MSA Chillgard LC Instruction Manual

Chillgard® LC

Control Module

Instruction Manual

WARNING

"!

THIS MANUAL MUST BE CAREFULLY READ BY ALL
INDIVIDUALS WHO HAVE OR WILL HA VE THE RESPONSIBILITY
FOR INSTALLING, USING, MAINTAINING OR SERVICING THIS
PRODUCT. Like any piece of complex equipment, this prod uct
will perform as designed only if installed, used and serviced in
accorda nce with t he manufact urer’s in structi ons. OTHE RWISE ,
IT COULD FAIL TO PERFORM AS DESIGNED AND PERSONS
WHO RELY ON THIS PRODUCT FOR THEIR SAFETY COULD
SUST AIN SEVERE PERSONAL INJUR Y O R DEATH.

The warranties made by Mine Safety Appliances Company with respect to this product are
voided i f t he p r odu c t is n ot i nst a lle d , us ed an d s er vi ce d in a cc o rd ance w it h th e ins t ru cti o ns
in this manual. Plea se protec t yourself and others by follow ing them. We encourage our
customers to write or call regarding this equipment prior to use or for any additional
information relative to use or repairs.

MSA North America 1-800-MSA-INST or FAX [phone]
MSA International [phone] or FAX [phone]
In Cana da 1-800-267-0672 or FAX [phone]

© Mine Safety Appliances Company 2008 - All Right s Reserved
This manual is available on the internet at www.msanet.com

Manufactured by

MSA NORTH AMERICA

PITTSBURGH, PENNSYLVANIA 15230

(L) REV 4 I MZ001-036 10036865

MSA

Permanent Instrument Warranty

1. Warranty- Seller warrants that this product
will be free from mechanical defect or faulty
workmanship for a period of two years
from date of shipment, provided it is
maintained and used in accordance with
Seller’s instructions and/or
recommendations. This warranty does not
apply to expendable or consumable parts
whose normal life expectancy is less than
one (1) year such as, but not limited to,
non-rechargeable batteries, filament units,
filter, lamps, fuses etc. The Seller shall be
released from all obligations under this
warranty in the event repairs or
modifications are made by persons other
than its own or authorized service
personnel or if the warranty claim results
from physical abuse or misuse of the
product. No agent, employee or
representative of the Seller has any
authority to bind the Seller to any
affirmation, representation or warranty
concerning the product. Seller makes no
warranty concerning components or
accessories not manufactured by the
Seller, but will pass on to the Purchaser all
warranties of manufacturers of such
components. THIS WARRANTY IS IN

LIEU OF ALL OTHER WARRANTIES,
EXPRESSED, IM PL IED O R STAT UT ORY,
AND IS STRICTLY LIMITED TO THE
TERMS HEREOF. SELLER
SPECIFICALLY DISCLAIMS ANY

WARRANTY OF MERCHANTABILITY OR
OF FITNESS FOR A PARTICULAR
PURPOSE.

2. Exclusive Remedy- It is expressly agreed
that Purchaser’s sole and exclusive remedy
for breach of the above warranty, for any
tortious conduct of Seller, or for any other
cause of action, shall be the repair and/or
replacement at Seller’s option, of any
equipment or parts thereof, which after
examination by Seller is proven to be
defective. Replacement equipment and/or
parts will be provided at no cost to
Purchaser, F.O.B. Seller’s Plant. Failure of
Seller to successfully repair any
nonconforming product shall not cause the
remedy established hereby to fail of its
essential purpose.

3. Exclusion of Consequential Damage-
Purchaser specifically understands and
agrees that under no circumstances will
seller be liable to purchaser for economic,
special, incidental or consequential
damages or losses of any kind whatsoever,
including but not limited to, loss of
anticipated profits and any other loss
caused by reason of nonoperation of the
goods. This exclusion is applicable to
claims for breach of warranty, tortious
conduct or any other cause of action
against seller.

Chillgard LC Control Module General Warnings and Cautions

General Warnings and Cautions

WARNING

"!

1. The Control Module described in this manual
must be installed, operated, and
maintained in strict accordance with the
labels, cautions, warnings, instructions, and
within the limitations stated.

anyone other than authorized MSA service
personnel, could cause the product to fail
to perform as designed, and persons who
rely on this product for their safety could
sustain serious personal injury or death.

