ML19305B201

Toxicity Studies W/1,1,2-Trichloro-1,2,2-Triflouroethane

ML19305B201
Person / Time
Site:	Framatome ANP Richland
Issue date:	09/19/1979
From:	E.I. DU PONT DE NEMOURS & CO., INC.
To:
Shared Package
ML19305B199	List: ML19305B198 ML19305B201
References
14191, NUDOCS 8003190317
Download: ML19305B201 (31)

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The results of several studies of the toxicity and physio-logical effects of 1,1,2-trichloro-1,2,2-trifluoroethane are summarized below.

The product is sold as " Freon" 113 refrigerant,

" Freon" TF solvent, and " Freon" Precision Cleaning Agent.

In use under conditions where a worker would be exposed to high concen-trations (and low oxygen content) or where the vapors would be exposed to extremely hot surfaces or flames, see bulletin S-30 for a description of practical handling conditions.

l A.

Threshold Limit Values

• The American Conference of Governmental Industrial Hygienistsi has assigned a threshold limit value of 1,000 ppm by volume for 1,1,2-trichloro-1,2,2-trifluoroethane.

This is the highest rating given to any product with the exception of carbon dioxide.

Some other compounds having a value of 1,000 are acetone, butadiene ethanol, and ethyl chloride.

The values listed refer to time,

weighted average concentrations for a normal workday.

As pointed out by the Conference, " Threshold limits should be used as guides in the control of health hazards and should not be regarded as

~

fine lines between safe and dangerous concentrations."

"The threshold limit values refer to air-borne concentrations of sub-stances and represent conditions under which it is believed that nearly all workers may be repeatedly exposed, day af ter da,

without adverse effect."

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" Threshold limits are based on the best available informa-tion from industrial experience, from experimental human and animal studies, and, when possibic, from a combination of the three.

These values are based on various

• criteria of toxic effects or on marked discomfort; thus, they should not be used as a common denominator of toxicity, nor should they be considered as the sole criterion in proving or disproving diagnosis of suspected occupa-tional disease. "

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b.

Skin Irritation

./*N Trichlorotrifluoroethane, CC1,F-CC1F, is low in toxicity as 2

judged by skin contact studies witII rabbits.

Application of CC12 F-CC1 F2 to the skin of rabbits gave an ALD of >11,000 mg/kg.

The only of fect was a local irritation of the skin at the site of application, and histology disclosed alterations in the dermis:*.

5 tw.

and adjacent connective tissues.

There were no systemic changes attributable to treatment.

Applications of CC12F-CC1Fz at a very high dose of 5000 mg/kg each day for 5 days resulted in fluctuations in weight and lamage to the skin evident grossly and histologically.

Slight liver changes were observed microscopically but no other systemic changes were disclosed.

2 C.

Eye Irritation Studies with rabbits showed no serious irritation when the eye was ex3osed to trichlorotrifluoroethane liquid.

The tests are descriaed in Table I.

Table I.

Studies on the Effect of Trichlorotrifluoroethane on Rabbit Eyes, at the lla s ke l l Laboratory c Animals tested: 3 albino male rabbits 3

s.

Clinical Effect During Three Day Exposure Observation Period v

(>

0.1 ml. in each of 3 eyes 1/3 nild conjunctivitis whicif were washed with water at 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; all eyes

• 20 seconds after exposure, normal at 48 and 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

0.1 ml. in each of 3 eyes 1/3 mininal corneal dull-which were not washed, ness at 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; all eyes normal at 48 and 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

D.

Acute Inhalation Studies Several tests have been performed to study the acute toxicity of trichlorotrifluoroethane.

These tests were performed with animals and some caution is required in extending the animal data to human exposure.

I!owever, animal studies are very valuable in studying the toxicity of a material and comparing it with other materials studied under the same conditions.

