Hoshizaki HFE-140B Series, Service Manual

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Power Supply Board
Screw M4 x 8
Top View of Relay Box
Board Support
2. RELAY BOX
[a] POWER SUPPLY BOARD
1) Unplug the unit.
2) Disconnect the connectors.
3) Loosen and remove the two Board Supports at the back.
4) Loosen the three screws from outside the Relay Box,
and remove the Power Supply Board. Do not remove
the screws from inside the Relay Box, or the parts may
fall off the Power Supply Board.
5) To replace the removed parts, reverse the above
procedure.
Note: 1. The Power Supply Board is connected to a commercial power supply. Be sure
to disconnect the power supply before servicing.
2. Some parts may have become hot just after operation. Handle with care.
3. REFRIGERATION CIRCUIT
[a] COMPRESSOR
1) Unplug the unit.
2) Remove the Front Panel.
3) Remove the Top Panel.
4) Remove the Protector Cover enclosing the electrical parts. Remove the Overload
Relay, Starting Relay, and other parts.
5) Recover the refrigerant from the low side Access Valve.
6) Disconnect the discharge and suction pipes by using brazing equipment.
7) Remove the hexagon bolts securing the Compressor.
8) To replace the removed parts, reverse the above procedure.