EF3801/4001 V1 Feed System
Service or Repair Instruction
| OVERVIEW |
| The EasyFire feed system consists of four main components, feed |
| m otor and mounting plate, feed auger shaft, feed disk, and feed disk |
| bushing (Figure 1). These com ponents are designed to provide |
| thousands of hours of service and rarely require service or |
| replacem ent. Operation of feed system is controlled by the main |
| control board based on the stoves tem perature and heat setting. Unlike |
| other pellet stoves, the system operates by increasing and decreasing |
| the speed of the auger and disk. Pellets are pushed forward toward the |
| disk and as the disk rotates clockwise (from front of stove) allows the |
| pellets to be feed into the shoot. Three feed disk sizes are available |
| with the standard = 1, medium = 2, and large = 3. #3 feed disks are for |
| large or long pellets only. If overfeeding or |
| and adjusting the feed trim will not compensate, changing the feed disk |
Figure 1 | is advised. |
| Removing and Replacing the Feed Assembly: The feed assem bly |
| and gear motor is accessed by rem oving the rear inspection panel for |
| both the heater and insert. Remove the four or six #8 screws |
| attaching the inspection cover and rem ove cover. Rem ove all pellets |
| from hopper and feed disk area inside unit. Locate feed m otor and |
| unplug wire harness connections (note location of red banded wire on |
| m otor to assure proper rotation of motor). Rem ove wing nuts (or #10 |
| nuts on som e units) attaching feed motor bracket to rear of feed shoot. |
| Gently rem ove feed assembly by pulling toward the rear of unit. The |
| feed shaft maybe rem oved by loosening the allen screws holding the |
| shaft coupler. Rem ove the two #8 phillips screws holding the feed |
| m otor bracket to the gear motor. Reverse process to install feed |
| m otor assem bly. |
Bushing replacement: Disk bushing may be replaced by rem oving 2- #8 retaining screws and carefully prying with a large flat blade screw driver from inside hopper (Figure 2). To
with thinner or alcohol and apply a sm all am ount of red
Shaft or Disk Replacement: The feed disk and shaft depth are set at the factory to allow the feed disk to ride fully in the feed disk bushing. W hen replacing either component, make sure the installed disk ride toward the rear of the disk (Figure 3) and does not extend to far forward. If the disk is set to far forward it may jam b causing the shaft to bend or break. Assem ble the new components onto the m otor drive loosely then install into stove. Carefully position disk and m ark or tighten disk onto shaft. Rem ove disk and motor assem bly from stove and tighten with 1/8" allen wrench.
NOTE: W HEN ASSEMBLING THE SHAFT AND COUPLER,
ALW AYS USE A SMALL AMOUNT OF LOCK TIGHT (RED) ON
ALLEN SET SCREW S. AFTER THE ASSEMBLY HAS BEEN
INSTALLED THE FEED DISK MUST RIDE IN THE CENTER OF
THE FEED BUSHING. | Figure 3 |
5061 Brooks St. Montclair, CA 91763
www.sierraproductsinc.com
P/N EF3801 4001 Sensor replacment 4/04
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