t30mdl1sm-rev0717
sandpiperpump
.
com
Model T30 Metallic •
8
Troubleshooting Guide
Symptom:
Potential Cause(s):
Recommendation(s):
Pump Cycles Once
Deadhead (system pressure meets or exceeds air
supply pressure).
Increase the inlet air pressure to the pump. Pump is designed for 1:1 pressure ratio at zero flow.
(Does not apply to high pressure 2:1 units).
Air valve or intermediate gaskets installed incorrectly. Install gaskets with holes properly aligned.
Bent or missing actuator plunger.
Remove pilot valve and inspect actuator plungers.
Pump Will Not Operate
/ Cycle
Pump is over lubricated.
Set lubricator on lowest possible setting or remove. Units are designed for lube free operation.
Lack of air (line size, PSI, CFM).
Check the air line size and length, compressor capacity (HP vs. CFM required).
Check air distribution system.
Disassemble and inspect main air distribution valve, pilot valve and pilot valve actuators.
Discharge line is blocked or clogged manifolds.
Check for inadvertently closed discharge line valves. Clean discharge manifolds/piping.
Deadhead (system pressure meets or exceeds air
supply pressure).
Increase the inlet air pressure to the pump. Pump is designed for 1:1 pressure ratio at zero flow.
(Does not apply to high pressure 2:1 units).
Blocked air exhaust muffler.
Remove muffler screen, clean or de-ice, and re-install.
Pumped fluid in air exhaust muffler.
Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Pump chamber is blocked.
Disassemble and inspect wetted chambers. Remove or flush any obstructions.
Pump Cycles and Will
Not Prime or No Flow
Cavitation on suction side.
Check suction condition (move pump closer to product).
Check valve obstructed. Valve ball(s) not seating
properly or sticking.
Disassemble the wet end of the pump and manually dislodge obstruction in the check valve pocket.
Clean out around valve ball cage and valve seat area. Replace valve ball or valve seat if damaged.
Use heavier valve ball material.
Valve ball(s) missing (pushed into chamber or
manifold).
Worn valve ball or valve seat. Worn fingers in valve ball cage (replace part). Check Chemical
Resistance Guide for compatibility.
Valve ball(s) / seat(s) damaged or attacked by product.
Check Chemical Resistance Guide for compatibility.
Check valve and/or seat is worn or needs adjusting.
Inspect check valves and seats for wear and proper setting. Replace if necessary.
Suction line is blocked.
Remove or flush obstruction. Check and clear all suction screens or strainers.
Excessive suction lift.
For lifts exceeding 20’ of liquid, filling the chambers with liquid will prime the pump in most cases.
Suction side air leakage or air in product.
Visually inspect all suction-side gaskets and pipe connections.
Pumped fluid in air exhaust muffler.
Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Pump Cycles Running
Sluggish / Stalling,
Flow Unsatisfactory
Over lubrication.
Set lubricator on lowest possible setting or remove. Units are designed for lube free operation.
Icing.
Remove muffler screen, de-ice, and re-install. Install a point of use air drier.
Clogged manifolds.
Clean manifolds to allow proper air flow.
Deadhead (system pressure meets or exceeds air
supply pressure).
Increase the inlet air pressure to the pump. Pump is designed for 1:1 pressure ratio at zero flow.
(Does not apply to high pressure 2:1 units).
Cavitation on suction side.
Check suction (move pump closer to product).
Lack of air (line size, PSI, CFM).
Check the air line size, length, compressor capacity.
Excessive suction lift.
For lifts exceeding 20’ of liquid, filling the chambers with liquid will prime the pump in most cases.
Air supply pressure or volume exceeds system hd.
Decrease inlet air (press. and vol.) to the pump. Pump is cavitating the fluid by fast cycling.
Undersized suction line.
Meet or exceed pump connections.
Restrictive or undersized air line.
Install a larger air line and connection.
Suction side air leakage or air in product.
Visually inspect all suction-side gaskets and pipe connections.
Suction line is blocked.
Remove or flush obstruction. Check and clear all suction screens or strainers.
Pumped fluid in air exhaust muffler.
Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Check valve obstructed.
Disassemble the wet end of the pump and manually dislodge obstruction in the check valve pocket.
Check valve and/or seat is worn or needs adjusting.
Inspect check valves and seats for wear and proper setting. Replace if necessary.
Entrained air or vapor lock in chamber(s).
Purge chambers through tapped chamber vent plugs. Purging the chambers of air can be dangerous.
Product Leaking
Through Exhaust
Diaphragm failure, or diaphragm plates loose.
Replace diaphragms, check for damage and ensure diaphragm plates are tight.
Diaphragm stretched around center hole or bolt holes. Check for excessive inlet pressure or air pressure. Consult Chemical Resistance Chart for compatibility
with products, cleaners, temperature limitations and lubrication.
Premature Diaphragm
Failure
Cavitation.
Enlarge pipe diameter on suction side of pump.
Excessive flooded suction pressure.
Move pump closer to product. Raise pump/place pump on top of tank to reduce inlet pressure.
Install Back pressure device (Tech bulletin 41r). Add accumulation tank or pulsation dampener.
Misapplication (chemical/physical incompatibility).
Consult Chemical Resistance Chart for compatibility with products, cleaners, temperature limitations
and lubrication.
