Cashco 1000 LP - Manual (Page 3)

IOM-1000LP-Basic 3
IV. STARTUP
1. Start with the block valves closed. A bypass
valve may be used to maintain outlet pressure
in the downstream system without changing the
fol low ing steps.
2. Relax the range spring by turning the adjusting
screw counterclockwise (CCW) a min i mum of
three (3) full revolutions. This re duces the outlet
(down stream) pres sure set point.
3. If it is a “hot” piping system, and equipped with
a bypass valve, slowly open the bypass valve
to pre-heat the system piping and to allow slow
expansion of the piping. Ensure proper steam
trap operation if installed. Closely monitor out let
(downstream) pressure via gauge to ensure not
over-pressurizing. NOTE: If no bypass valve is
installed, extra caution should be used in start ing
up a cold system; i.e. do everything slowly.
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
piping system isn't pres surized. If the outlet
(downstream) 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, begin 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. 15-30 psig (1.0-2.1
Barg) range spring, at low fl ow the outlet pres-
sure should not exceed 39 psig (2.7 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 reg u la tor
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:
WARNING 1
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.
VI. MAINTENANCE 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 use-
able parts, and disposal of non reuseable
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.
CAUTION D
Do not walk away and leave a by passed regula-
tor un at tend ed.
SECTION IV