Despatch RQD1-42 User Manual

INSPIRED INNOVATION

u Qmax High Perfomance Reach-In Ovens

Meets your testing requirements

e Qmax Series High Performance Reach-in forced-convection oven is
specically designed to meet the frequent air changes and tight temperature
uniformity required of the ASTM 5423 Type I & Type II oven specication.
A high-volume fan circulates air through perforated, stainless steel walls
to create a constant horizontal airow across all sections of the oven. e
result is highly uniform airow to easily meet

ASTM 5423 Type I and II

specication while tested according to ASTM 5374.

e Qmax Series High Performance Reach-in oven exceeds the ASTM 5423
Type II performance requirement with a temperature variation of less than
6°C at 300°C while maintaining 100-200 air changes per hour. In addition,
the brass bar thermal lag time showed superior oven temperature recovery.
ese ovens can be used for applications such as thermal evaluation of
electrical insulating materials, testing, aging, curing, drying, sterilizing and
other thermal applications where tight temperature uniformity is required.

FEATURES AT A GLANCE

u Temperatures up to 343°C (650°F)

u Meets ASTM 5423 Type I and II

specification while tested according
to ASTM 5374

u Tight temperature uniformity even with

increased air changes

u Horizontal airflow for uniform thermal

performance

u Protocol 3

real-time clock makes oven operation
simple and flexible

u Multiple temperature operations are

controlled by up to eight programs,
with eight ramp and soak segments in
each program

u 304 Stainless steel interior

u Sliding shelf design for easy load

and unload

TM

microprocessor control with

u Access port in rear of oven for test

connections

u 5-year heater warranty

u End of cycle and high-limit indicators

u UL and C-UL listed open industrial

control panel

Minneapolis • shanghai • Berlin • singapore • hsinchu • tokyo • seoul

RQD 1-42 Bench

PHYSICAL SPECIFICATIONS

Chamber size (width x depth x height) 20 x 18 x 20 in.

Capacity in cubic feet (liters) 4.2 (119)

Overall size (width x depth x height) 47.2 x 31.5 x 39.8 in.

Electrical: single phase,
50/60 Hz

Number of shelves provided

Maximum number of shelves 8 on 2 in (5.1 cm) centers

Exhaust outlet diameter 2.5 in. (6.4 cm)

Insulation Thickness 4 in (10.2 cm)

Approximate net weight 350 lbs (159 kg)

Approximate shipping weight 480 lbs (218 kg)

220-240V

208V

FUNCTIONAL SPECIFICATIONS

Time to temp with no load (40˚C to 177˚C) 14 minutes

Time to temp with no load (40˚C to 260˚C) 23 minutes

Time to temp with no load (40˚C to 343˚C) 45 minutes

Temperature Uniformity ±1°C at 177°C

Temperature Uniformity - Type II oven Exceeds specification of

Minimum operating temp above ambient 25°C (45°F)

Control stability ±0.5°C / 5°C Δ

Repeatability ±0.5°C

Maximum load capacity 200 lbs (91 kg)

Maximum shelf capacity 30 lbs (13.6 kg)

Recirculating fan 1.5 HP

Notes: Uniformity figures are based on a nine-point test conducted in an empty oven (no
product, 2 standard weight shelves included with the oven) after stabilization period.
Uniformity can vary slightly depending on unit and operating conditions.

Minimum operating temperature and cooling times are based on a 20°C ambient
temperature measured at the fresh air inlet with the fresh air and exhaust dampers fully
open. Δ represents the change in ambient temperature.

Specifications are subject to change without notice. If the existing specifications differ
from yours, ask about our customizing capabilities.

51 x 46 x 51 cm

120 x 80 x 101 cm

30 amps
Heater: 6kW

34 amps
Heater: 6kW

2

±1.5°C at 260°C
±2.5°C at 343°C

temperature variation 6°C at 300°C
with 100 to 200 air changes per hour

800 CFM (377.6 LPS)

OPTIONS

u PC interface for remote input, monitoring and recording

(RS485/422/232)

u Extra shelves

u Door interlock switch turns off heater when door is opened

u Chart recorder

u Hi-limit over-temperature audible and visual alarm

u Hardware for stacking ovens

u Stand

u CE compliance

AIRFLOW

RQD front view cross section showing airflow pattern.

Warning: Despatch Qmax ovens are not to be used with flammable
solvents, combustible materials or enclosed containers. If your process
involves flammable solvents consult factory about modifications.

service and technical support

service parts: 1-800-473-7373
international service/main: 1-952-469-8230
service fax: [phone]

[e-mail]

gloBal headquarters

phone: 1-888-DESPATCH (1-888-337-7282)
international/main: 1-952-469-5424
fax: [phone]

[e-mail]
www.despatch.com

© 2011 Despatch Industries. All rights reserved. Despatch is a registered trademark of Despatch Industries in the U.S. and other countries. Qmax 12-11

8860 207th Street West
Minneapolis, MN 55044 USA