2. The Control Module must not be installed in
outdoor areas or in locations where
explosive concentrations of combustible
gases or vapors might occur in the
atmosphere: Class 1, Group A, B, C, and D
areas as defined by the NEC. Because the
Control Module is not explosion-proof, it
must be located in non-hazardous areas.

3. Use only genuine MSA replacement parts
when performing any maintenance
procedures provided in this manual. Failure
to do so may seriously impair instrument
performance. Repair or alteration of the
Chillgard LC System, beyond the scope of
these maintenance instructions or by

Failure to comply with the above warnings can result in serious personal injury or death.

4. The Chillgard LC Control Module must be
installed, located and operated in
accordance to all applicable codes. These
codes include, but are not limited to, the
National Fire Prevention Code and National
Electric Code.

5 Protect the Chillgard LC Control Module from

vibration and heating; otherwise, improper
operation may result, which can result in
personal injury or death.

6. Do not exceed the relay contact ratings listed
in Section 1, TABLE B-1 Otherwise, relay
operation may fail, which can result in
personal injury or death.

Chillgard LC Control Module Table of Contents

Table of Contents

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Table 1-1. Chillgard LC System General Operating Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Figure 1-1. Chillgard LC Control Module Standard Version

(24 Volt AC/DC or 110/220 AC Version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Figure 1-2. Chillgard LC Control Module With Internal Transformer . . . . . . . . . . . . . . . . . . . . . 1-1

Termi n o l o g y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Connection of the Chillgard Instruments Using RS-485 Communications . . . . . . . . . . . . . . . . . . . . . . . 1-3

Multiple Sensor Modules with a Chillgard LC Control Module (Daisy Chain). . . . . . . . . . . . . . . . . . 1-3

Multiple Sensor Modules with a Chillgard LC Control Module (Two Branch). . . . . . . . . . . . . . . . . . 1-3

Figure 1-3. Connection of the Sensor and LC Instruments Using RS-485 Communications . . 1-3

Figure 1-4. Multiple Sensor Modules with a Chillgard LC Control Module (Daisy Chain) . . . . . 1-4

Figure 1-5. Multiple Sensor Modules with a Chillgard LC Control Module (Two Branch) . . . . . 1-4

Section 2

Insta llation and Set-u p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1

Recei vi n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Unpac ki n g th e S ystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

WARNIN G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

"

Initi a l In sp e c t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Location of the Control Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

" WAR N ING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Figure 2-1. Basic LC Control Module with Door Open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Wiring Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Opening the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Unit Po w e r Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

"!CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

" WAR N ING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Tabl e 2 -1 . Option S w i tc h Ta b l e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 2

Figure 2-2. Transformer Version LC Control Module with Door Open . . . . . . . . . . . . . . . . . . . 2-2

Figure 2-3. Standard Version Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Figu re 2-4. Tra n s fo r m e r V e rsion Wiring D i a g ra m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Wirin g to th e Ch i l l g a r d Se n s o r s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

" WAR N ING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Tabl e 2 -2 . C h i l l g a r d D ip Swi tch Pos i t i o n s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Figure 2-5. Chillgard LS Sensor Board Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Figure 2-6. Chillgard M-100 Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Analog Signal Output Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

CAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

"!

Table of Contents Chillgard LC Control Module

Relay Ou t p u ts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

CAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 7

"

Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Setup Date, Time, and Logging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 7

"

Initi a l Cal i b ration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

WARNIN G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

"

Section 3

Displa y Sc reens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Figure 3-1. Display Screen Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Figure 3-2. Start-up and Normal Operation Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Figure 3-3 Set-up Screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Figure 3-4 Span Calibration Screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Figu re 3-5 Zero C a li b r a ti o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 4

Figu re 3-6 Cali b ra t i o n Ch e ck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Figure 3-7 Diagnostics Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Figure 3-8 Data Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 6

Figu re 3-9 Alar m L e ve l Sc re e n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Figu re 3-10 Set u p Al a r m L a tching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Figu re 3-11 Set u p Al a r m R e l a ys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Figu re 3-12 Audi o A l a rm Scree n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Figure 3-13 Analog Outputs and Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Figu re 3-14 Set u p Ti mes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Figure 3-15 Setup Logging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 9

Figu re 3-16 Revi e w L o g. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Section 4

Mainte na nce. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Obtai n i n g R e p l a ce m e n t P a rts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

"!WARNING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Tabl e 4 -1 . R e p l a c e ment Pa rt s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

