5
w
w
w
.m
a
r
k
e
s
.c
o
m
2
Components
(1)
Air inlet
The air inlet is located on the filter housing and provides a built-in means of attaching tubing for suction
sampling.
(2)
Air inlet pump fIlter
A 10 µm nylon air inlet pump filter protects the pump assembly from dirt.
(3)
Flow adjustment
Requires flat-bladed screwdriver.
(4)
Battery check
This green LED (B) indicates that sufficient battery power is available to run the pump for 8 hours under
normal load conditions.
(5)
ON/OFF switch
(6)
Fault indicator
This red LED (F) indicates a flow fault due to excessive back-pressure or insufficient battery voltage to
maintain flow. If flow changes exceed 5%, fault icon appears. If fault exceeds 30 seconds, pump shuts
down and display will show sample time.
(7)
Clock display
The Clock display shows the continuous run-time (in minutes, to two decimal places), and will lock-in the
sample time upon fault indication. The time will reset to zero when the power switch is turned OFF and
then back ON again.
(8)
Outlet port
The Outlet port provides a receptacle for the bag sampling accessory. The screw-cap prevents dirt from
entering the Outlet port when not in use.
(9)
Bag sampling accessory
When installed into the Outlet port, this accessory provides a means for filling air sampling bags.
(10) Case screw
These screws must remain tight and should be checked prior to beginning sampling.
(11) Charging jack
The Charging jack receptacle is used to connect a charger for recharging the internal battery pack.
(12) Belt clip
(13) Rechargeable battery pack
(14) Mode indicator
The Mode indicator visually confirms the sampling mode selected (black for constant-flow, and white for
constant-pressure).
(15) Mode selector
The Mode selector is used to change the sampling mode. The selector is used for unlocking, indexing, and
re-locking the mode selector valve while changing from constant-flow mode to constant-pressure mode.
(16) Hex key
(17) Back-pressure adapter
The metal Back-pressure adapter gives the required minimum back-pressure the pump needs for low-flow
TD use. Use this in conjunction with the ⅛″ tubing from (18) with standard ¼″ and 6 mm o.d. TD tubes for
flows up to 100 mL/min.
(18) Tubing assembly
Use the plastic tube adapter, shown as part of the tubing assembly, in place of the Back-pressure adapter
when sampling onto SafeLok tubes or at flows greater than 100 mL/min.
