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PAGE 16 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (10/27/11)
Before Starting
1. Read safety instructions at the
beginning of manual.
2. Place pump as near to water as
possible, on a firm flat, level surface.
NOTE
Suction and discharge hoses are
available from Multiquip. Contact
your nearest dealer for more
information.
4. The discharge hose is usually a
collapsible
(thin-walled)
hose, however if a thin-walled discharge hose is not avail-
able, a rigid suction hose can be substituted in its place.
5. Make sure the
suction strainer
(Figure 2) is clean and
securely attached to the water end of the suction hose. The
strainer is designed to protect the pump by preventing large
objects from being pulled into the pump.
Before Starting:
DO NOT open
fill cap
if pump is hot! Water inside may
be under pressure.
WARNING - Fill Cap
Hoses and Clamps
1. Check that all hoses are
securely
attached to the pump.
Make certain suction hose (Figure 2) does not have any air
leakage. Use teflon tape or pipe dope on NPT threads.
2. Remember suction hoses must be
rigid
enough not to
collapse when the pump is in operation.
3.
Check that
the
discharge
hose (Figure 2) is not restricted.
Place hose so that it lays as straight as it is possible on the
ground. Remove any twists or sharp bends from hose which
may block the flow of water.
CAUTION - General Safety Precautions
ALWAYS wear approved eye and hearing
protection before operating the pump.
NEVER operate the pump in a confined
area or enclosed area structure that does
not provide ample
free flow of air
.
Handle Installation
The MQ-D2H/D3H diaphragm pumps are completely
assembled except for the steering handle. Attach the steering
handle to the pump base as shown in Figure 6.
PUMP BASE
WASHER
BOLT
HANDLE
GEAR
BOX
Figure 6. Handle Installation
CAUTION - Transmission Fluid
Transmission fluid needs to be added prior to operation.
SETUP