" WAR N ING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4- 1

Table 4-2. Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Section 5

Data L oggi ng. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Numbe r of Data Poi n ts Used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

User Se t u p Op ti o n s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Viewing Alarms/Events and Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Figure 5-1. Log Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Section 6

Calibr a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Diffu si o n V e rs i o n C a l ib r a t i o n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Calib r a t i o n Equ i p ment - (FIGUR E 6 - 1 ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

"!WARNING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Chillgard LC Control Module Table of Contents

Initial Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Figu re 6-1. Cal i b ra ti o n E q u i p ment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Calib r a t i o n Gu i d e l i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Calibration Check Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

"!WARNING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Figure 6-2. Applying Calibration Gas to the Chillgard LS Refrigerant Monitor. . . . . . . . . . . . . . 6-2

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Single or Four-Point Pumped Version Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Calib r a t i o n Equ i p ment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Tabl e 6 -1 . R P C a l i b ra ti o n G a s e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

" WAR N ING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Calibration Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Calib r a t i o n Gu i d e l i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Figure 6-3. Kit Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Figure 6-4. Using Zero Scrubber for Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Figure 6-5. Using Zero Gas Cylinder for Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Calibration Check Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

" WAR N ING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

" CA U TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Figure 6-6. Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

" CAU T ION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Appendix A

RS-232 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A- 1

RS-232 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Table A-1. RS-232 Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Table A-2. Information Structure (Chillgard LC Control Module) . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Tabl e A- 3 . Da t a St ru c t u r e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Tabl e A- 4 . Ala rm Stru c tu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Table A-5. Alarms and Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Appendix B

Insta llation Ou t line Dra w ing. . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Figure B-1. Installation Outline Drawing for Standard Version . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Figu re B -2 . In stall a t i o n Ou tl i n e D ra w i n g fo r T r a n sformer Versi o n. . . . . . . . . . . . . . . . . . . . . . . B-3

Chillgard LC Control Module Section 1, General Information

Section 1
General Information

Introduction

General Description

The Chillgard LC unit is a control module which
can communicate with up to eight Chillgard LS
or twelve Chillgard M100 Refrigerant Sens ors.
The Chillgard LC Control Module can be
installed remotely from the sensors, thus
enabling remote control of that Chillgard LS or
the Chillgard M100 Sensor.

The Chillgard LC comes in two major versions
based upon the power supply in the unit:

• 24 Volt AC/DC or 110/220 VAC version

• Internal Transformer version - 120 Volt input,

24 VAC output for powering Remote Sensor
Modules.

See FIGURES 1-1 and 1-2 to identify your unit.

Table 1-1. Chillgard LC System

General Operating Specifications

OPERATING SPECIF ICATIONS

100 to 240 VAC, 50-60 Hz, 25 W

VOLTAGE RATING

POWER
REQUIREMENTS

TROUBLE RELAY

ALARM 1 RELAY

ALARM 2 RELAY

ALARM 3 RELAY

24 VDC +10% -0%
24 VAC
Transforme r Version: 120 V, 60 Hz, 75 VA

.15 am ps at 120 VAC;
.10 am ps at 240 VAC

0.6 am ps at 24 VAC

0.1 am ps at 24 VDC
Minimum wire size: #18 AWG
The LC Controller can power the
Chillgar d LS and seve n Chillgard
M-100 s ensors

Normally energized, Form C contact:
240 VAC, 5 amp resistive SPDT

One relay, Form C contacts: 240
VAC, 5 amps resistive SPDT

One relay, Form C contacts: 240
VAC, 5 amps resistive SPDT

One relay, Form C contacts: 240
VAC, 5 amps resistive SPDT

+10%

Figure 1-1. Chillgard LC Control Module

Standard Version

(24 Volt AC/DC or 110/220 AC Version)

ANALOG OUTPUTS

MAXIMUM OUTPUT
SIGNAL LOAD FOR
4-20 mA OUTPUT

4 to 20 mA sourcing, 500 ohm load ,
0-6 VDC, 2 K ohm load

600 ohms (includes wiring)