Tests with trichloro-trifluoroethane have been conducted at Du Pont's liaskell Laboratory, at the Underwriters' Laboratories, and at the Philadelphia Naval Shipyard.

These studies indicate that trichlorotrifluoroethane has a low order of acute inhalation toxicity.

The term " Approximate Lethal Concentration" (ALC) is commonly used to describe the toxicity of a conpound.

The ALC as defined is the lowest concentration which is lethal'for one or more of a group of aaimals exposed for a given time.

The..ALC is censidered to be a close approximation of the LC-50,

_ {T\\

which is a statistical expression for the concentration lethal to 50%

of a group of test animals.

The ALC for trichlorotrifluoroethane l

is about 90,000-100,000 ppm for a four-hour exposure to rats 3 3

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1. - 'llaskell Laboratory Studies '

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At Du Pont's liaskell Laboratory,.'6 groups of 4 rats each were exposed to high concentrations of trichlorotri-fluoroethane.

The results are summarized in Table II.

From these tests it is noted that the ALC for a tour-hour 100,000 ppm.

In exposures at 500,000 rat exposure was and.220,000 ppm all four rats died in 3 to 5 minutes, and the effects were uncomplicated by anoxia in the exposure chamber.

2.

Navy Tests" involved exposing 8 groups of 3 rats for The Navy test 8 different periods ranging from 10 minutes to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> atlevels of concentratio in air.

None of the 24' rats ppm of trichlorotrifluoroethaneResults of the 2-hour tests in in these experiments died.

severe symptoms were noticed are given in which the most Table III.

ad-While low oxygen concentrations evidently did not versely influence any of the animal exposures referred to it may be expected in situations where extremely

above, vapor concentrations are maintained that a

high solvent resultant low oxygen level could prove a deleterious com-tq ponent of an accidental exposure, 5

3.

Underwriters' Laboratories' Tests Inc.

In tests conducted at Underwriters Laboratories, guinea pigs were exposed in an enclosure for 5 minutes, 30 minutes, I hour, and 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to graded concentrations of trichlorotrifluoroethane.

A group of 12 guinea pigs was used at each concentration at the start of the test; three guinea pigs remained for the full 2-hour exposure for the tests at highest concentration).

period (except Results of these tests are given in Table IV.

The Underwriters" Laboratories have studied the toxic The compounds properties of a number of different products.

have been classified into a nunber of different groups, according to their level of toxicity.

The significance of uping and examples are shown in Table V.

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Sub

_c Inhalation-Studies relatively Repeated exposures to trichlorotrifluoroethane at low concentrations have been studied for*possible effects of long At concentrations up to abour. 5,000 ppm no toxic effects exposure.

Studies uere conducted by the IIaskell Laboratory were discovered.

and by the U. S. Navy.

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Table II.

Summary of Acute Toxicity Studies with Trichlorotri-3 fluoroethane on Rats at !!aske ll Laboratory Nominal Expo-

. lor-Pathology Concen-

sure, Clinical tration, llodr:

Signs-tal-4.i.

ppm

Min, ity 67,000, 4:00 Tonic convulsions, pro-0/4 No examination made.

nounced tremors, in-i coordination, slight cyanosis, hyperpnea and polypnea. Post exposure-slight discomfort only.

80,000 4:00 Initial tonic convul-0/4 No examination made.

sions with pronounced tremers followed by un-responsiveness, polyp-nea, and hyperpnea.

90,000 4':00 Tonic convulsions, pro-2/4 No examination made.

1 nounced tremors, in-coordination, inactivity, unresponsive, dyspnea, pallor.

jpg 100,000 4:00 Initial tonic convulsions 2/4 Fatalities: Lungs con-with pronounced tremors gested, cdematous, followed by unresponsive-hemorrhagic; Kidneys f.

ness, dyspnea, and slight Liver congested.

Sur-cyanosis.

Two died with-vivors(14 days after in 2:49 hours.

expsoure): Lungs -

slightly congested.

