RAMVAC STANDARD 550 Original operating manual

SERVICE INSTRUCTION
EFFICIENCY IN DENTISTRY®
MOTOR REPLACEMENT
How to properly replace the motor on the following
models; Standard, Bulldog, and Bison.
STANDARD MODELS Procedures
Important Features
1 Phase Motor Replacement
3 Phase Motor Replacement
3 Phase Motor Startup
Page
2
3
4
14
• 550
(955.xxxx.xxx)
• 1400
(914.xxxx.xxx)
BULLDOG MODELS Procedures
Important Features
1 Phase Motor Replacement
3 Phase Motor Replacement
3 Phase Motor Startup
Page
6
7
8
14
• 550
(855.xxxx.xxx)
• QT
(809.xxxx.xxx)
• QT E
(809E.xxxx.xxx)
BISON MODELS Procedures
Important Features
1 Phase Motor Replacement
3 Phase Motor Replacement
3 Phase Motor Startup
Page
10
11
12
14
• BISON
(818.xxxx.xxx)
(826.xxxx.xxx)
• BISON E
(818E.xxxx.xxx)
(826E.xxxx.xxx)
*Note: Instructions relating to Standard 1400 models also apply to Standard 1200 and 2800 models.

Page 2
STANDARD
Standard Models Important Features

Page 3
STANDARD
1 Phase Motor Replacement
How to replace a 1 phase motor on Standard models.
1. Secure disconnect.
2. Move vacuum unit into an open area if needed.
Note location and orientation of motor wires for proper installation.
3. Disconnect motor wires from 2T1, 4T2, and motor ground in Electrols.
Remove motor wire from cord grip.
4. Remove belt guard.
5. Loosen all four motor mounting bolts ½ turn from full tight.
6. Loosen belt tension bolts and remove belt(s).
Note pulley and hub orientation for proper installation.
7. Remove motor pulley.
a. Set Screw Pulleys:
i. Loosen motor pulley set screws and remove pulley.
b. Taper Lock Pulley:
i. See “Taper Lock Pulley Remove and Replace” procedure in the
“Belt Replacement, Alignment, and Tensioning Service
Instruction”.
8. Remove motor mounting bolts and defective motor.
9. Install motor on base with motor mounting bolts previously removed.
10. Replace shaft key. Properly orientate pulley and pulley hub on motor
shaft. Do not tighten set screws or hub screws.
11. Place belts over pump and motor pulleys.
12. Tension and align belt. See “Belt Replacement, Alignment and
Tensioning Service Instructions”.
13. Connect motor wires with proper orientation as noted.
14. Replace vacuum unit in original spot. Reattach exhaust outlet and
Filtrols intake hose couplings.
1 Phase Gray Box Electrols
Note: Gray Box Electrols have several variations
Motor Wires 2T1,
4T2, Motor Ground
Motor Ground Lug
Standard 550 Motor Bolts
Motor Mounting
Bolts (4)
Belt Tension Bolts
Cord Grip

Page 4
3 Phase Motor Replacement
How to replace a 3 phase motor on Standard models.
1. Secure disconnect.
2. Move vacuum unit into an open area if needed.
Note location and orientation of motor wires for proper installation.
3. Disconnect motor wires from 2T1, 4T2, 6T3, and motor ground in
Electrols. Remove wire from cord grip.
4. Remove belt guard.
5. Loosen all four motor mounting bolts ½ turn from full tight.
6. Loosen belt tension bolts and remove belts.
Note pulley and hub orientation for proper installation.
7. Remove motor pulley.
a. Set Screw Pulleys:
i. Loosen motor pulley set screws and remove pulley.
b. Taper Lock Pulley:
i. See “Taper Lock Pulley Remove and Replace” procedure in the
“Belt Replacement, Alignment, and Tensioning Service
Instruction”.
8. Remove motor mounting bolts and defective motor.
9. Install motor on base with motor mounting bolts previously removed.
10. Replace shaft key. Properly orientate pulley and pulley hub on
motor shaft. Do not tighten set screws or hub screws.
11. Place belts over pump and motor pulleys.
12. Tension and align belt. See “Belt Replacement, Alignment and
Tensioning Service Instructions”.
13. Connect motor wires with proper orientation as noted.
14. Replace vacuum unit in original spot. Reattach exhaust outlet and
Filtrols intake hose couplings.
15. Perform “3 Phase Motor Start-up” procedure.
STANDARD
3 phase Gray Box Electrols
Note: Gray Box Electrols have several variations
Motor Wires 2T1, 4T2,
6T3, Motor Ground
Motor Ground Lug
Motor Mounting
Bolts (4)
Belt Tension
Bolts
Standard 1400 Motor Bolts
Cord Grip

