PrecisionTM Instruction Manual
G e n e r a l i n f o r m a t i o n
These instructions encompass the models
l i s t e d b e l o w w i t h t h e i r s p e c i f i c e l e c -
t r i c a l
c h a r a c t e r i s t i c s :
Cat.
No.
61510
61520
61526
61527
61528
61529
61560
61561
61600
D e s c r i p t i o n
v o l t s
“HA’* Heater
Camp Non-Bump
Heater (AC/DC)
“’H” Heater
“H” Heater
“H’” Heater
“H” Heater
“RH” Heater
“RH” Heater
“ F u l - K o n t r o l "
Heater
120
120
120
240
120
240
120
240
120
Watts
550
500
550
550
750
750
550
550
750
Amps
4 .
5
4 .
2
4 .
5
2 .
2
7 .
2
3 .
6
4 .
5
2.2
7.2
SAFETY CONSIDERATIONS AND WARNINGS:
The following guidelines are presented
to supplement the existing safety rules
enforced by your company:
1)
Safety glasses should be worn by
the operator and by anyone in the vicin-
i t y w h o
c o u l d b e s t r u c k b y l i q u i d
samples which might splash on them in
the heating process.
2)
It is recommended that a fire ex-
t i n g u i s h e r o f H a l o n 1 2 1 1 ( a t l e a s t a
5-lb. tank size) be placed conveniently
i n r e a c h o f t h e o p e r a t o r t o p r o t e c t
against sample fires which might occur.
3)
S e r v i c e o r c i r c u i t t e s t i n g s h o u l d
be attempted only by a qualified person
who has been trained with regard to the
p o t e n t i a l d a n g e r o f w o r k i n g w i t h l i v e
e l e c t r i c a l c i r c u i t r y .
WARNING:
D i s c o n n e c t t h e u n i t
from the power source whenever
I
r e p l a c i n g
e l e c t r i c a l
com-
ponents.
4)
I n s u l a t e d g l o v e s s h o u l d b e u s e d
when handling the glassware around the
h e a t e r .
5) The heater should not be used with-
o u t i t s r e f r a c t o r y t o p .
No apparatus
should touch the heater coil.
NOTE:
The glassware recommended for use
w i t h t h e s e h e a t e r s a r e 5 0 0 o r 8 0 0 m l
K j e d a h l f l a s k s , o r 500 to 1000 ml round
b o t t o m f l a s k s .
Explanation of controls
Heater Selection:
“HA” heaters (Catalog No. 61510) - The
“ H A ” h e a t e r i s a h e a t i n g e l e m e n t a n d
r e f r a c t o r y
o n l y ,
w i t h o u t h o u s i n g a n d
l i n e c o r d .
I t s a p p l i c a t i o n i s f o r c u s -
tomer-designed special setups.
“Camp
Non-Bump”
h e a t e r ( C a t a l o g N o .
61520) - The "Camp Non-Bump” heater has
a n i c k e l ,
chromium heater coil mounted
i n a c i r c u l a r r e c e s s o f a p o r c e l a i n
r e f r a c t o r y .
This heater is designed to
p r e v e n t l o c a l s c o r c h i n g o f h e a t s e n s i -
t i v e m a t e r i a l s .
Its power source can
b e e i t h e r a l t e r n a t e c u r r e n t
( A C ) o r
d i r e c t c u r r e n t ( D C ) .
Type
“H” heaters (Catalog Nos. 61526,
61527, 61528, and 61529) - There is no
control
on
the
type
“H"
heaters
because
t h e y a r e s i n g l e - h e a t u n i t s ; j u s t p l u g
them in.
WARNING:
Be sure to unplug the
u n i t a f t e r u s e .
Type ‘*RH”’ heaters
(Catalog Nos. 61560
a n d 6 1 5 6 1 ) -
T h e r h e o s t a t c o n t r o l o n
t h e
“RH” heaters can be easily set for
desired wattage from 0 to 550 watts by
r o t a t i n g t h e l i n e a r c o n t r o l k n o b w h i c h
is referenced from 0 to 100 for repeat
s e t t i n g s .
- 2 -
