450 mm ø Axial fans

HQ HW HRF

All dimensions in mm

Specification Motor protection Speed control For all speed controllable models the current is given in the ‘speed controlled’ column of the table below which must beused when selecting a controller. Sound levels Casing All models (except explosionproof) have thermal contacts as standard which must be connected to a motor protection unit (see below). Both sound power and sound pressure levels are shown on each performance curve. Soundpressure levels are measured at4 meters in freefield conditions and are the calculated average between the inlet and exhaust data. Further acoustical information see page 13. Manufactured in galvanised sheet steel. Models HQ and HW have the additional protection oftwo coats of light grey paint. Impeller Electrical connection Terminals in motor cap (IP 55). HRF models are pre wired to an additional terminal box (IP 55)fitted externally on the casing.Explosion proof models may vary. Reversed operation Highly efficient, profiled 7 blade impeller, dynamically balancedand manufactured from impactresistant polymers. Suitable for -30 to + 60 °C. All models are reversible when wired to a reversing switch. Forreverse air flow direction allowfor

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drop in performance.

Information PagesTechnical description76Selection chart77 Design of systems12-16

Installation Installation in any position. Ensure that motor drainage holes face downwards. Motor Totally enclosed, reversiblemotor with a die-cast aluminium casing, protected to IP 54/IP 55. Sealed for life ball bearings with tropical protection of windings and radio suppression. For maximum air flow temperaturesee table below. Guard

Made to order designs

All models have zinc plated motor side wire guards to EN 294.

Alternative voltages, frequencies, protection classes, high temperatures, acid protection,air flow direction B etc. are available on request.For safety and correct use notethe technical information on pages 17-19.

Dimensions Dimensions are shown above. Pole-switching and explosionproof models may vary.

R.P.M. Air flowvolume(FID) Motorpower(nominal) Current fullspeedloadcontrolled Wiringdiagram Maximum air flow temp.standardspeed supplycontrolled Nominalweight(net) Fan type TransformerorPole switch HQ Ref.No. HW Ref.No. HRF Ref.No. incl.guard incl.guard min
-1 m
3 /h W AA No. +°C+°C kg Type Ref.-No. 1 Phase motor, 230 V / 1 ph. / 50 Hz, protection to IP 55 5 speed transformer 960 4130 120 0.901.00 475
1) 6040 15.5 HQW 450/6 0991 — — HRFW 450/6
1) 0208 MWS 1.5
2)4) 1947 1250 5380 330 2.102.10 475
1) 6040 15.5 HQW 450/4 0992 HWW 450/4 1010 HRFW 450/4
1) 0209 MWS 3
2)4) 1948 3 Phase motor, 400 V / 3 ph. / 50 Hz, protection to IP 55 950 4090 120 0.450.45 469 6040 15.5 HQD 450/6 0993 — — HRFD 450/6 0230 RDS 1
2)4) 1314 1335 5740 330 0.951.00 469 5040 15.5 HQD 450/4 0994 HWD 450/4 1028 HRFD 450/4 0231 RDS 2
2)4) 1315 2 speed motor, 400 V / 3 ph. / 50 Hz,Y/ - motor, protection to IP 55 Star/delta switch 1000/1335 4300/5740 300/480 0.56/0.94 520 60— 15.5 HQD 450/4/4 1467 — — HRFD 450/4/4 1468 DS 2 1351 2 speed motor, pole-switching, Dahlander windings, 400 V / 3 ph. / 50 Hz, protection to IP 55 Pole switch 480/975 2070/4200 40/120 0.25/0.45 472 60— 17.5 HQD 450/12/6 0995 — — — — PDA 12 5081 700/1390 3010/5980 60/330 0.40/1.00 472 50— 17.5 HQD 450/8/4 0996 — — HRFD 450/8/4 0403 PDA 12 5081 Explosion proof E Exe II, 400 V / 3 ph. / 50 Hz, protection to IP 54, temperature class T4 950 4090 180 0.69 470 40— 15.5 HQD 450/6 Ex 1155 — — — — not permitted 1450 6240 370 1.12 470 40— 15.5 HQD 450/4 Ex 1154 — — HRFD 450/4 Ex 0481 not permitted
1) Type HRFW:connect using wiring diagram No. SS 681
2) Includes full motor protection unit
3) Includes Pole switch
4) alternative: TSW/TSD; 5 step transformer controllers without motor protectio n

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