Page 5
NOTES

Page 6
BULLDOG
Bulldog Models Important Features

Page 7
1 Phase Motor Replacement
How to replace a 1 phase motor on Bulldog models.
1. Secure disconnect.
2. Move vacuum unit into an open area if needed.
Note location and orientation of motor wires for proper installation.
3. Disconnect motor wires.
a. Gray Box Electrols:
i. Disconnect motor wires from 2T1, 4T2, and motor ground in
Electrols and remove wire from cord grip.
b. S1 Electrols:
i. Remove four cover screws and remove cover.
ii. Disconnect motor wires from M1, L1, and GND in S1
Electrols.
iii. Loosen cord grip fitting on motor junction box.
iv. Carefully remove wires from conduit leaving the conduit
attached to the S1 Electrols.
4. Remove belt guard.
5. Loosen all four motor mounting bolts ½ turn from full tight.
6. Loosen belt tension bolt and belt alignment bolt (if present).
7. Remove motor mounting bolts and defective motor.
Note pulley orientation for proper installation.
8. Loosen motor pulley set screws and remove motor pulley.
9. Replace shaft key. Properly orientate motor pulley on motor shaft.
Do not tighten set screws.
10. Position motor on base.
11. Place belt over pump and motor pulleys.
12. Install motor mounting bolts previously removed.
13. Tension and align belt. See “Belt Replacement, Alignment and
Tensioning Service Instructions”.
14. Connect motor wires with proper orientation as noted.
a. Gray Box Electrols:
i. Reverse step 3a.
b. S1 Electrols:
i. Reverse step 3b.
15. Replace vacuum unit in original spot. Reattach exhaust
outlet and Filtrols intake hose couplings.
BULLDOG
1 Phase Gray Box Electrols
Note: Gray Box Electrols have several variations
Motor Wires 2T1, 4T2,
and Motor Ground
Motor Ground Lug
S1 Electrols
Motor Wires
GND, M1, L1
Loosen Cord Grip Fitting
Cord Grip
Bulldog Motor Bolts
Belt Tension Bolt
Motor Mounting
Bolts (4)
Belt Alignment Bolt

Page 8
BULLDOG
3 Phase Motor Replacement
How to replace a 3 phase motor on Bulldog models.
1. Secure disconnect.
2. Move vacuum unit into an open area if needed.
Note location and orientation of motor wires for proper installation.
3. Disconnect motor wires from 2T1, 4T2, 6T3, and motor ground in
gray box Electrols. Remove wire from cord grip.
4. Remove belt guard.
5. Loosen all four motor mounting bolts ½ turn from full tight.
6. Loosen belt tension bolt and belt alignment bolt (if present).
7. Remove motor mounting bolts and defective motor.
Note pulley orientation for proper installation.
8. Loosen motor pulley set screws and remove motor pulley.
9. Replace shaft key. Properly orientate pulley on motor shaft.
Do not tighten set screws.
10. Position motor on base.
11. Place belt over pump and motor pulleys.
12. Install motor mounting bolts previously removed.
13. Tension and align belt. See “Belt Replacement, Alignment and
Tensioning Service Instructions”.
14. Replace vacuum unit in original spot. Reattach exhaust outlet and
Filtrols intake hose couplings.
15. Connect motor wires with proper orientation as noted.
16. Perform “3 Phase Motor Start-up” procedure.
3 Phase Gray Box Electrols
Note: Gray Box Electrols have several variations
Motor Wires2T1, 4T2,
6T3, Motor Ground
Motor Ground Lug
Cord Grip
Bulldog Motor Bolts
Belt Tension Bolt
Motor Mounting
Bolts (4)
Belt Alignment Bolt

Page 9
NOTES

Page 10
BISON
Bison Models Important Features

Page 11
BISON
1 Phase Motor Replacement
How to replace a 1 phase motor on Bison models
1. Secure disconnect.
2. Move vacuum unit into an open area if needed.
Note location and orientation of motor wires for proper installation.
3. Disconnect motor wires.
a. Gray Box Electrols:
i. Disconnect motor wires from 2T1, 4T2, and motor ground in
Electrols and remove wire from cord grip.
b. S1 Electrols:
i. Remove cover screws and cover from S1 Electrols.
ii. Disconnect motor wires from M1, L1, and GND in S1 Electrols.
iii. Loosen cord grip on motor junction box and remove conduit.
iv. Carefully remove wires from conduit leaving the conduit
attached to the S1 Electrols.
4. Remove belt guard.
5. Loosen all four motor mounting bolts ½ turn from full tight.
6. Loosen belt tension bolts and remove belts.
Note pulley and hub orientation for proper installation.
7. Loosen pulley hub screws and remove motor pulley.
a. See “Taper Lock Pulley Remove and Replace” procedure in the
“Belt Replacement, Alignment, and Tensioning Service Instruction”
8. Remove motor mounting bolts and defective motor.
9. Install motor on base with motor mounting bolts previously removed.
10. Replace shaft key and properly orientate pulley and pulley hub on
motor shaft. Do not tighten hub screws.
11. Place belts over pump and motor pulleys.
12. Tension and align belt. See “Belt Replacement, Alignment and
Tensioning Service Instructions”.
13. Connect motor wires with proper orientation as noted.
a. Gray Box Electrols:
i. Reverse step 3a.
b. S1 Electrols:
i. Reverse step 3b.
14. Replace vacuum unit in original spot. Reattach exhaust outlet
and Filtrols intake hose couplings.
1 Phase Gray Box Electrols
Note: Gray Box Electrols have several variations
Motor Wires 2T1, 4T2
Motor Ground
Motor Ground Lug
Bison Motor Bolts
Motor Mounting
Bolts (4)
Motor Tension
Bolts
Motor Wires
L1, M1, GND
S1 Electrols
Cord Grip
Cord Grip
Remove Cover
Screws (4)

