Retrotec DucTester with DM-2 Manual de usuario descargar pdf (Pagina 8)

Tubing Accessory Kit

35 ft (10 m) of blue, red, yellow and green 1/4 inch

(12mm) outside diameter tubing. Static Pressure

Probe, 4 inch (100 mm) x 1/8 inch (6 mm) outside

diameter metal probe, 2 T and 2 male-to-male con-

nectors. Red L for duct leakage to outdoors test.

Part #: TU119

Flow Hood

24 x 24 inches

(61 x 61 cm)

Part #: PP105

Page 8 of 8

Optional accessories

12.5ft (3.8m)

Flex Duct for

DucTester

Part #: DU161

Flange

to connect

Flex Duct to

Part #: DU157

Verication

Plate

Part #: DU159

Deluxe Cordura Toolbag with

Shoulder Strap

Part #: TL118

Grill Mask 12in x 216ft,

12in perfs,

Hi-stick White,

Single Roll

Part #: GR116

Part #: GR117 (for case of 3)

Umbilical for

DucTester

fans, 7ft (2 m)

Part #: DM240

Optional DU159 Verication

Plate shown.

□ Tape the optional ow

Verication Plate to the

Flange and attach the

red tube.

□ Attach the Flex Duct to the

exhaust side of the fan

to pressurize the Flex Duct.

□ Stretch the Flex Duct to

it’s full length.

□ Set the DM-2 to measure

“Flow” in “CFM @25 Pa”.

□ Adjust the speed until

“PrA” reads close to 25 Pa.

□ Read the Verication

Plate to determine the

acceptable range for ow.

Typically, 100 to 110 CFM

is a pass.

Check gauge operation and check for blocked, leaking or

pinched tubes weekly, and anytime results are in question.

To perform the gauge check, you will need the gauge

and Umbilical.

□ Press [Exit] [Time Average] until “4s” appears.

□ Press [Mode] repeatedly to display “PrB”.

□ Connect the yellow tube between the red and

yellow ports.

□ Repeat between different ports with each of the

tubes you use for testing.

Field check gauge weekly

If readings on “PrA” and “PrB” are within 2% and

don’t drop rapidly, the tube is not blocked or

leaking and the gauge is correct.

Checking your gauge

and tubes regularly will

eliminate a common

source of error in

readings.

Mid-Range Ring

& Low-Range

Ring

(Mid) Part #: DU154

(Low) Part #: DU155

Check the DucTester system monthly with a

known setup―if flow is outside the acceptable

range then system needs full calibration.

Field check system monthly

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Retrotec DucTester with DM-2 Manual de usuario Pagina 8

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