Cashco P7 - Manual (Page 6)

IOM-P7 6
4. Excessive pressure downstream.
Possible Causes Remedies
A. Regulator not closing tightly. A. Inspect the seating. Clean and lap metal seat surfaces; replace if lapping does not remedy.
If composition seats are depressed, nicked or embedded with debris, replace trim.
B. Downstream block.. B. Check system; isolate (block) fl ow at regulator inlet - not outlet. Relocate regulator if
necessary.
C. No pressure relief protection. C. Install safety relief valve, or rupture disc.
D. Restricted piston movement. D. Ensure no moisture in spring chamber at temperatures below freeze point.
SECTION IX
NEW REPLACEMENT UNIT:
Contact your local Cashco, Inc., Sales Rep re sen-
ta tive with the Serial Number and Product code.
With this information they can provide a quotation
for a new unit including a complete description,
price and availability.
– 7 –
IX. ORDERING INFORMATION
NEW REPLACEMENT UNIT vs PARTS "KIT" FOR FIELD REPAIR
To obtain a quotation or place an order, please retrieve the Serial Number and Product Code that was stamped on
the metal name plate and attached to the unit. This information can also be found on the Bill of Material ("BOM"),
a parts list that was provided when unit was originally shipped. (Serial Number typically 6 digits). Product Code
typical format as follows: (last digit is alpha character that refl ects revision level for the product).
PARTS "KIT" for FIELD REPAIR:
Contact your local Cashco, Inc., Sales Rep re sen-
ta tive with the Serial Number and Product code.
Identify the parts and the quantity required to repair
the unit from the "BOM" sheet that was provided
when unit was originally shipped.
NOTE: Those part numbers that have a quantity indicated
under "Spare Parts" in column "A” refl ect minimum
parts required for inspection and rebuild, - "Soft
Goods Kit". Those in column “B” include minimum
trim replacement parts needed plus those "Soft
Goods" parts from column "A".
If the "BOM" is not available, refer to the cross-
sectional drawings included in this manual for part
identifi cation and selection.
A Local Sales Representative will provide quota-
tion for appropriate Kit Number.
CAUTION
Do not attempt to alter the original construction
of any unit without assistance and approval from
the factory. All purposed changes will require a
new name plate with appropriate ratings and new
product code to accommodate the recommended
part(s) changes.
3. Sluggish operation.
Possible Causes Remedies
A. Fluid too viscous. A. Heat fl uid. Contact factory.
2. Regulator can not pass suffi cient fl ow.
Possible Causes Remedies
A. Regulator undersized. A1. Confi rm by opening bypass valve together with regulator.
A2. Check actual fl ow conditions, re-size regulator; if regulator has inadequate capacity,
replace with larger unit.
B. Too much droop. B1. Review droop expected.
B2. Contact factory.