Packing Nut Adjustment; Chemical Metering & Selector Valves; Pressure Regulator - Prochem BLAZER PLUS Operating Instructions Manual

PACKING NUT ADJUSTMENT FOR
CHEMICAL METERING AND
CHEMICAL SELECTOR VALVES
Examine the packing nut on the metering and
selector valves for proper tension every 200 hours.
When turning the knob, there should be a small
amount of resistance. If not, slightly tighten the
packing nut. DO NOT over tighten. Keeping the
valve packings properly adjusted
will eliminate possible leakage from the valve stem
and add to overall valve life.
Remove knob
by loosening set
screw to access
packing nut.

PRESSURE REGULATOR

The pressure regulator serves only to hold locked up
water pressure at a preset point and to bypass this
water back to the water box.
To adjust:
1. With your unit running, close the cleaning tool.
Check the pressure gauge. Open the tool valve. We
recommend setting the pressure regulator so that
the pressure gauge reads 350 PSI with the tool
valve open.
When the tool valve is opened, there is an
approximate drop of 50 PSI in pressure. If there is a
pressure drop greater than 100 PSI, it may be
necessary to lubricate the o-ring in the pressure
regulator.
2. If the pressure regulator requires adjustment,
loosen the locking nut, then turn the adjusting body
(cap) (while observing the pressure gauge on the
control panel) until the desired pressure is obtained.
Retighten the locking nut.
DO NOT loosen the adjusting body (cap) all the
way (counterclockwise) or remove it while the
unit is running.
CHEMICAL
SELECTOR
VALVE
PACKING NUT
(use 5/16"
open end wrench to adjust)
CHEMICAL
METERING
VALVE
PACKING NUT
BLAZER 980073 09/16/02
We recommend that you lubricate the pressure
regulator o-ring every 50 hours, or whenever
required. If you do not, the stem may become
seized due to inadequate lubrication. If this occurs:
a) Shut-down the unit.
b) Relieve all pressure from the water system.
c) Remove the cap from the pressure regulator
and remove the stem with long nose pliers.
d) Clean and lubricate stem.
e) Reassemble pressure regulator.
MAINTENANCE
4-10