150,000 2:36 Initial tonic convul-4/4 Lungs: congested, sions with pronounced edematous, hyperinflated,

.i tremors followed by un-hemorrhagic; Liver:

responsiveness,s1. dyspnea, slightly_ congested.

s1. cyanosis and convul-sions prior to death (within 0:50-2:36 hr.)

220,000 Oil 5a Initial tonic convul-4/4 Lungs: congested.

sions with pronounced tremors, unresponsive-ness, hyperpnea, slight cyanosis. Convulsions prior to death (within 10 to 15 minutes).

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' D 0:05 Tonic convulsions with 4/4 Lungs: congested, pronounced tremors, un-slightly edematous.

responsiveness, slight jD hyperpnea, cyanosis.

Death within 3-5 min.

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4p Tab le II. Cont' d.

Pathology Nominal Expo-

'Mor-Clinical tal-Concen-

sure,

tretion, Hour:

Signs ity 4/4 Lungs: congested, s1.

Min, ppm Tonic convulsions with edematous and 900,000 0:03 pronounced tremors, hyperinflated.

(nominally.

hyperpnea, cyanosis, 100 % s'aturated Death within 3 min.

j vapor)

Material dalivered by metering pump Exposure by 50% dilution of saturated vapor.

a b

Acute Inhalation Toxicity in Rats Exposed to Trichloro-the Philadelphia Naval Shipyard"

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Table III.

trificoroethane at

.o.

Nominal Pathology Concen-Exoc-Mortal-

tration, s u'r e,

Symptoms ity*

17,600 2

Mild Excitement, fully 0/3 Moderate congestion

-Hours upm of liver and kidneys conscious with no loss of corrdination.

39,100 2

Excitement, followed 0/3 Kidneys and liver g#

g pale, some fatty by loss of coordination deposition.

but no loss of con-sciousness.

50,900 10 Excitencnt followed by 0/3 Liver shows mild congestion. Kidney

Min, incoordination but no pala with focal loss of consciousness, neCTosis.

Number of rats died / Number exposed Haskell Laboratory Studies) 1.

The effects of repeated exposures to sablethal concentra-Du Pont's tion's of trichlorotrificoroethane were investigated at Haskell Laboratory by exposing 10 male and 11 female rats to seven hours a day, five days an average of 2,5 20 ppm by volune, The rats survived the ex-a week for a total of 30 exposures.

the exposure posure and showed no signs of toxicity throughoutgain during the ex The rats had a normal.eight gros:. or microscopic pathology attributed to tri-period.

last exposure in any period.

~Ne found after thedeviations in the weights chlorotrifluoroethane wasThere were no significant of the raes.

of, major organs.

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2.

Navy Studies 4 Ik In the Navy subacute toxicity stu'dy, 12 rats were exposed to 5,000 ppm by volume of trichlorotrifluoroethane for a period of seven hours a day for 30 days.

None of the rats died.

They did not gain weight normally.

At autopsy, three rats showed'

' slightly pale livers; others appeared normal and kidneys were normal.

Table V.

Underwriters' Laboratories' Classification of Comparative Life llazard of Gases and Vapors Group Definition lix amp l e s 1

Gases or vapors which in concentrations of the Sulfur dioxide order of 1/2 to 1 percent for durations of ex-posure of the order of 5 minutes are lethal or produce serious injury.

2 Gases or vapors which in concentrations of the

Ammonia, order of 1/2 to 1 percent for dura *. ions of ex-Methyl bromide posure of the order of 1/2 hour are lethal or produce serious injury.

3 Gases or vapors which in concentrations of the Bromochloro-order of 2 to 2-1/2 percent for durations of methane, Carbon exposure of the order of I hour are lethal or tetrachloride, produce serious injury.

Chloroform, Methyl formate ([

4 Gases or vapors which in concentrations of the Dichloro-order of 2 to 2-1/2 percent for durations of

ethylanc, exposure of the order of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> are lethal or Methyl chloride, produce serious injury.

