1. Safety
Safety Instructions
1.
Before returning the chiller to the customer, always make a safety check of the entire chiller, including, but not limited to, the
following items:
a) Be sure that no built-in protective devices are defective and/or have been defeated during servicing. (1) Protective shields
are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields,
including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet,
be sure to put back in place all protective devices, including, but not limited to, insulating materials, barriers, covers/shields,
and isolation resistor/capacitor networks. Do not operate this chiller or permit it to be operated without all protective devices
correctly installed and functioning. Service people who defeat safety features or fail to perform safety checks may be liable
for any resulting damage.
b) Be sure that there are no cabinet openings through which an adult or child might be able to insert their
fi
ngers and contact a
hazardous voltage. Such openings include, but are not limited to, (1) excessively wide cabinet ventilation slots, and (2) an
improperly
fi
tted and/or incorrectly secured cover panels.
c) Leakage Current Hot Check. With the chiller completely reassembled, plug the AC line cord directly into a 220 V AC outlet
(Do not use an isolation transformer during this test). Use a leakage current tester or a metering system that is designed
to comply with the new IEC, ANSI and UL standards. With the chiller AC switch
fi
rst in the on position and then in the
off position, measure from a known earth ground (metal waterpipe, conduit, etc.) to all exposed metal parts of the chiller
(antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.). especially any exposed metal
parts that offer an electrical return path to the chassis. Any current measured must not exceed 3,5 mA. Reverse the chiller
power cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN
INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT
TO THE CUSTOMER OR BEFORE CONNECTING ACCESSORIES.
Leakage Current Tester
Reading should
not be above
3,5 mA
Test all exposed metal surfaces
Earth
Ground
+
-
2-Wired cord
Also test with plug reversed
(Using AC Adapter plug as required)
AC Leakage Test
Device Under Test
Image 1-1
2.
Read and comply with all caution and safety-related notes on or inside the chiller.
3.
Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this apparatus. Design alterations and
additions, including, but not limited to, circuit modi
fi
cations and the addition of items such as auxiliary audio and/or video output
connections, might alter the safety characteristics of this apparatus and create a hazard to the user. Any design alterations
or additions may void the manufacturer’s warranty and may make you, the servicer responsible for personal injury or property
damage resulting therefrom.
4.
Observe original lead dress. Always inspect in all areas for pinched, out-of-face, or frayed wiring. Do not change spacing
between components, and between components and the printed-circuit board. Check AC power cord for damage. Take extra
care to assure correct lead dress in the following areas:
a) near sharp edges
b) near thermally hot parts - be sure that leads and components do not touch thermally hot parts
c) the AC supply
d) high voltage
5.
Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with compo-
nents, parts, or wiring that meet original speci
fi
cations. Additionally, determine the cause of overheating and/or damage and, if
necessary, take corrective action to remove any potential safety hazard.
6.
PRODUCT SAFETY NOTICE - Many electrical and mechanical parts have special safety-related characteristics some of which
are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with
components rated for higher voltage, wattage, etc. Use of a substitute replacement that does not have the same safety charac-
teristics as the recommended replacement part in BARCO service data parts list might create shock,
fi
re, and/or other hazards.
Product Safety is under review continuously and new instructions are issued whenever appropriate. For the latest information,
always consult the appropriate current BARCO service literature.
4
R5906015 ULC-30A 01/02/2018
Summary of Contents for ULC-30A
Page 1: ...ULC 30A Service manual R5906015 01 01 02 2018...
Page 4: ......
Page 6: ...Table of contents Index 97 2 R5906015 ULC 30A 01 02 2018...
Page 10: ...1 Safety 6 R5906015 ULC 30A 01 02 2018...
Page 24: ...5 Covers 20 R5906015 ULC 30A 01 02 2018...
Page 28: ...6 Fan unit 24 R5906015 ULC 30A 01 02 2018...
Page 40: ...7 Coolant procedures 36 R5906015 ULC 30A 01 02 2018...
Page 70: ...10 Refrigeration unit 66 R5906015 ULC 30A 01 02 2018...
Page 92: ...11 Electronics Unit 88 R5906015 ULC 30A 01 02 2018...
