Cashco 1000 HP Basic - Manual (Page 3)

3 IOM-1000HP-Basic
4. Crack open the outlet (downstream) block
valve.
5. Slowly open the inlet (upstream) block valve ob-
serv ing the outlet (downstream) pressure gauge.
Determine if the regulator is fl owing. If not, slowly
rotate the regulator adjusting screw clockwise
(CW) until fl ow begins.
6. Continue to slowly open the inlet (upstream) block
valve until fully open.
7. Continue to slowly open the outlet (down stream)
block valve, especially when the down stream pip-
ing system isn't pres surized. If the outlet (down-
stream) pressure exceeds the de sired pres sure,
close the block valve and go to Step 2, then return
to Step 4.
8. When fl ow is established steady enough that the
outlet (downstream) block valve is fully open, be-
gin to slowly close the bypass valve if in stalled.
9. Develop system fl ow to a level near its expected
normal rate, and reset the regulator set point by
turning the adjusting screw CW to increase outlet
pressure, or CCW to reduce outlet pres sure.
10. Reduce system fl ow to a minimum level and
ob serve set point. Outlet pressure will rise from
the set point of Step 9. The maximum rise in
outlet pressure on de creas ing fl ow should not
exceed the stated upper limit of the range spring
by greater than 30%; i.e. 10–40 psig (0.7-2.75
Barg) range spring, at low fl ow the outlet pres sure
should not exceed 52 psig (3.6 Barg). If it does,
consult factory.
SECTION V
V. SHUTDOWN
1. On systems with a bypass valve, and where sys-
tem pressure is to be maintained as the regulator
is shut down, slowly open the bypass valve while
closing the inlet (up stream) block valve. Fully
close the inlet (up stream) block valve. (When on
bypass, the system pressure must be constantly
observed and manually reg u lat ed.) Close the
outlet (downstream) block valve.
2. If the regulator and system are to both be shut-
down, slowly close the inlet (upstream) block
valve. Close the outlet (downstream) valve only
if reg u la tor removal is required.
SECTION VI
A. General:
1. Maintenance pro ce dures hereinafter are
based upon removal of the unit from the
pipeline where in stalled.
2. Owner should refer to owner's proce dures for
removal, handling and cleaning of re us able
parts, and disposal of nonreusable parts, i.e.
gaskets, suitable sol vents, etc.
3. If desired, the gaskets may be lubricated with
a light oil pro vid ed it is com pat i ble with the
fl uid.
VI. MAINTENANCE
4. Regulators originally supplied as “oxygen
cleaned” (Options 1000-55) are assembled
using special gasket sealant, Fluorolube
GR-362
1 , or equivalent. Cashco, Inc. rec-
om mends following factory cleaning spec-
ifi cation #S-1134, or equiv a lent. Con tact
factory for details.
B. Diaphragm Replacement:
1. Securely install the body (1) in a vise with the
spring chamber (2) directed up wards.
1 Product of Fisher Scientifi c Company
CAUTION
Do not walk away and leave a by passed regulator
un at tend ed.
WARNING
SYSTEM UNDER PRESSURE. Prior to per form ing
any maintenance, isolate the regulator from the
system and relieve all pressure. Failure to do so
could result in personal injury.
WARNING
SYSTEM UNDER COMPRESSION. Prior to re mov ing
fl ange bolts, relieve spring com pres sion by backing
out the adjusting screw. Failure to do so may result
in fl ying parts that could cause personal injury.
2. Remove closing cap (31) if provided. Relax
range spring (27) by turning adjusting screw
(6) CCW until removed from spring chamber
(2).