Ethyl bromide between Appear to classify as somewhat less toxic than Methylene 4 and 5 Group 4

chloride, Ethyl chloride Much less toxic than Group 4 but somewhat

" Freon" 113, more toxic than Group 6

" Freon" 21 Sa Gases or vapors much less toxic than Group 4 "Fre on " 11, but more toxic than Group 6.

" Freon" 22,

" Freon" 114 B2,

" Freon" 502, Carbon dioxide 5b Gases or vapors which available data indicate Ethane, Propane, would classify as either Group 5a or Group 6 Butane 6

Gases or vapors which in concentrations up to

" Freon" 13B1, at 1 cast about 20 percent by volume for dura-

" Freon" 12, tions of exposure of the order of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> do

" Freon" 114, not appear to produce injury.

" Freon" 115 h

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F.

Decomposition Products of Trichlorotrifluoroetjiane Trichlorotrifluoroethane will decompose when exposed directly to gas flames, electric resistance heaters or other sources of high __

temperature.

The products of decomposition include acids and other irritat ing' mate rials.

These products can irritate the nose and upper respiratory system so that fairly low concentrations serve as a warning of their presence.

A number of tests were conducted by the Undprwriters' Laboratories, Inc.5, which included analysis of the air at 'several intervals of time af ter trichloroti lfluoro-ethane was exposed to different sources of heat.

The 1esults of these analytical studies are shown in Tabic VI.

These decomposition products are toxic as shown in " sable VII but the practical hazard is very slight since it is almost impossible for a person voluntarily to remain in the presence of the 'ecomposi-tion products under circumstances where physiological dam c can occur.

. G.

Human Exposure Tests These studies were conducted ia' order to ascertain what effects trichlorotrifluoroethane might have on human beings per-forming work requiring manual dexterity, vigilance, and clear thinking.

Two human volunteers were exposed for 1-1/2 hours to safe concentrations of this compound ranging from 1500 to 4500 ppm.

)

During exposure the subjects were given tests of performance:

1.

The Crawford Small Parts Dexterity Test Part A of this test consisted of taking small set scFews and with the aid of a screwdriver screwing them through tapped hoics in a metal plate.

The score represants the number of screws completely inserted in a period of three minutes.

Part B of this test consisted of inserting metal pins into a series of holes in a plate with the aid of twec:crs.

Small metal collars were then dropped over the pins as they projected'from the plate.

The score represents the number of pins and collars assembled in three minutes.

2.

Tite Short Employment Test-Clerical This test was one of vigilance and consisted of coding a series of names according to the financial balance shown against these names on 9 facing page of the test.

The number correctly coded in three minutes was taken as the score.

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Card Sorting 47

- A pack of playing cards was sorted into suits as

-rapidly.and accurately as possible. 'The time taken to compl.ete the task was taken as the score.

4.

Card Sorting with.an Auxiliary Task In this test the subject sorted the cards as above but at.the same time was asked to add groups of three single digit numbers presented to him at fixed inter-vals by.means of a tape recorder.

The time taken to but a complete the card sorting was taken as the score, record of the errors in addition and in card sorting was also kept.

H.

Industrial Exposure Data:

Kennedy Space Center scientists, Imbus and Adkins,

• have published a study on human occupational exposure to tri-chlorotrifluoroethane (" Freon" 113 ) vapor".

They concluded, "At this time, it is our opinion that there is no evidence of adverse effects from exposure to trichlorotrifluoroethane under the conditions encountered by these personnel."

Pertinent data include:

1.

Fifty workers, average age 34, exposed to trichloro-([T trifluoroethane were medically ccmpared to fifty workers, average age'37, not exposed.

All workers were male and were randomly ~ selected.

2.

Ave rage length of time that personnel were exposed was 2.77 years for six hours per working day.