Figure 1-2. Chillgard LC Control Module

With Internal Transformer

1-1

Section 1, General Information Chillgard LC Control Module

Table 1-1. Chillgard LC System

General Operating Specifications

OPERATING SPECIF ICATIONS

AUDIO ALARM
DRIVE OUTPUT

OPERATING
TEMPERATURE

STANDARD
VERSION
DIMENSIONS

STANDARD
VERSION WEIGHT

TRANSFORMER
VERSION
DIMENSIONS

TRANSFORMER
VERSION WEIGHT

TRANSPORT AND STORAGE CONDITIONS

TEMPERATURE -40
HUMIDITY 99% RH non-condensing
POLLUTION

DEGREE AND
INSTALLATION
CATEGORY

24 VDC 50-ohm load maximum
(availa ble only with non-beacon
models)

o

0 to 40

C (32 to 104oF)

7.5" high, 12.5" wide, 3.5" deep

19.05 cm high, 31.75 cm wide,

8.89 cm deep

3.5 pounds (1.59 kilograms)

14.7" high, 11.2" wid e, 5" deep
373 mm high, 284 mm wide,

127 mm deep

8.4 pounds (3.82 kilograms)

o

C to +60oC (-40oF to 140oF)

2

ZEROING- The process of placing a zero gas on

the unit during calibration.

SPAN- Full-scale or up-scale reading on

meter display.

SPANNING- The process of placing a full-scale or

span gas on the unit during calibrati on.

SPAN GAS VALUE- The gas concentration that

gives the instrument a full-scale or up-scale value.
This value is printed on the calibration gas
cylinder containing the gas.

FLOW RATE- Volume of gas drawn through the

sample line per minute.

EXHAUST GAS- Sample gas after it passes

through the sensor.

PUMP- The electric motor driven dev ice that

moves the gas sample to the refriger ant monitor.

ALARMS- The Chillgard LC System has three

alarms to alert the user at specific,
user-adjustable refrigerant gas concentrat ions.
(Level 1 = Caution, Level 2 = Warning and Level
3 = Alarm.)

RELATIVE HUMIDITY- The percent of water vapor

saturation in air at a given t emperature.

POINT NUMBER- The location or ar ea from which

a gas sample is drawn. Up to four , eight, or 12
areas, sequentially numbered from 1 to 12, can
be sampled.

Terminology

Become familiar with the following terminology.

ZERO- A zero (0) indication on the meter

display usually indicates fresh air ( no refrigerant
gas present).

FRESH AIR- Air that has no possibility of

containing refrigerant gas.

TEMPERATURE EFFECT- The gas response

displayed by the instrument (PPM) can change
+3 ppm for each degree (C) that the instrument is
operating above/below the temperature at which
the instrument was last calibrated.

1-2

Chillgard LC Control Module Section 1, General Information

Connection of the Chillgard
Instruments Using RS-485
Communications

The Chillgard LC instrument acts as t he Master
device in the network. The LC inst rument initiates
and controls all communications on the network.
The LC instrument sends out commands and
requests for data from individual sens ors. When
the instruments are powered up, the LC unit
automatically detects the number and gas type of
all instruments on the network.

In a simple system using a single sens or module
and an LC Control module, the two m odules are
connected together; both units hav e the RS-485
terminators "IN" (FIGURE 1-3). Ref er to Section
2, Installation and Setup, for s etting the address
switches and FIGURES 2-2 and 2-3 f or the
location of the termination jumpers.

NOTE:Each sensor must have a different address.

The total length of the RS-485 cable cannot
exceed 1000 feet (304 meters).
MSA recommends Belden #9841
low-capacitance cable.

Multiple Sensor Modules with a
Chillgard LC Contro l Mo du le
(Daisy Chain)

See FIGURE 1-4.
NOTE:Up to eight Chillgard LS Sensors can be

connected to a Chillgard LC Controller.
(They must be addressed as Points 1
through 8.)

• LS1 devices can be on points 1 through 8.

• LS4 devices must be on point 1 and/or 5

and will also use the next three physical
addresses.

• LS4 on point 1 takes addresses 1, 2, 3, and 4.

• LS4 on point 5 takes addresses 5, 6, 7, and 8.

• LS4 cannot be on addresses 9, 10, 11, or 12.

Multiple Sensor Modules with a
Chillgard LC Contro l Mo du le
(Two Branch)

See FIGURE 1-5. Each end of the net work must
have the terminator IN; modules in t he middle
must have terminators OUT. RS-485 connec tions
from the Chillgard LC Control unit mus t have no
more than two terminations.

