MSA Chillgard 5000 - Electrical Power Supply Requirements

23
Installation
Chillgard 5000
US
4.6 Electrical Power Supply Requirements
WARNING!
A qualified electrician must do electrical wiring.
Wiring must comply with all applicable NEC/CEC and local electrical safety codes.
Make sure that the copper conductors used to connect to supply mains meet all NEC/CEC and local
electrical safety codes.
Never operate the device without a protective ground. Operating the device without a protective
ground can result in electrical shock. Electrical shock can cause damage to the device and injury to
personnel.
To prevent electrical shock, the circuit board cover must be in place when power is on. Electrical shock
can cause serious personal injury or death.
To prevent electrostatic discharge (ESD), connect an ESD wrist strap to the ESD connection point
inside the device enclosure before doing work inside the enclosure. ESD can cause damage to the
device.
Do not touch the electronic circuit boards.
Failure to follow these warnings can result in serious bodily injury or death.
The device uses a power supply that accepts inputs of 100–240 Vac, 50/60 Hz, 200 VA maximum.
Make sure the device is connected directly to the ac power source through a dedicated circuit breaker.
Use an approved 3-conductor wire (minimum 16 AWG), rated 300 Vac at 221°F (105°C), to complete
the ac power connection.
Use only conduit hubs and hardware that are suitable for fiberglass enclosures.
Do the following procedure to connect electrical power:
(1) Disconnect electrical power.
(2) Install a circuit breaker for the incoming power connections of the device.
a) Put the circuit breaker in a location that is near the device and easy to access.
b) Clearly mark the circuit breaker as the disconnecting unit for the device.
(3) If applicable, remove the locking mechanism.
(4) Release the two latches on the left side of the device.
(5) Open the enclosure.
(6) Attach the ESD wrist strap to the ESD connection point inside the enclosure.
(7) Use a ¼-in. hex driver to remove the 4 hex nuts on the circuit board cover.
(8) Remove the circuit board cover.
(9) Remove the ac power wiring hole plug.
(10) Install conduit hubs that are suitable for fiberglass enclosures through the ac power wiring hole
plug openings.
(11) Put the ac power wiring through the conduit.