Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagram
- A. Construction
- B. Icemaking Unit
- C. Water/Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- A. Sequence of Operation Flow Chart
- 1. Icemaking and Drain Cycle
- 2. Shutdown
- B. Service Diagnosis
- 1. Ice Production Check
- 2. Diagnostic Procedure
- C. Control Board Check
- D. Bin Control Check
- E. Float Switch Check and Cleaning
- F. Diagnostic Tables
- III. Controls and Adjustments
- A. Control Board
- 1. Control Board Layout Shown:
- 2. LED Lights and Audible Alarm Safeties
- 3. Ice Purge Cycle Bypass
- B. Controls and Adjustments
- 1. Default Dip Switch Settings
- 2. Infrared Sensor Shutdown Delay (S1 dip switch 1, 2, 3)
- 3. Drain Frequency Control (S1 dip switch 4)
- 4. Continuous Dispensing Timer (S1 dip switch 5 & 6)
- 5. Bin Control Selector (S1 dip switch 7)
- 6a. Mechanical Shutdown Delay (S1 dip switch 8) Auxiliary Code E-0:
- 6b. Agitation and Ice Purge Timer (S1 dip switch 8) Auxiliary Code F-0 and Later:
- 7. Mechanical Shutdown Delay (S1 dip switch 9) Auxiliary Code F-0 and Later
- 8a. Factory Use (S1 Dip Switch 9 & 10) Auxiliary Code E-0
- 8b. Factory Use (S1 Dip Switch 10) Auxiliary Code F-0 and Later
- C. Power Switch and Control Switch
- IV. Refrigeration Circuit and Component Service Information
- A. Refrigeration Circuit Service Information
- B. Component Service Information
- V. Maintenance
- VI. Disposal
- VII. Technical Information
- A. Specification & Performance Data Sheets
- 1. F-330BAJ
- 2. F-330BAJ-C
- B. Wiring Diagram
45
6. Removal and Replacement of Mechanical Seal and Lower Housing
6a. Mechanical Seal
1) Drain the water from the evaporator.
a) Remove the front panel, then move the power switch to the "OFF" position.
b) Move the control switch to the "DRAIN" position.
c) Move the power switch to the "ON" position and allow the water to drain from the
evaporator.
d) Move the power switch to the "OFF" position, then turn off the power supply.
2) Remove the top and side panels.
3) Remove the strap connecting the spout to the chute assembly, then remove the spout.
4) Remove the extruding head seal bolts. Using the cutter, lift out the auger assembly.
5) The mechanical seal consists of two parts. One moves along with the auger, and the
other is xed on the lower housing. If the contact surfaces of these two parts are worn,
cracked, or scratched, the mechanical seal may cause water leaks and should be
replaced.
6) Remove the socket head cap screws and split lock washers securing the evaporator to
the lower bearing housing.
7) Raise the evaporator up to access the lower housing.
8) Remove the O-ring and mechanical seal from the housing. If only replacing the
mechanical seal, proceed to step 11.
NOTICE
To help prevent water leaks, be careful not to damage the surfaces of the O-ring or
mechanical seal.
6b. Lower Housing
9) Remove the hex bolts w/washers securing the lower housing to the gear motor and
remove the lower housing from the gear motor. If inspection of the upper bearing inside
the extruding head (see "IV.B.1. Upper Bearing Wear Check") indicates that it is out of
tolerance, replace both it and the bearing inside the lower housing.
Note: Replacing the bearing requires a bearing press adaptor. If one is not available,
replace the whole extruding head and lower housing.
10) Mount the lower housing on the gear motor.
11) Install the O-ring and lower part of the mechanical seal on the lower housing.
12) Make sure the lower mechanical seal is in place, then place the evaporator in position.
Secure the evaporator to the lower housing using the socket head cap screws and split
lock washers.
13) Install the auger assembly with the upper part of the mechanical seal attached.
14) Replace the removed parts in the reverse order of which they were removed.
Note: Be sure to use new seal bolts. See "Seal Bolt Removal and Installation
Instructions" earlier in this section.