and refrigerated air cooling units
HEAT CHAMBER
  • 61 cm (24”) infrared pre-heat module speeds throughput
  • Additional 61 cm (24") conveyor dryer sections are available
UV CURING MODULES
  • Switchback™
  • Vitran II™

Model Specification

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Belt Width 122 cm (48")
Burner Input Maximum 400 000 Btu
Burner Width 217 cm (85.5”)
Electrical Requirements 208/230V, 3 ph, 20/18 A, 50/60 Hz, 8 kW
50 Hz, 8 kW
Electrical Requirements for Optional 61 cm (24”) Radiant Section
Exhaust Blower System 25 cm (10"): 50 970 l/min (1800 cfm) @ 6 mm (1/4")
Expansion Heat Modules 61 cm (24")
Gas Input Size 2.54 cm (1")
Heat Chamber Length 183 cm (72”)
Heat Chamber Width 160 cm (63")
Infeed/Outfeed Length (Standard) 122 cm (48”)
LP/Natural Gas Input Pressure .93 mm Hg (5" w.c.)
Overall Length 427 cm (14’) or more
Shipping Weight 1588 kg (3500 lb)

Customer Reviews


avatar
Saturday, Aug 27, 2005
Tim Stough, Printing MangerConductive TechnologiesYork PA, USA
As manufacturers/printers of a very diverse product line, membrane switches, overlays, conductive circuits, pressure sensitive labels and medical sensors, we were in need of a curing line that would be as versatile as our product line. This unit would need to be capable of a wide range of temperatures, be highly reliable, maintain the temperature setting within a tolerance of +/- 5 degrees F, have enough airflow to remove all solvents for a thorough cure and, of course, all of this at a reasonable cost. After very thorough research the Guardian from M&R was chosen.

After several years of experience with these dryers we have found them to exceed our expectations. Great equipment at a fair price, with four Guardians currently in house and one on the way, I do believe we are convinced of the Guardian’s capabilities.

Exceptional products and outstanding support

We remain the worlds largest manufacturer of screen printing equipment because weve held to the standards M&R was founded on: Innovative Design, Quality Products, and Unmatched Customer Support. With sales associates, distributors, and technicians in over 40 countries on six continents, we have the largest network of sales and support in the industry. And our technical support is available 24 hours a day, every day of the year. Wherever you are, whatever you need, well be there for you.