Figure 1-3. Connection of the Sensor and LC

Instruments Using RS-485 Communications

1-3

Section 1, General Information Chillgard LC Control Module

Figure 1-4. Multiple Sensor Modules

with a Chillgard LC Control Module (Daisy Chain)

with a Chillgard LC Control Module (Two Branch)

1-4

Figure 1-5. Multiple Sensor Modules

Chillgard LC Control Module Section 2, Installation and Set-Up

Section 2
Installation and Set-up

Receiving
Unpacking the System

To unpack the equipment:

1. Carefully remove the Chillgard LC Control
Module from its shipping container(s) in
order to prevent damage to sensitive
electrical components. If any damage is
found, report it to the shipper immediately.

WARNING

"

Do not install or operate a damaged unit. It
may not function properly and may not alert
you to any gas conditions.

2. Search through all packing material and
containers to avoid inadvertently discarding
usable or valuable parts. Report any
shortages immediately to MSA.

Initial Inspection

With the front door open, carefully inspect
components and assemblies inside the enclosure.
If damage or shortage is evident , advise and
promptly file the proper claim with t he carrier.

Location of the Control
Module

WARNING

"

Explosion Hazard!
Unit must not be located in areas that may

contain a flammable mixture of gas and air;
failure to follow this requirement can result
in death, serious injury, or equipment or
property damage.

Figure 2-1. Basic LC Control Module with Door Open

2-1

Section 2, Installation and Set-Up Chillgard LC Control Module

Wiring Connections

Opening the Uni t

All wiring to the Chillgard LC unit is made via the
bottom entries. Open the unit to provide complete
access to all wiring connections.

Ensure that all wiring codes are followed. These
codes include, but are not limited t o, the National
Electrical Code.

CAUTION

"

Component Damage!
Monitor components must be protected from

splashing, spraying, or dripping water.
Failure to do so may cause damage to
internal components.

Unit Power W ir ing

!CAUTION

"

Instr ument Damage!
Correct powe r voltage mus t be connected to

the instrument. Failure to use cor rect voltage
may res ult in instrume nt damage.

A separate, dedicated power sourc e is
recommended for the refrigerant contr ol module to
ensure that the unit remains power ed when other
circuits are shut down for s ervicing, routine
maintenance or shift changes. Supply ear thground
is installed on lug first and all com ponent
earthgrounds are connected afterwards .

Standard Version

The control module uses a wide range power
supply which can accept AC power f rom 100 to
240 volts, 50 or 60 Hz. I f 24 Volt AC or DC is
available, power can be supplied directly to the
control board (FIGURE 2-3). The 24 V olt power
source used with this equipment must be
separated from mains by double or reinforc ed
insulation. If the 110/220 Volt power opt ion is
available, power can be supplied to terminal block
as shown in FIGURE 2-1.

Transformer Version

If the Chillgard LC unit contains t he internal
transformer, supply power as shown in
FIGURE 2-4. The resulting 24 VAC output from
the transformer can be used to power up to five
diffusion LS units or two pumped f our-point LS
units. However, voltage drop will occ ur over
extended line lengths with multiple sensors.
Ensure minimum required voltage is present at
the sensor terminals for each sensor module.

Figure 2-2. Transformer Version LC Control Module

with Door Open

WARNING

"

If insufficient voltage is supplied, unit could
display incorrect readings. check each
sensor module for minimum required voltage
at each unit.

With 18 AWG wire, a Chillgard LS Sensor Module
can be located a maximum distance of 450 feet
from the Chillgard LC Control Module. Two
Chillgard LS four-point Sensor Modules
daisy-chained from the Chillgard LC Contr ol
Module can be connected a maximum of 150 f eet
from the Chillgard LC Control Module. Wit h 18
AWG wire, seven Chillgard M-100 sensors can be
daisy-chained from the LC Control Module to a
distance of 1500 feet.

CAUTION

"

If the Chillgard LC transformer or other AC
power is used to power the Chillgard M-100
Sensor, the Chillgard M-100 AC power must
be isolated from the LC power for proper
operation.

Table 2-1. Option Switch Table

SWITCH 1
CUSTOMER RS232
PORT SPEED SET

SWITCH 2 N/A
SWITCH 3 N/A

19,200 BPS 8, N, 1 UP

9,600 BPS 8, N, 1 DN

2-2

Chillgard LC Control Module Section 2, Installation and Set-Up

Figure 2-3. Standard Version Wiring Diagram

Figure 2-4. Transformer Version Wiring Diagram

2-3