The trichlorotrifluoroethane exposure varied from a 3low of 46 ppm to a high of 4,700 ppm, depending on the operations being performed.

The mean exposure concen-tration was 699 ppm and the median 435 ppm.

Kennedy Space Center uses trichlorotrifluoroethane for cleaning, hydrocarbon sampling, particle sampling, and general degreasing.

I.

Cardiac Sensitization Data

-Dr. C. F. lleinhardt and coworkers at Du Pont's !!askell Laboratory for Toxicology and Industrial Medicine have reported' that the inhalation of certain unsubstituted~and halogenated to epinephrine hydro, carbons can sensitize the mammalian. heart (adrenalin).

This phenomenon is generally termed. cardiac Cardiac sensitization r.crmally involves two -

sensitization.

coexistinC factors:

og ho %ssls)e

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. Exposure to high concentrations of cert, din halogenated i

or unsubstituted hydrocarbons.

2..'. Increased adrenalin secretion brought on by either emotional or physical stress.

Hask 11 researchers exposed Beagle dogs to " Freon" 113 for a duration of 10 minutes.

The dogs received a control injuction of epinephrine (0.008 mg/kg) prior to the exposure, and a challenge injection (0.008 mg/kg) after 5 minutes' exposure.

The opinephrine injection administered in nine seconds is many times the normal adrenalin level a dog will secrete during this period of time.

An electrocardiogram was recorded throughout each experiment.

A positive response is reported when, following the challenge injec-tion, either multiple consecutive ventricular beats or ventricular fibrillation develops.

" Freon" 113 produced cardiac sensitization at concentra-

. tions of 5,000 ppm by volume in air.

These exposures are 5 times the recommended Threshold Limit Value (TLV) which is 1,000. ppm or 0.1% by volume.

The experimental protocol used by Reinhardt, et al, provides a sensitive and rigorous screening experiment for deter-mining the cardiac sensitization potential of a given. compound.

Applying these results to human exposure provides a suitable margin of safety at the TLV.

Stopps and McLaughlin have determined'* the concentration of " Freon" 113 necessary to produce central nervous

,(D system (CHS) effects in man is 2,500 ppm (0.25%) in inspired air.*

This observation is important as the cardiac sensitization thresh-old for " Freon" 113 will normally not be reached in the absence of ONS effects; therefore, the CNS effects should be the governing factor for hygienic standards such as Threshold Limit Values, Adherence to the TLV will prevent workers from being exposed to hazardous concentrations of " Freon" 113 Many'other industrial solvents, such as hexane, heptane, benzene,-xylene, toluene, petroleum ether, gasoline, methyl chloro-form, and trichloroethylene, produce cardiac sensitization effects.

Should a worker be overcome by solvent vapors, the attending phy-sician must not administer an injection of epinephrine or similar heart stimulant.

The worker should also be given fresh air immediately, and should not be allowed to exercise or-exert himself.

" Described in Section G on page 8.

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Conclusions (1

Within the limits of these experiments there appears to be no significar.t ef fect of trichlorotrifluoroethane on psychomotor performance at the 1,500 ppm level.

At the 2,500 ppm level there is definite but slight deterioration as sho'.n by the scores on the more complicated tasks and for the higner concentrations there is evidence of a further decrease in performance for each increase in concentration.

When the series o? tessa.la s completed the liver function tests, urinalysis, and hanate' ogical s t ud i e ;; ;;17en be fore exposure were repeated on each subj ecs and showed no significant change from the pretest series.

Additional Toxicity Work Trichlorotrifluoroethane, CC1 F-CC1F;, as indicated by rat 3

f 3,000 studies has a low order-of oral toxicity with an LD50 mg/kg.

One investigator has administered a massive oral dose to a female dog lightly anesthetized with sodium pentobarbital.

