![background image](http://html1.mh-extra.com/html/olympia/millennium-e/millennium-e_owners-manual_732546122.webp)
EnForcer™ SCR
Service Manual
I.B. 1561
8
memory. If AC power is lost during a charge cycle, the charge cycle will resume after a random delay when AC power is
restored. This allows the charger to return to where it left off when power is restored. NOTE: There are no trimming
potentiometers located in this charger.
Caution must be observed when handling or taking measurements on the PC board.
The control common, or
ground, is tied to the positive battery buss. This is especially important to consider when taking measurements on the
board while it is operating.
CONTROL CIRCUITRY
The control circuitry measures current via the precision shunt located in the positive lead of the charger. DC Voltage is
measured by means of a precision resistor circuit.
WARNING:
Under no circumstance should the starting current be adjusted to higher than the charger’s
ampere-hour nameplate rating times 0.16, or overheating of the charger will occur.
The control circuitry has three phases of charge cycle. When set for SEALED it has four:
1) Constant-Current control at the start-current setting( .16 times battery AH rating).
2) Constant-Voltage control at the Gassing-Voltage (80%) point setting.
3) Constant current at finish rate.
4) Finish voltage will not exceed 2.53 VPC (SEALED configuration only).
These modes of operation are determined by the recharge characteristics described in the following sections.
The control circuitry is connected to three small windings off the main transformer through connector J1. The value of
these AC voltages can be found in the troubleshooting section of this manual. These windings serve several purposes:
1. Provide the signals that enable the control circuitry to synchronize and determine the proper phase angle to gate
on each SCR.
2. Provide power to the control board. The controller will give an AC fault if any of the three phases becomes low or
distorted, or if any of the three AC fuses clear.
Each SCR is gated with a DC pulse. The red lead of the SCR is tied to control common, and the white gate lead is tied to
the gate-firing circuit on the control circuitry. The control will automatically balance SCR currents to within 10% at the
beginning of each charging cycle.
Refer to later sections of the manual for specific measurements and values that can be expected for normal charger
operation.
Summary of Contents for Millennium-E
Page 1: ...Owner s Manual ...
Page 8: ...The Ultimate Ice Resurfacer ...
Page 96: ...The Ultimate Ice Resurfacer 88 8 9 10 11 12 13 14 18 15 16 17 ...
Page 100: ...The Ultimate Ice Resurfacer 92 ...
Page 101: ...The Ultimate Ice Resurfacer 93 ...
Page 105: ......
Page 106: ......
Page 107: ......
Page 108: ......
Page 109: ......
Page 110: ......
Page 115: ...I B 1561 Rev B Model ES3 EnForcer SCR Battery Charger Service Manual ...
Page 148: ...EnForcer SCR Service Manual I B 1561 34 ES3 REPLACEMENT PARTS SCHEMATICS ...
Page 156: ...EnForcer SCR Service Manual I B 1561 42 SCHEMATIC DIAGRAM ES3 ...
Page 157: ...EnForcer SCR Service Manual I B 1561 43 ES3 ASSEMBLY DRAWING ...
Page 159: ...EnForcer SCR Service Manual I B 1561 45 INTERIOR VIEWS ...
Page 160: ...EnForcer SCR Service Manual I B 1561 46 SINGLE EXTRUSION HEAT SINK ASSEMBLY ...
Page 162: ...EnForcer SCR Service Manual I B 1561 48 THREE EXTRUSION HEAT SINK ASSEMBLY ...
Page 164: ...EnForcer SCR Service Manual I B 1561 50 SUB ASSEMBLY PANEL ASSEMBLY ...
Page 167: ...EnForcer SCR Service Manual I B 1561 53 DOOR ASSEMBLY ...
Page 168: ...EnForcer SCR Service Manual I B 1561 54 PARALLEL CABLES OPTIONAL ...
Page 169: ...EnForcer SCR Service Manual I B 1561 55 DISCONNECT SWITCH OPTIONAL ...
Page 170: ...EnForcer SCR Service Manual I B 1561 56 CABINET ASSEMBLY ...
Page 171: ...EnForcer SCR Service Manual I B 1561 57 CABINET ASSEMBLY EXPLODED VIEW ...
Page 174: ...EnForcer SCR Service Manual I B 1561 60 SCHEMATIC DIAGRAM ...
Page 175: ...EnForcer SCR Service Manual I B 1561 62 ES3 LARGE CABINET ASSEMBLY DRAWINGS ...
Page 176: ...EnForcer SCR Service Manual I B 1561 63 CHARGER INTERIOR VIEW ...
Page 177: ...EnForcer SCR Service Manual I B 1561 64 TRANSFORMER CONNECTIONS ...
Page 178: ...EnForcer SCR Service Manual I B 1561 65 HEAT SINK ASSEMBLY ...
Page 179: ...EnForcer SCR Service Manual I B 1561 66 HEAT SINK ASSEMBLY CON T ...
Page 180: ...EnForcer SCR Service Manual I B 1561 67 SUB ASSEMBLY PANELS ...
Page 181: ...EnForcer SCR Service Manual I B 1561 68 CABINET ASSEMBLY ...
Page 182: ...EnForcer SCR Service Manual I B 1561 69 CABINET ASSEMBLY CON T ...
Page 183: ......
Page 184: ......
Page 185: ......
Page 186: ......
Page 187: ......
Page 188: ......
Page 189: ......
Page 190: ......
Page 191: ......
Page 192: ......
Page 193: ......
Page 194: ......
Page 195: ......
Page 196: ......
Page 197: ......