Apparatus, Petrillo, Pumpers

Darley Top-Mount CAFS Pumper Replaces 1986 Pumper-Tanker

Issue 6 and Volume 22.

Alan M. Petrillo   Alan M. Petrillo

When the Mount Vernon (ME) Fire Department needed a new pumper to replace a 1986 pumper-tanker, it turned to W.S. Darley & Co. for another rig with a compressed-air foam system (CAFS), just like the department’s two previous Darley pumpers.

1 W.S. Darley & Co. built this CAFS pumper for the Mount Vernon (ME) Fire Department on a Freightliner M2 106 two-door chassis and cab with a PolyBilt copolymer body. (Photo courtesy of W.S. Darley & Co.)
1 W.S. Darley & Co. built this CAFS pumper for the Mount Vernon (ME) Fire Department on a Freightliner M2 106 two-door chassis and cab with a PolyBilt copolymer body. (Photo courtesy of W.S. Darley & Co.)

“This is our third Darley pumper and our fourth Darley-built truck,” says Joe Lemieux, Mount Vernon’s captain. “We’ve been running CAFS for 18 years, and all of our pumpers have it, so we wanted our new pumper to have CAFS as well. Using CAFS on structure fires gives us the ability to get a quick knockdown so we can get to the source of the fire, and we also use less water and cause less water damage to the home.”

Lemieux points out that because of fire station physical restrictions, the department’s new pumper had to be built within certain parameters for its height, length, and wheelbase. The resulting 2016 Darley CAFS pumper came in at 30 feet 8 inches long overall, 9 feet 6 inches high overall, and has a 227-inch wheelbase. The rig is built on a Freightliner M2 106 two-door chassis with a PolyBilt copolymer body on a 16,000-pound front axle and a 24,020-pound rear axle. It’s powered by a Cummins ISL9 diesel engine and an Allison 3000 EVS automatic transmission.

2 The Mount Vernon Darley pumper has a Darley/Champion LDMBC 1,250- gpm single-stage pump, a 1,000-gallon PolyBilt copolymer water tank with a 25-gallon integral foam tank, a Darley AutoCAFS II, a FoamPro 2001 foam injection system, and a Tamrotor 220-cfm compressor. [Photo courtesy of the Mount Vernon (ME) Fire Department.]
2 The Mount Vernon Darley pumper has a Darley/Champion LDMBC 1,250- gpm single-stage pump, a 1,000-gallon PolyBilt copolymer water tank with a 25-gallon integral foam tank, a Darley AutoCAFS II, a FoamPro 2001 foam injection system, and a Tamrotor 220-cfm compressor. [Photo courtesy of the Mount Vernon (ME) Fire Department.]

Suppression Abilities

Troy Carothers, Darley’s AutoCAFS manager, who sold the pumper to Mount Vernon, says Darley previously had built a CAFS pumper for Mount Vernon on a GMC T8500 chassis in 1998 and a little over 10 years later built the department a quick-attack CAFS pumper on a GMC K5500 chassis. “The pumper-tanker they were replacing was a top-mount setup,” Carothers notes, “so they wanted another top mount for their new rig. They like the visibility the pump operator gets by being up and above the scene, especially when they are deploying and using a portable water tank.”

The new pumper Darley built for Mount Vernon has a Darley/Champion LDMBC 1,250-gallon-per-minute (gpm) single-stage pump, a PolyBilt body with integral 1,000-gallon copolymer water tank, and a 25-gallon integral foam tank. It has a Darley AutoCAFS II system plumbed to three compressed-air-foam discharges, a FoamPro 2001 foam injection system, and a 220-cubic-feet-per-minute (cfm) Tamrotor compressor.

3 The pumper features a Darley “squirrel tail” preconnected 17-foot suction hose with its own gate valve and a low-level Task Force Tips strainer connected to the driver’s side six-inch suction. (Photo courtesy of W.S. Darley & Co.)
3 The pumper features a Darley “squirrel tail” preconnected 17-foot suction hose with its own gate valve and a low-level Task Force Tips strainer connected to the driver’s side six-inch suction. (Photo courtesy of W.S. Darley & Co.)

