Nidec Control Techniques HVAC Drive H300 HMI Bypass, Installation And Commissioning Manual

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48 HMI Bypass Controller Installation and Commissioning Guide
• Ambient operating temp: +32 to +104 °F (0 to +40 ˚C)
• Storage temp: -40 to +140 ˚F (-40 to +60 ˚C)
• 95% relative humidity, non-condensing
• Input voltage: +10%, -10%; 208, 230, 460 and 575 Vac
• Protected from exposure to direct sunlight
6.1.4 Options
• Input fused disconnect
• Input circuit breaker
• Input or output reactors
• Multiple motor overloads
• Input RFI filter
6.2 Maintenance & Inspection
This section describes the basic periodic maintenance and inspection
procedures for the electronic bypass.
WARNING
CAUTION! To prevent electrical shock and damage, disconnect all power
before servicing the electronic bypass package. Then wait at least ten (10)
minutes after the power supply is disconnected and all LEDs are extinguished.
The bypass system will function longer if kept clean, cool and dry, and if all
precautions highlighted in this manual are observed. Periodically inspect
the electronic bypass package as described in the table below to prevent
accidents and to ensure high performance with high reliability.
Component Check Corrective Action
External terminals,
connectors, mounting
screws, etc. Loose screws
or connectors Secure / tighten
Heat sink Build-up of
dust and dirt Blow with dry compressed air
(4 to 6kg-cm2 pressure)
Printed Circuit Board
(PCB) Accumulation
of conductive
dust or oil Blow with dry compressed air (4 to 6kg-
cm2 pressure). If dust cannot be removed,
replace the board.
Cooling fan For abnormal
noise and
vibration Replace the cooling fan
Power components Accumulation
of dust and
dirt Blow with dry compressed air
(4 to 6kg-cm2 pressure)