3 Phase Motor Replacement
How to replace a 3 phase motor on Bison models
1. Secure disconnect.
2. Move vacuum unit into an open area if needed.
Note location and orientation of motor and control wires for proper
installation.
3. Disconnect motor wires.
a. Gray Box Electrols:
i. Disconnect motor wires from 2T1, 4T2, 6T3 on motor overload
and motor ground in Electrols. Remove wire from cord grip
b. S1 Electrols with Motor Starter:
i. Disconnect motor wires from 2T1, 4T2, 6T3, motor ground and
motor control wires from C1, C2, C3 in motor starter.
ii. Loosen cord grip fitting on motor starter. Remove wires and
conduit.
iii. Remove cover screws and cover from S1 Electrols.
iv. Pull motor wires and motor control wires into S1 Electrols.
v. Disconnect motor GND wire from S1 Electrols.
vi. Loosen cord grip fitting on motor junction box and remove
conduit.
vii. Pull motor wires out of S1 Electrols conduit.
4. Remove belt guard.
5. Loosen all four motor mounting bolts ½ turn from full tight.
6. Loosen belt tension bolts and remove belts.
Note pulley and hub orientation for proper installation.
7. Loosen pulley hub screws and remove motor pulley.
a. See “Taper Lock Pulley Remove and Replace” procedure in the
“Belt Replacement, Alignment, and Tensioning Service Instruction”
8. Remove motor mounting bolts and defective motor.
9. Install motor on base with motor mounting bolts previously removed.
10. Replace shaft key. Properly orientate pulley and pulley hub on motor
shaft. Do not tighten pulley hub screws.
11. Place belts over pump and motor pulleys.
12. Tension and align belt. See “Belt Replacement, Alignment and
Tensioning Service Instructions”.
13. Connect wires with proper orientation as noted..
a. Gray Box Electrols:
i. Reverse step 3a.
b. S1 Electrols with Motor Starter:
i. Reverse step 3b.
14. Replace vacuum unit in original spot. Reattach exhaust outlet
and Filtrols intake hose couplings.
15. Perform “3 Phase Motor Start-up” procedure.
Page 12
BISON
3 Phase Gray Box Electrols
Note: Gray Box Electrols have several variations
Motor Wires 2T1, 4T2,
6T3, Motor Ground
Motor Ground Lug
S1 Electrols
Motor Starters
Note: Motor Starters have several variations
Motor Ground
Motor Control Wires
C1, C2, C3
Cord Grip Fitting
Motor Wires
Motor Control Wires
Motor Wires
2T1, 4T2, 6T3
Cord Grip Fitting
Cord Grip
Remove Cover
Screws (4)

Page 13
NOTES

Page 14
Vacuum Controller
Main Air Filter
Filtrols - (Main Air
Filter inside)
Note: Contents inside
motor starters will vary.
For simplicity, not all motor
starter wiring is shown.
Switch any two of these wires to
reverse rotation.
Standard Models
Bison and Bulldog Models
Motor Starter
Filtrols Intake
Coupling
Page 14
3 PHASE MOTOR START-UP
Motor Overload
Filtrols
3 Phase Motor Start-up
How to properly start a 3 phase unit the first time or after
changes to motor, motor starter or Electrols.
1. Turn power on at disconnect.
Caution: Pump has 50% chance of rotating backwards.
DO NOT ALLOW debris to enter pump.
2. Check for correct pump rotation:
a. Standard Models:
i. Loosen Filtrols intake coupling and remove line.
ii. Place hand by Filtrols intake to determine airflow.
b. Bulldog and Bison Models:
i. Remove vacuum controller and main air filter from power unit.
ii. Place hand in Filtrols close to pump inlet to determine airflow.
3. Run vacuum unit long enough to determine airflow direction, then
turn pump off.
a. If air blows out of inlet pipe:
i. Reverse any two motor wires on motor overload.
ii. Repeat step 3.
b. If air sucks into inlet pipe:
i. Clean any oil or debris out of Filtrols.
4. Complete 3 phase motor start-up
a. Standard Models: Re-install Filtrols inlet line
b. Bulldog and Bison Models: Re-install main air filter and vacuum
controller.

Page 15
NOTES

NOTES
3100 First Avenue
Spearfish SD 57783 USA
Web: ramvac.com
Phone:
Fax:
1-800-5-RAMVAC
1-605-642-4614
1-605-642-3776
SOF_7.2.3-01-145
Effective Date: 21-Oct-05
Page 16 of 16