Groth 8860 - Manual (Page 8)

IOM -8860
Page 8 of 13
13650 N. Promenade Blvd. * Stafford, TX 77477
Office: (281) – 295-6800 * (800) – 354-7684 * Fax: (281) – 295-6999 * www.grothcorp.com
TABLE 3
SPRING TABLE: MODEL 8860
Flange
Min. Setting Max. Setting Spring P/N Scale P/N
Size
2” 2” WC 12” WC SPR8860020120 313000101
2” 8” WC 24” WC SPR8860020220 313000201
3” & 4” 2” WC 12” WC SPR8860030120 313000101
3” & 4” 8” WC 24” WC SPR8860030220 313000201
6” & 8” 2” WC 12” WC SPR8860060120 313000101
6” & 8” 8” WC 24” WC SPR8860060220 313000201
10” & 12” 2" WC 6” WC SPR8860100320 313000301
10” 5” WC 12” WC SPR8860100520 313000401
10” & 12” 10” WC 22” WC SPR8860100420 313000501
10” & 12” 20" WC 44” WC SPR8860100620 313000601
12" 3” WC 8” WC SPR8860100520 313000701
12" 5” WC 12” WC SPR8860120520 313000401
VI. TROUBLESHOOTING GUIDE
PROBLEM INSPECTION SUGGESTED CORRECTIVE ACTION
Vapor flowing at line
pressure below specified
set point. Flow indicator or vapor
discharge. Damaged seat/disc or setting too low.
If original pressure setting has not been disturbed, remove
regulator and repair.
Vapor not flowing at line
pressure above specified
set point. Flow indicator or vapor
discharge. Damaged diaphragm or pressure setting too high.
If original pressure setting has not been disturbed, remove
regulator and repair.
Inspect the bushings for debris or damage.
Gas leaking from upper
vent. Emission indication
near the regulator. Damaged diaphragm.
Remove regulator and replace diaphragm.
System pressure above
specified operating
range. Observe pressure
indicator during
operation. Damaged diaphragm or pressure setting too high.
Vapor flow exceeds capacity of regulator.
System pressure below
specified operating
range. Observe pressure
indicator during
operation. Damaged seat/disc or setting too low.
Insufficient vapor production.
VII. PREVENTATIVE MAINTANANCE
Periodically, while in service, examine the regulator for leakage at bolted connections, adjusting
screws, and vent. Test for process vapor emissions from vent caps.
Periodically, out of service, examine seat and pallet for a smooth surface to ensure proper seating and
sealing. Examine actuator diaphragm for cuts, or unusual wear.
VIII. RECOMMENDED SPARE PARTS
 Spring; see Table 3 for correct part number
 Vent part number 285320147 (1/4” NPT)
 Soft Goods Kit; see Table 4 for correct part
numbers
Table 4: Soft Goods Kits
Size Buna-N EPDM FKM
2”-4” KS886002B KS886002E KS886002V
6”-8” KS886002B KS886002E KS886002V
10”-12” KS886002B KS886002E KS886002V