Carothers says that the top-mount pump control panel is Darley’s Wrap-Around model that is surfaced with a black vinyl-coated aluminum material. “The left side of the truck has a rear slide-in compartment for three ground ladders and four pike poles, and all six compartments are covered by ROM roll-up doors,” he points out. “The right side of the truck features a Husky 2,100-gallon portable water tank in a Zico rack, with a pair of 10-foot-long suction hoses on top.”

The pumper’s rear compartment has a Newton 10-inch square dump valve with an electric extension chute behind an electrically controlled ROM roll-up door. “Using the in-cab backup camera, which has GPS, the driver can back up to the folding tank, open the rear compartment door, extend the dump chute, and open the dump valve, all without leaving the cab,” Carothers says. “And, the driver’s side of the pumper features a Darley ‘squirrel tail’ preconnected 17-foot suction hose with its own gate valve and low-level Task Force Tips strainer connected to the driver’s side six-inch suction.”

4 The right side of the Darley CAFS pumper for Mount Vernon has a Husky 2,100-gallon portable water tank in a drop-down Zico rack that holds two 10-foot hard suction lengths on its top. [Photo courtesy of the Mount Vernon (ME) Fire Department.]
4 The right side of the Darley CAFS pumper for Mount Vernon has a Husky 2,100-gallon portable water tank in a drop-down Zico rack that holds two 10-foot hard suction lengths on its top. [Photo courtesy of the Mount Vernon (ME) Fire Department.]

Lemieux points out that Mount Vernon’s fire district encompasses a lot of winding, rolling country roads dotted with campgrounds, farms, and lake homes. “Our new pumper had to be maneuverable and have CAFS on it along with a 1,000-gallon water tank that we could dump quickly and then move off to refill the tank,” he says. “We have to truck our water to a fire scene from dry hydrants or ponds, so the rear dump valve is an important feature that we have on this new Darley pumper and also on our 1998 Darley pumper.”

Carothers adds that when using the backup camera, it can trigger two FRC Spectra scene lights to illuminate the area of a portable water tank. “The driver only has to get within a couple inches of the tank, put the pumper in park, then activate three switches: the ROM roll-up door, the dump chute extension, and the dump valve,” he says. “The driver is able to see the entire operation through the backup camera.”

Other Feature

5 A notable feature on the pumper is a Newton 10-inch square dump valve inside the rear compartment behind an electrically controlled ROM roll-up door. The dump valve chute can be extended by remote control from the truck’s cab and the dump valve opened to dump the truck’s 1,000 gallons into a portable tank. [Photo courtesy of the Mount Vernon (ME) Fire Department.]
5 A notable feature on the pumper is a Newton 10-inch square dump valve inside the rear compartment behind an electrically controlled ROM roll-up door. The dump valve chute can be extended by remote control from the truck’s cab and the dump valve opened to dump the truck’s 1,000 gallons into a portable tank. [Photo courtesy of the Mount Vernon (ME) Fire Department.]

Lemieux says the department went with all LED lighting on the Darley pumper, which meant there was no need for an onboard generator. “We also have a 500-gpm Darley portable pump in the left rear compartment that goes with a length of four-inch flexible hard suction,” he says. “We had Darley put a 12-volt connection in the compartment so we could keep the portable pump’s battery charged at all times.”

Other features on the pumper, Carothers points out, are a folding two-inch-thick diamond plate hosebed cover, a 2½-inch hosebed for a CAFS preconnect with a Task Force Tips Blitzfire 300-gpm monitor at the end, a 2½-inch Akron direct tank fill valve in the back compartment near the Newton dump valve, and full-depth compartments on the driver’s side with slide-out tool boards for hand tools and self-contained breathing apparatus.

