Manualshelf

Install Instructions

ManualsBrandsHoffman ManualsBoiler PartsSPS-30 Spring Pressure Control Pilot
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START-UP PROCEDURE
• Never open a reducing valve without positive indication that the high side is clear of condensate.
Be sure no one is in area of any open end of pipes when steam is turned on.
Failure to follow this caution may result in serious burns.
!
CAUTION
Hearing protection is required if drain valves are open to atmosphere.
Failure to do so may result in hearing loss.
!
CAUTION
1. Make sure inlet stop valve is closed.
2. Open 1/4 NPT feedback control line shut-off valve.
3. Open outlet stop valve and all equipment drain valves.
Allow system to drain completely.
4. Make sure bypass globe valve is tightly closed.
5. Close pilot valve by unscrewing adjusting nuts to release compression on the adjusting
spring.
6. Slightly open inlet stop valve. Open only enough to allow steam into section. Do not
allow pressure to build up. Blow down strainer.
7. Gradually compress adjusting spring until the pilot valve opens.
8. Allow system to stabilize.
9. Open inlet stop valve slightly more. A little pressure will build on the regulator diaphragm,
which allows the regulator to open. Then, steam should begin to flow.
10. Open inlet stop valve more.
11. Allow system to stabilize.
12. Check for leaks.
13. Close drain valves after system is hot and drain valves are blowing steam (this indicates that
all condensate has been removed).
14. Open inlet stop valve until about half open. If there are no problems, open completely.
15. Adjust spring pilot to control the system at desired pressure. The system pressure can be set
for full steam or partial steam flow.
Full Steam Flow - If the spring pilot is adjusted to the required reduced pressure while the
system is running at full steam flow, then the reduced pressure will rise approximately 10%
when the system is running at low steam flow.
Partial Steam Flow - If the spring pilot is adjusted to the required reduced pressure while the
system
is running at 5 - 10% of full steam flow, the reduced pressure will fall (droop)
approximately
10% when the system is running at full steam flow.