Incorrect diaphragm plates or plates on backwards,
installed incorrectly or worn.
Check Operating Manual to check for correct part and installation. Ensure outer plates have not been
worn to a sharp edge.
Unbalanced Cycling
Excessive suction lift.
For lifts exceeding 20’ of liquid, filling the chambers with liquid will prime the pump in most cases.
Undersized suction line.
Meet or exceed pump connections.
Pumped fluid in air exhaust muffler.
Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Suction side air leakage or air in product.
Visually inspect all suction-side gaskets and pipe connections.
Check valve obstructed.
Disassemble the wet end of the pump and manually dislodge obstruction in the check valve pocket.
Check valve and/or seat is worn or needs adjusting.
Inspect check valves and seats for wear and proper setting. Replace if necessary.
Entrained air or vapor lock in chamber(s).
Purge chambers through tapped chamber vent plugs.
1
14
18
38
9
21
4
19
8
35
12
2
34
3
32
31
30
7
26
29
20
25
15
6
27
11
11
2
33
34
34
10
14
2
34
33
34
11
16
16
17
PTFE
FITTED
11
13
Torque:
360 in. lbs. (Alum and Stainless)
(40 N-m)
500 in. lbs. (Cast Iron)
(56 N-m)
Torque: 90 in. lbs.
(10 N-m)
Torque:Plate to Plate
60 Ft-lbs (720 In-lbs) Elastomeric
80 Ft-lbs (960 In-lbs) Santoprene and PTFE
5
28
33
34
2
34
33
34
40
39
22
23
36
43
44
45
41
45
42
37
37
9
ITEM NO. PART NUMBER
DESCRIPTION
QTY.
1
031.183.XXX
AIR VALVE ASSEMBLY
1
2
050.XXX.XXX
BALL, CHECK
4
3
070.006.170
BUSHING
2
4
095.110.313
ASSEMBLY, PILOT VALVE
1
5
114.024.XXX
INTERMEDIATE
1
6
132.035.360
BUMPER
2
7
135.034.506
BUSHING, PLUNGER
2
8
165.116.XXX
CAP, AIR INLET ASSEMBLY
1
9
170.006.115
CAPSCREW, HEX HD, 5/16-18 X 7/8
4
10
170.055.115
CAPSCREW, HEX HD, 1/2-13 X 2.50
16
11
170.060.115
CAPSCREW, HEX HD 7/16-14 X 2.00
16
12
170.069.115
CAPSCREW, HEX HD 5/16-18 X 1.75
4
13
171.059.115
CAPSCREW, SOC-HD 7/16-14 X 1.25
8
14
196.164.110
CHAMBER, OUTER
2
15
196.165.313
CHAMBER, INNER
2
16
286.098.XXX
DIAPHRAGM
2
17
286.098.604
DIAPRAGM, OVERLAY
2
18
360.093.360
GASKET, AIR VALVE
1
19
360.104.379
GASKET, AIR INLET
1
20
360.105.360
GASKET, INNER CHAMBER
2
21
360.114.360
GASKET, PILOT VALVE
1
22
518.143.110 TC
MANIFOLD, SUCTION TC
1
23
518.144.110 TC
MANIFOLD, DISCHARGE TC
1
24
545.007.115
NUT, HEX 7/16-14
16
25
545.008.115
NUT, HEX 1/2-13
16
26
560.001.360
O-RING
2
27
612.192.XXX
PLATE, INNER DIAPHRAGM
2
28
612.194.110
PLATE, OUTER DIAPHRAGM
2
29
620.020.115
PLUNGER, ACTUATOR
2
30
675.042.115
RING, RETAINING
2
31
685.040.120
ROD, DIAPHRAGM
1
32
720.004.360
SEAL, U-CUP
2
33
722.090.110
SEAT, CHECK VALVE
4
34
720.055.600
SEAL, CHECK VALVE
8
35
901.038.XXX
WASHER, FLAT 5/16"
4
36
901.046.115
WASHER, FLAT 1/2"
16
37
901.048.115
WASHER, FLAT 3/8"
4
38
530.033.000
MUFFLER
1
39
518.171.110
MANIFOLD, SUCTION FLANGED
1
40
518.172.110
MANIFOLD, DISCHARGE FLANGED
1
41
350.001.360
FOOT, RUBBER
4
42
170.061.115
CAPSCREW, HX-HD 3/8-16 X 1.75
4
43
545.004.115
NUT, HEX, 5/16-18
4
44
900.005.115
WASHER, LOCK 3/8"
4
45
901.005.115
WASHER, FLAT, 1/2
8
Torque: 90 in. lbs.
(10 N-m)
Composite Repair Parts Drawing
476-227-000
Air End Kit (Aluminum Center)
Air Valve Assembly, Pilot Valve Assembly, Seals,
O-Rings, Gaskets, Plungers
476-171-636
Wet End Kit
FDA Nitrile Diaphragms, PTFE Balls, PTFE
Encapsulated Seals
476-171-351
Wet End Kit
FDA Santoprene Diaphragms,
FDA Santoprene Balls, PTFE Seats
Service & Repair Kits
MODEL SPECIFIC
3: EXP
VIEW
Tel: 866-777-6060
Fax: 866-777-6383
Springer Pumps, LLC
Website: www.springerpumps.com
Int'l: +001 267 404 2910
