Chromalox PK425-2 - Manual
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Table of Contents:
- Page 2 – GENERAL; Users should install adequate back-up controls and; Thermostat is not DC rated.; This control does not have an “OFF” position.; WIRING; Figure 2; Hazard of Electrical Shock. Disconnect; LT Models
- Page 3 – Hazard of Electric Shock. Extreme care; If they do not agree —; Figure 6
- Page 4 – RENEWAL PARTS IDENTIFICATION
(Supersedes PK425-1)
PK425-2
ARR
161-562792-001
JANUARY, 1988
4
and
Installation, Operation
RENEWAL PARTS IDENTIFICATION
Type ARR Inverse-Action Thermostat
© 2010 Chromalox, Inc.
Specifications – Table A
Sensing Bulb
with 7’
Standard Capillary
Temperature
Approx.
Max.
Range
Length
A.C. Rating
Model
(°F)
Style
Dia.(In.)
(In.)
(Amps)
ARR-215
60-250
5
3
/
8
4
1
/
4
ARR-219
60-250
9
3
/
16
16
9
/
32
ARR-515
200-550
5
3
/
8
3
1
/
4
ARR-519
200-550
9
3
/
16
11
1
/
4
Models installed in a moisture-resistant enclosure are designated by the suffix “LT” on the
model number.
Length
(Refer to
Specifications Table A)
Bulb
Dia.
2 / "
11 16
2 / " Ref.
3 8
2 / "
7 8
Type ARR
Type ARR-LT
Moisture Resistant Model
Figure 1
30 Amp
120-277 Vac
(1 Pole Res.)
18
FLA-72LRA
250 Vac
125 Vac
120-277 Vac
(Pilot Duty)
2
1
/
4
”
3
3
/
8
”
5
7
/
8
”
3
/
4
” NPT Conduit Holes
4
7
/
16
”
5
1
/
16
”
7
1
/
16
”
7
/
8
”
7
/
8
”
CL
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Summary
GENERAL NOTICE: Type ARR Thermostats are designed for temperature control service only. Because they do not fail safe, they should notbe used for temperature limiting duty. CAUTION: Users should install adequate back-up controls and safety devices with their electric heating equipment. Where the con...
Thermometer Load (Tank, vat, die or platen) Pilot Light LT Models: A. Entrance for wiring is provided by two 3 / 4 ” NPT conduit holes in end of housing. Wiring to control housing shouldbe in moisture-resistant conduit. B. Remove cover by removing four hexhead screwbolts. (SeeFigure 8 and 9) 2. Conn...
1347 HEIL QUAKER BLVD., LAVERGNE, TN 37086 Phone: (615) 793-3900 www.chromalox.com RENEWAL PARTS IDENTIFICATION 1 2 027-05748-001 Mounting Bracket 027-05748-001 Mounting Bracket 119-114623-003 Packing Gland 015-013696-002 Base 213-018509-002 Pilot Light 152-025660-004 Housing LT Models NEMA-I Models...
