MNL-126509
April 4, 2013 Page 5
CHAPTER 2: OPERATING INSTRUCTIONS; MAPLE SYSTEM
2.1 Description
The following instructions apply to units that use the Maple System touchscreen operator interface,
MNR-0053 with program 31L.
The Electrical Panel Assembly will provide logical control and safety shutdowns for the compressor
equipment. All necessary time delays, counters, shutdowns, sequencing and safety features are incorpo-
rated into a proprietary software program permanently saved into PLC memory using EEPROM technol-
ogy. The PLC is equipped with a 200 day in battery to maintain the PLC’s internal clock. The software
program is based on the pressure and use of the compressor. The operator uses the Operator Interface to
communicate with the PLC which is located in the electrical enclosure.
2.1.1 Emergency Stop Button
A Normally Closed switch when pulled out, when the E-Stop Button is pressed in, it disconnects the
main power source, turning off the compressor, draining the ACD system and stopping air delivery to
the consuming devices. This button is to be used in case of emergency. Normal operational stops should
be accomplished using the operator interface.
Figure 2-1 MNR-0053
Figure 2-2 PLC & Battery
200 DAY
BATTERY
PLC
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