The total dose given was 92,000 mg/kg; death occurred in 1 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

Some dogs have survived oral dose of this magnitude, and recently the same worker reported that a human under anesthesia accidently received about one liter (estimated to be about 20,000 mg/kg) of cold CCl F-CClF2 in the stomach.

This produced immediate but 2

transient cyanosis.

The individual survived and reported only severe rectal irritation and diarrhea for 3 days thereaf ter.

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Table VI.

Results of Analytical Tests of Decomposition Products of Tri-chlorotrifluoroethane at the Underwriters' Laboratories, Inc.5 i.3,i.i C....a...i.e.

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Tabic VII.

Toxicity Tests of Decomposition Products of Trichloro-trifluoroethane at the (Jnderwriters ' Laboratories, Inc.5 Initial Conc.

Heat Observation of Three Guinea Pigs During Exposure Tests PPM Source 5' minutes 30 minutes Autepsy Findings 12,000 Gas Flcme(1) Coughing in 2 minutes, naso! discherge irritation, lachryrration, and choking.

w fach fmation, trouble breathing in 5 Uncbte to stand in 15 minutes. All I

minutes, recovered in 1 day, died in 16 to 17 minutes of exposure.

27,000 Gas Flame (I) Cougning in 1 minute, nasal discherge, Gespi.ig. Unabte to stand in 7 mins.

Lungs of A enferged end edemetous; and lachrymation. White fumes et All died in 11 to 13 min. of expo:ure.

no pus. Liver and kidneys mildly nostrils, chciing in 4 minutes. Two congested. No onlier patho!asy, died (A) 1 day af ter exposure. Third animo! eccovered in 2 days.

Q 52,000 Elec. Coil ) Occasional sniffing and chewing.

Less of coordination, trernors, sniff-Lungs of B congested and ederrotous:

G Recovered quickly.

ing, nasal discherge. Slight no pus. Liver cnd kidneys mildly techrymation. One pig (B) was congested. No other pcthology.

outopsied 2 days offer exposure. One pig recovered in I week; one pig died 6 deys offer exposure S

(1) Non-luminous (blue) flame c.c Ih (2) Temperature of coII: 1166'F. oftee 30 minutes gg p

i l

-)

b h

i -.

- l li i b

,Re fe rence s -

1.

Adopted at the 26t.h Annual Meeting of the American Conference-of Governmental Industrial flygienist.s, Philadelphia, Pa.

April 25-28, 196/.

1 2.

E. I. du Pont de tJemours &-Co. (Inc.), ifankell Laboratory, lteport Md flo. 13 39-62.

i 3

E. I. du Pont de Nemours & Co. (Inc.), Haskell Laboratory, Reports MR 627,-70-62, 83-62.

4.

" Toxicity Tests of !!onflammable Solvent Cleaner for Insulated Mot.or Parts", ITL Test flo. 2335, Progress Report, 11S-011-001, 8

Industrial Tout Laboratory, Philadelphia !!aval Shipyard.

5.

Underwriters' Laboratories, Inc., '"The Comparative Life, Fire and Explosion liazards of Trichlorotrifluoroethane", Misc.

Hazard liv. 3072, April 7, 1941.

.6.

E. I. du Pont de tiemours & Co. (Inc.), liaskell Laboratory Report j

tio. 3-54, MH-280, March 16,1954 i

7 E. I. du Pont de tiemours & Co. (Inc. ), Haskell Laboratory Report flo. 141-64, MR-767, llovember 12, 1964.

8.

Imbus, 11.

R.,

and Adkins, C., Arch. Environ. liealth 24, 1

257-261 (1972).

9 Reinha r'd t, C.

F.,

Mullin, L.S., and Maxfield, M.

E.,

" Halo-

, carbon-Epinephrine-Induced Cardiac Arrhythmia Potential of Some Common Industrial Solvents," presented at the llth Annual Necting, Society of Toxicology, 'dilliamsburg, Virginia, March 5-9, 1972.

and Applied Pharmacology for publication.Also submitted to the Journal of F

10.