6 The CAFS pumper has a 24-foot extension and a 16-foot roof ladder in a compartment on the right rear of the vehicle. (Photos 6-8 courtesy of W.S. Darley & Co.)
6 The CAFS pumper has a 24-foot extension and a 16-foot roof ladder in a compartment on the right rear of the vehicle. (Photos 6-8 courtesy of W.S. Darley & Co.)

Lemieux points out that the department is pleased with the new Darley CAFS pumper. “We received it in September of last year and it’s been to a few structure fires and also some chimney fires this winter,” he says. “The pumper runs very well; it has a very quiet operation and is an operator friendly truck.”

ALAN M. PETRILLO is a Tucson, Arizona-based journalist, the author of three novels and five nonfiction books, and a member of the Fire Apparatus & Emergency Equipment editorial advisory board. He served 22 years with the Verdoy (NY) Fire Department, including in the position of chief.

7 The hosebed on the Darley pumper for Mount Vernon is covered by two folding two-inch-thick diamond plate covers
7 The hosebed on the Darley pumper for Mount Vernon is covered by two folding two-inch-thick diamond plate covers.

department

Mount Vernon (ME) Fire Department

Strength: 25 volunteer firefighters, one station.

Service area: Provides fire protection and rescue services to a rural residential fire district with some commercial buildings in Mount Vernon Village. Coverage area is approximately 43 square miles; population is approximately 1,640. One-third of the town’s housing units are clustered around the lake frontages on Parker Pond, Long Pond, Echo Lake, Flying Pond, and several smaller ponds

Other apparatus: 2009 Darley GMC K5500, Darley 1,000-gpm pump, 300-gallon water tank, Darley AutoCAFS; 1998 Darley GMC 8500, Darley 1,000-gpm pump, 1,000-gallon water tank, Darley AutoCAFS; 2012 Darley Ford F-450 medical rescue truck; all-terrain vehicle forestry unit; rescue boat.

8 The top-mount wrap-around pump panel on the Mount Vernon pumper is covered with a black-vinyl coated material.
8 The top-mount wrap-around pump panel on the Mount Vernon pumper is covered with a black-vinyl coated material.

specs

Darley CAFS Pumper

  • Freightliner M2 106 two-door chassis top-mount CAFS pumper
  • PolyBilt copolymer body
  • 16,000-pound front axle
  • 24,020-pound rear axle
  • 30-foot 8-inch overall length
  • 9-foot 6-inch overall height
  • 227-inch wheelbase
  • Cummins 300-hp ISL 9 diesel engine
  • Allison 3000 EVS automatic transmission
  • Darley/Champion LDMBC 1,250-gpm single-stage pump
  • 1,000-gallon copolymer water tank integral with body
  • 25-gallon integral foam tank
  • Darley AutoCAFS II plumbed to three compressed air foam discharges
  • FoamPro 2001 foam injection system
  • 220-cfm Tamrotor compressor
  • ROM roll-up doors
  • Darley “squirrel tail” preconnected six-inch, 17-foot-long suction hose with gate valve and Task Force Tips low-level strainer
  • Newton 10-inch dump valve with electric extension at rear
  • Rear slide-in compartment for three ladders and four pike poles
  • Husky 2,100-gallon portable water tank in a Zico rack with two 10-foot-long hard suction hoses
  • Four FRC Spectra 12-volt LED telescoping lights
  • Federal Q2B mechanical siren
  • Whelen electronic siren
  • Backup camera with GPS

Price without equipment: $448,500

9 The Mount Vernon CAFS pumper carries four FRC Spectra 12-volt LED telescoping scene lights, with two of them shown here at the rear of the pumper. [Photo courtesy of the Mount Vernon (ME) Fire Department.]
9 The Mount Vernon CAFS pumper carries four FRC Spectra 12-volt LED telescoping scene lights, with two of them shown here at the rear of the pumper. [Photo courtesy of the Mount Vernon (ME) Fire Department.]