Custom Search
|
|
|
||
 In descending order of accuracy, the dials and readouts seen during control and
sensor testing are:
Control digital display
Most accurate:
Digital ohmmeter
Analog ohmmeter
Resistor color code
Control tester dial
Control adjustment pot dials
Least accurate:
TABLE 4-4:
Characteristics of Currently Available Controls (As of January, 1988)
High Limit: (F)
On/Off: (F)
Model:
Manufacturer:
Type:
Adj: 80-215
3K/10K
Adj: 50-100
TempTrak II Series
Heliotrope
None, 160, or 180
20/3 or 10/3
DTT-64 Series
10K
General*
160 or 180
18/5 or 9/4
DTT-84/94 Series
10K
180
30/3
DTT-84DD
10K
None, 160, or 180
20/5 or 10/5
DTT-74 Series
10K
Adj: 110-230
Adj: 8-24/4
Independent
10K
CM-30/32
Adj: 8-24/4
Adj: 50-104
10K
CM-33
Energy
Adj: 60-160
Adj: 15/4 to
10K
CM-50
40/20
Adj: 105-212
20/5 or 8/3
10K
C-30 Series
Adj: 62-104
4/1 or 8/3
10K
C-35 Series
Pyramid
All
163
14/3
10K
Controls
20/3 or 12/3**
160
Rho Sigma
RS504 Series
10K
Adj: 120-220
RS121 Series
20/3
10K
Per specification
20/3.5
RS360 Series
10K
* Older Heliotrope General Controls are all 3K
** Proportional control: The pump motor is run at a speed proportional to the
differential. This type of control is rarely used.
NOTE
I
Whenever checking controls or sensors, also check to be sure the
collector with the sensor is properly grounded.
TROUBLESHOOTING
119
4.3 TROUBLESHOOTING OPERATIONS
|
 
|
|
|
||