.Stopps, G.

J., and McLaughlin, M., " Psychophysiological l

Testing of liuman Subjects. Exposed to Solvent Vapors,"

American Indust, rial Hygiene Association Journal, Vol.

pg. 43-50, 1967.

28, 4

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• T ATTACIf4ENT 2 EQUIPMENT DETAILS mm

...@.i.:: EEALTH PHYSICS

~

!b.

1. .....' SYSTEMS, I N C.

2727 N.W. 43RD ST.

GAINESVILLE, FLORIDA 32605

[904) 373-6066 August 8,1979 Mr. Don Reinstein Exxon Nuclear 2101 Horn Rapids Richland, Washington 99352

Dear Mr. Reinstein:

Dr. flike Reynolds has requested me to send you the enclosed diagram and measurements for your criticality program. All measurements were taken inside the equipment. Tolerances are plus or minus a quarter to one-half inch.

If you find these to be inadequate or in-complete, please call me at the HPS Office (904-373-6066).

Respectfully,

-HEALTH PHYSICS SYSTEMS, IllC.

N Rod navis Director of Operations RD/baa cc:

RD Mike Reynolds Enclosure N

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3 RADKLI.EN Parts Specifications

+

Dru:A - shell 20 gauge spun 304 2B stainless steel 18.25 inches wide 29.5 inches dia;r.eter

-in caps -

20 gauge spun 304 23 stainless steel

' Pump (Berks pwups) 3 phase dual voltage; 220 or 380 VAC 2 inches suction 2 inches discharge 62 PSI at 14 feet case -

cast iron shaft -

416 stainless steel ceramic carbon viton-seal plugs -

. bronze Fan r.:otor 3 phase dual voltage; 220 or 380 VAC NIM \\ 50 C face 1.6 amp

.5 hp Wash motor (2 in 1 motor) '3 phase dual voltage; 220 or 280 VAC Extract motor 208 - 240 60 cycles 1.8/0.37 kw 2.5/0.5 hp 345C/300 rpm 6.7/4.5 - 5.4 amps Freezer compressor mater - 3 p!'ase (220 VAC - 6011:)

9 air cooled condenser 4.'2'. /. ISO VAC - 50 11:)

receiver -

7.0 a'nps 9

2 hp g

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9 4

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flare 3/8 receive 90% full 8.75 pounds 7500 Bns/hr

-10*F-BTU / hour 90*F ambient

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- R - 12 flow 4.7 ton flare 3/8 inch 27 sq. inches (area) 75'F drop 116.5 lixpansion value -

flare 3/8 inch inlet 1/2 inch inlet brass (Parker pce 3fw)

-40*F to +50*F-evaporator range livaporator 12 x 10 5/8 x 4 R x 7 FPI copper - crone plated Diying air heater - one piece three elements unit

.1000 watt each 220 or-380 VAC

.430 inch diameter stainless steel 2.5 inch brass plug T - weld braced to shelf 32, inches long

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-(liis t i lla tor )

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cold rolled' steel 3/16 10 gauge coated

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carbon core paper cartridge (DC filters)

' Filter hyper h FSS 520L part 23R10 Carbourundum stainless steel outside cotton micro lent screen nuslen cloth-llutton screen

- stainless steel 10 cams progranner - 15 A 5 watts 3 cains progr;u oner

• Note all electrical p:f rts - CSA or UL listed Lanips (Oticago miniature)

- 25P - 307 21 volts

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Cont racts St.A - 12 SLA - 16 3

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r 2K54 - 73 Switches.

.(Carling switch)

Wash extension timer - 702-241 I (Detroll)

-Pipes

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- flint ficx epoxy powder electro statically and; rotationally applied heat fused at 400'F for 20 minutes thickness 20 mills I <* ~

10 mills on machined surfaces 1

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