Greenheck Fan 41, 81

SERIES 41 AND 81 MODUTROL IV™ MOTORS

3 63-2187—3

Fig. 1. Series 41 and Series 81 Modutrol IV Motor mounting dimensions in in. (mm).

Dead Weight Load On Shaft (maximum):

Power or Auxiliary End: 200 lb. [90.8 kg].

Combined Load: 300 lb. [136 kg]. (Dual-stroke motors only.)

Maximum Damper Rating [B Dimension]:

25 lb.-in. Models: 68 in.

60 lb.-in. Models: 34 in.

NOTE: The B dimension is the length of the damper side

perpendicular to the drive shaft.

Ambient Temperature Ratings:

Maximum: 150°F (66°C).

Minimum: -40°F (-40°C).

Torque and Timing: See Table 4.

Approvals:

Underwriters Laboratories Inc. Listed: File No. E4436, Guide

No. XAPX.

Canadian Standards Association Certified: General listed File

No. LR1620, Guide No. 400-E.

Accessories:

198162AA Internal Transformer; 120/208/240 Vac 50/60 Hz

primary, 24 Vac secondary.

198162EA Internal Transformer; 120 Vac 50/60 Hz primary,

24 Vac secondary.

198162GA Internal Transformer; 220 Vac 50/60 Hz primary,

24 Vac secondary.

198162JA Internal Transformer; 24 Vac 50/60 Hz primary,

24 Vac secondary (for electrical isolation).

220736 Internal Auxiliary Switch Kit can be field-installed

on TRADELINE models. One- (220736A) and Two-

(220736B) switch kits available.

220738A Adapter Bracket raises motor shaft height by 19 mm

to match that of previous Modutrol® Motor models.

220741A Screw Terminal Adapter converts the standard

quick-connect terminals to screw terminals.

221455A Infinitely Adjustable Crank Arm approximately

0.75 in. shorter than the 4074ELY Crank Arm, can rotate

through downward position and clear motor base without

requiring adapter bracket.

4074ERU Weatherproofing Kit provides NEMA 3 rating for

Modutrol IV Motors mounted in position other than upright.

M17711

4-7/8

(124)

5-1/2

(140)

13/16

(20)

4-1/16 (103)

1/4

(7)

1-1/2 (37)

4-1/16 (103)

WIRING

BOX

BASE

MOTOR

AUXILARY

END

POWER

END

ADAPTER

BRACKET

2-9/16

(66)

5-3/8

(137)

6-7/16

(164)

9/16 (15)

3/4

(19)

TOP VIEW OF BRACKET TOP VIEW

4-5/8

(116)

4-1/4

(107)

2-5/16

(58)

11/16

(17)

4-7/8 (124)

5-9/16 (141)

1/4 (7)

5-13/16

(148)

POWER END

SOME MODELS DO NOT HAVE AN AUXILIARY

SHAFT. ALL OTHER DIMENSIONS ARE THE SAME.

FOR HIGH TORQUE (60 LB-IN.) SPRING RETURN

MODELS 8-3/4 (222); FOR LOW TORQUE (25 LB-IN.)

SPRING RETURN MODELS 8-1/4 (210).

FOR HIGH TORQUE (60 LB-IN.) SPRING

RETURN MODELS (SHOWN).

FOR LOW TORQUE (25 LB-IN.) SPRING

RETURN MODELS.