18
T
O
ADJUST
P
RESSURE
S
WITCH
:
While checking pressure on gauge (1), adjust screw
(2) clockwise to raise pressure and counter clockwise
to lower pressure. Only adjust screw in 1/2 turn
increments and let the vacuum cycle. If pressure does
not raise, check for air leaks or a worn out
compressor. Pressure should reach between 80
and 90 pounds before cycling.
1
2
A-101 Pulse Vac
Operating & Maintenance
Instructions
T
O
CLEAN
POPET
VALVE
:
Remove top cover of vacuum. Then remove the 5 bolts
on the popet valve to expose diaphragm. Wipe off ring
on the valve (1) with a clean cloth. Wipe off the nylon
washer on diaphragm (2).
(DO NOT USE ANYTHING ABRASIVE ON THE WASHER)
Install diaphragm with the nylon washer down. Then install
spring (3), followed by top of valve (4).
1
2
3
4
Secondary Filter & Housing:
When total filtration is required for hazardous
material or high tech facilities, the secondary
filter housing (1)& filter is used with two differ-
ent filter options depending on your require-
ments.
1
