Blagdon Pump AP50 User Manual

MANUAL AND PARTS LIST

AP50

SUBMERSIBLE

DISTRIBUTOR

This pump should be used in accordance with the requirements of the Safety, Health & Welfare at Work Act 2005.

All business conducted subject to IDEX Pump Technologies, Ireland. Terms and Conditions of Sale, available on request.

IMPORTANT

IDEX Pump Technologies (Ireland) Ltd.,
A Unit of IDEX Corporation,
R79, Shannon, Co Clare, IRELAND.
TEL. : [phone] FAX. : [phone]
Web Site : www.blagdonpump.com
E-Mail : [e-mail]

HG-CF-826 (Rev I)

AP50

AIR POWERED CENTRIFUGAL PUMP

1. OPERATION

1.1 Check level of oil in reservoir by removing oil filler plug (36). An
SAE 20 mineral based oil or equivalent is recommended.

Caution

Care should be taken when working with oils & greases, they

should be handled in accordance with good standards of industrial
hygiene and safety practices. Use a barrier cream, wear pvc or
neoprene gloves and overalls. Regular changes of contaminated

clothing is recommended.

1.2 Ensure that all air connections to the pump are clean and secure.

Turn on air supply to check free starting of the pump prior to

submergence in the fluid. Maximum air pressure - 8.6 Bar (125

psi). A filter / regulator located in the air supply line is

recommended.

1.3 If the pump fails to start immediately, the rotor vanes (55) may be

sticking, turn air supply on & off full bore repeatedly, to free the

vanes.

1.4 Should the pump still fail to run, turn off the air supply and

remove the base strainer (1). Turn the impeller (3) by hand to
ensure free rotation, remove solids accumulation where necessary.

Refit base strainer.

1.5 Ensure air filter (39), located in air hose union (40) is clean. Blow

air through exhaust outlet thereby reversing the air flow, which in
turn should remove any contamination. Alternatively, remove air

hose union (40) and manually clean the filter.

1.6 When operating the pump fully submerged, a hose should be
fitted to vent the exhaust air to atmosphere.

2. LUBRICATION

2.1 Check oil level daily or after 8 hours of continuous use. The rate of

oil flow is set prior to despatch from the factory. Adjustment can be
made to the oil flow if necessary. Remove the lockscrew (26) to
gain access to the oil feed screw (25). Turn the oil feed screw (25)
clockwise to restrict oil flow and anti-clockwise to

increase oil flow. Replace lockscrew (26) to protect oil feed screw

from damage.

2.2 There are two grease lubrication points on the pump, both use a

Castrolease CL Light, or equivalent grease. The upper grease
nipple (67) only requires one push of the grease gun per month to
lubricate the governor mechanism. the lower grease nipple,
supplying the lower pump bearings and pump seals may be
generously filled. Remove the level plug (65) and pump grease
into the grease nipple (67) until it shows at the level plug aperture.
Replace level plug (65). Check levels regularly & ensure correct
grease is used. Failure to use correct grease may result in

premature seal and bearing failure.

NOTE - When operating the pump the following guidelines

should be observed to ensure low maintenance.

2.3 Pumping solids increases wear, it is therefore advisable to to
arrange for the pump to stand on a firm base to prevent sinking.

2.4 When pumping abrasive solids and matter in suspension, the

impeller (3) clearance should be increased by adding more

gaskets (4) & (5) to act as shims at the flange joint.

2.5 Do not operate the pump for long periods out of the fluid as the
frictional heat generated may damage the seals and bearings.

2.6 The noise generated by the pump in confined spaces may be

objectionable, a silencer (part no. AP50.79), is available to reduce

noise levels to an acceptable level.

2.7 When it is necessary to completely de-water tanks, bilges etc., a

perforated base plate (part no. AP50.78), is available and should

be fitted as an alternative to the standard strainer (1).

3. OVERHAUL / REPAIR

NOTE - Ensure air supply is dis-connected before attempting to

overhaul any section of the pump.

Governor Housing

3.1 Remove cylinder bolts (51) from pump assembly. Lift the

governor housing (50) free from the pump assembly together
with air hose union assembly.

3.2 Check freedom of movement of the upper governor section (48)

together with governor balls (31) & ball cage (30). Check for

wear or damage and replace as required.

3.3 Ensure that governor valve (45) is free by pushing against the

spring (44). If excessive wear is suspected, remove air hose union
(40) and withdraw governor valve. Check both valve (45) and
cylinder (34) bore for wear or damage and replace as required. If

o-rings (35) & (46) are damaged or attacked, replace as required.

3.4 Re-assemble the governor housing as above in reverse order. If

gasket (53) is damaged or soiled, replace prior to final assembly.
Ensure that an adequate supply of grease is pumped into the

housing via the grease nipple (67) prior to pump running.

Air Motor

3.5 Remove the governor housing as described above. Lift the air
motor assembly free from the pump, and place in a clean area.

Caution
In the event of the pump running without any lubrication, Rotor

Vane wear debris may be present within the air motor section.

Dust masks should be worn to prevent the inhalation of particles.

Using the cylinder bolts (51), screw into the upper bearing plate

(27) and 'jack' the plate off the cylinder body (20).

3.6 Check the rotor vanes (55) for excessive wear and replace as

required. Ensure that the springs (54) are correctly positioned

prior to re-assembly.

3.7 Both upper and lower bearings should turn freely, if difficulty is

experienced, replace immediately. Ensure all components are

clean prior to re-assembly.

3.8 Re-assemble the air motor as described above in reverse order. If
gasket (61) is damaged or soiled, replace prior to final assembly.

Ensure the slots of the coupling nut (63) are correctly engaged in

the impeller shaft (74) before fully tightening of the cylinder bolts

(51).