Bell & Gossett HS 234E User Manual
INSTRUCTION MANUAL
!
HS-234
REVISION E
Hoffman Specialty
®
Series 8C and 9C
Thermostatic Module
C AUTION
WAR NING
• Before using product, read and understand instructions.
• Save these instructions for future reference.
• All work must be performed by qualified personnel trained in the proper application, installation,
and maintenance of steam systems, in accordance with all applicable codes and ordinances.
• To prevent serious burns, wear heat resistant gloves when opening and closing
steam valves, or handling hot equipment.
CAUTION
• To prevent serious burns, the internal pressure of the trap must be 0 psi (0 bar) before servicing.
ailure to follow this caution will cause personal injury.
F
INSTALLATION –
For Hoffman Specialty Series 8C or 9C with old style disc type elements
1. Remove the trap cover (A) from the body (B).
B
A
J
E
B
B
F
G
H
A
C
D
2a. Unscrew the thermostatic element (C) from
the cover (A).
b. Discard the old thermostatic element and
shroud (
, and washer (D).C)C)
3. Using a 3/4” (19mm) socket wrench,
remove and discard the seat (E) from
the trap body (B).
C
4. Using a scraper, remove any scale or
debris inside the trap body (B) especially
around the seat area (F). Do not scratch
seating surface area.
5. Screw the new thermostatic
module (G) into the threaded port (H)
inside the trap body.
6. Using a spanner wrench (J),
tighten the module to approximately
12 lbf•ft (16 N•m).
Note: spanner wrenches are available
from Hoffman Specialty.
Specify part no. 600209.
2
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