GSi PNEG-119, Инструкция по установке и эксплуатации

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22 PNEG-119 Inline Centrifugal Fan
8. User Servicing Instructions and Troubleshooting
Important Information Regarding Fuse Replacement
This product employs overload protection (fuse). A blown fuse indicates an overload or short circuit
situation. If the fuse blows, disconnect all power to the product. Replace the fuse as per the user servicing
instructions (follow product marking for proper fuse rating) and check the product. If the replacement fuse
blows, a short circuit may be present and the user should discontinue use of the product until customer
service can be contacted for further assistance.
Fan Wheel Removal and Installation
The fan wheel is secured to the motor shaft by the use of a taper-lock bushing, motor shaft key and
cap screws. The size, quantity and torque of cap screws required will depend on the model of the fan.
Removing the Fan Wheel Assembly
1. Lock out and tagout the main power to make sure the dryer cannot be started during servicing.
2. Remove the inlet cone and grill guard.
3. If there is a safety washer present, remove the bolt, lock washer and safety washer.
4. Remove the bolts from the unthreaded holes of the bushing. Do not use these bolts for
bushing removal.
5. Using an allen wrench, undo the set screw (if present) and remove the key from the keyway.
6. Install grade 5 or stronger bolts into the threaded holes in the bushing and gradually apply torque to
each bolt to loosen the bushing.
7. Remove the bushing and fan wheel assembly.
Always disconnect and lock out power before working on or around fan.
Although the taper-lock method of retaining the wheel onto the motor shaft is very
simple and obvious, it is essential that the following points be read carefully and
fully understood, as improper installation can result in serious or fatal injury
caused by a loose, fast flying wheel.
THREADED BUSHING HOLES: The threaded holes within the bushing are provided
for disassembly purposes only. Do not attempt to use these holes for re-assembly,
as they will not allow the parts to become locked onto the shaft, thereby causing
an extremely hazardous operating condition.
CLEARANCE HOLES: When re-assembling parts, the cap screws must be installed
through the UNTAPPED CLEARANCE HOLES to cause the wheel to be pulled
forward onto the tapered bushing, thus locking the parts securely onto the motor
shaft. Refer to
Page 25 (under installation section) for assembly details.