Chromalox PK425-2 user manual

Summary of the content on the page No. 1

Installation, Operation
4
ARR
and
(Supersedes PK425-1) PK425-2
RENEWAL PARTS IDENTIFICATION 161-562792-001
JANUARY, 1988
Type ARR Inverse-Action Thermostat
3
3 /8”
Specifications – Table A
1
2 /4”
Sensing Bulb
with 7’
Standard Capillary
Temperature Approx. Max.
Range Length A.C. Rating
Model (°F) Style Dia.(In.) (In.) (Amps)
7 3 1
5 /8” ARR-215 60-250 5 /8 4 /4 30 Amp
120-277 Vac
(1 Pole Res.)
3 9
ARR-219 60-250 9 /16 16 /32
18
FLA-72LRA
250 Vac
3 1
ARR-515 200-550 5 /8 3 /4
125 Vac
120-277 Vac

Summary of the content on the page No. 2

GENERAL NOTICE: Type ARR Thermostats are designed for temperature Power Supply — WARNING:Use on AC only. control service only. Because they do not fail safe, they should not Thermostat is not DC rated. be used for temperature limiting duty. Control Range — The following temperature ranges are available: CAUTION: Users should install adequate back-up controls and Fahrenheit safety devices with their electric heating equipment. Where the con- 60 to 250 200 to 550 sequences of failure may be severe

Summary of the content on the page No. 3

WIRING Figure 9 Figure 6 Figure 7 Figure 8 LT Models: 11). Note: Electrical connections should be made with gener- 3 A. Entrance for wiring is provided by two /4” NPT conduit ous loops of wire — approximately 6” per lead. holes in end of housing. Wiring to control housing should 3. Replace cover and tighten screws. be in moisture-resistant conduit. 4. Replace dial knob. (NEMA-I models only). B. Remove cover by removing four hexhead screwbolts. (See 5. Note: If load amperage or voltage rating exc

Summary of the content on the page No. 4

RENEWAL PARTS IDENTIFICATION NEMA-I Models LT Models 015-013696-002 152-010971-001 Base Cover 027-05748-001 Mounting Bracket 152-025660-004 Housing 1 2 027-05748-001 Mounting Bracket 119-114623-003 Packing Gland 213-018509-002 Pilot Light 12 Model Dial Knob Thermostat Sub-Assembly ARR-215 169-046036-001 300-057437-001 ARR-219 169-046036-001 300-057437-002 ARR-515 169-046036-002 300-057437-003 ARR-519 169-04636-002 300-057437-004 Limited Warranty: Please refer to the Chromalox limited warranty ap