Quantech QWC4, Installation Operation & Maintenance, Page: 127 / 156

QUANTECH
127
SECTION 6 - OPERATION
FORM QWC4-NM1 (221)
ISSUE DATE: 02/28/2021
6
SYSTEM SWITCHES AND SERVICE KEY
FIGURE 62 - SYSTEM SWITCHES AND SERVICE KEYS
LD19539
SYSTEM
SWITCHES KEY
SERVICE KEY
Press the

key to enter the switch selection into
memory.
If RESET (LOCKOUT) is selected and accepted, it
will not change the position of the switch (ON or OFF).
Except in emergencies, always use the
SYSTEM SWITCH to turn off the com -
pressor, which allows the compressor to
go through a controlled shutdown. Avoid
using the UNIT SWITCH to turn off the
compressor.
Service Key
The SERVICE key allows the programming of the pro-
grammable values that the user should never change.
They will be programmed at the factory or by qualified
service personnel.
SYSTEM SWITCHES ON / OFF / RESET
◄ ► = ON OR OFF OR RESET
Use the SYSTEM SWITCHES key to enable/disable
the chiller. In addition, safety lockouts can be cleared
under this key. Pressing this key returns to the first
SYSTEM SWITCHES screen. The ▼ and ▲ keys will
scroll to the next or previous item. Use the ◄ or ►
keys to scroll through the choices for each item and the

key to accept the new item setting.
If RESET (LOCKOUT) is selected, a lockout fault on
that system will be cleared, but the state of that sys-
tem's switch will remain unchanged (ON or OFF).
SYSTEM SWITCHES ON / OFF / RESET
◄ ► = ON OR OFF OR RESET
Use the ◄ or ► key to scroll through the message:
• SYSTEM OFF (default)
• SYSTEM ON
• RESET (LOCKOUT)