Technical Support

We offer preventative maintenance services, on-site and depot repair,
premium service contracts, instrument rentals, and spare parts.

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Preventative Maintenance Service

For DSV systems that are functioning properly, an annual Preventative Maintenance (PM) Service is recommended to replace consumable parts before they fail and ensure continuous operation. The PM Service replaces syringe(s), syringe pump valve(s), injection valve rotor, gear pump gears/pistons/spring-clip, 7 micron gear pump filter, in-line 20 micron filter, 2 x 10 um reservoir filters, and the 2-way solenoid valve. There are several ways to options for purchasing the PM Service:

Type of Service	Performed by	Includes
On-site PM Service	Service Engineer On-site	Parts and labor
Depot PM Service	Service Engineer at Houston MJ Associates	Parts and labor
Customer PM Service	Customer with Houston MJ Associates parts	Parts only

On-Site Repair

For a DSV system that is not functioning properly, a service engineer can come on-site to repair the instrument. During an initial troubleshooting phase, Houston MJ Associates will contact the customer, study the recent data files, and make a best effort over email/phone to pinpoint the root cause of the instrument failure. The service engineer can then transport the assumed correct parts to the site to repair the instrument. However, it is always possible that the root cause was misdiagnosed or that there were other problems that were not detected during the troubleshooting phase. In this case, the service engineer can attempt to repair the instrument with available parts on-site, or the service engineer may recommend shipping the instrument to Houston MJ Associates in order to be repaired properly.

Generally, we will recommend depot repair for a malfunctioning instrument, given that we have much better troubleshooting/repair capabilities at the depot. However, we do understand there are situations where it is very difficult to send the instrument to Houston MJ Associates, especially when the instrument is located outside of the United States. In these cases, we will make our best effort to successfully perform the repair on-site.

Depot Repair

For a DSV system that is not functioning properly, the instrument can be shipped to Houston MJ Associates for repair. If the customer does not have the original box and shipping foam, we can ship the customer an empty box with shipping foam so that the instrument is properly protected during shipping. If the customer needs a replacement instrument to handle the sample load while the malfunctioning instrument is being repaired, Houston MJ Associates has units available for short-term rental (minimum rental period of 1 month). At the depot, the malfunctioning instrument will be thoroughly inspected, diagnosed, repaired, and tested before being shipped back to the customer.

Premium Service Contract

Houston MJ Associates offers Premium Service Contracts on Y501's in good working order. The Premium Service Contract covers parts and labor over a period of one year for repairs on a single Y501. These repairs must be due to normal wear and tear, and not due to negligence or improper use of the machine.

Instrument Rental

Houston MJ Associates offers demo Y501 units for monthly rental, with a minimum rental period of 1 month. Generally, a rental unit can be shipped to the customer within one week. Renting is a good option for customers who have a unit out for repair. It also works for customers who would prefer to rent-to-own rather than buy the demo unit outright.

Preventive Maintenance Recommendations

All DSV Users must perform periodic preventive maintenance service actions in order to keep their system in satisfactory working condition. The guidelines below offer a general outline for users to establish a preventive maintenance schedule for their DSV systems. Please note that the frequency of certain service actions can vary depending on solvent, sample type and general application.

Daily
Weekly
Monthly
Annual

Service Action	Part(s) Required
Purging P1 and P2	None.
Backflush (frequency varies by user and application)	DSVBFK-M or DSVBFK installated
Communication check and Initialization of Peripherals	None.
Keep record of P1, P2, Ratio and P/S in Log Book	None.
Check Y501 oven and Vortex (If Applicable) temperatures	None.
Check inside Y501 for solvent leaks	None.

Service Action	Part(s) Required
Replacement of in-line sample filter frit (frequency varies by application)	DSV1024 and DSV1019
Backflush (frequency varies by user and application)	DSVBFK-M or DSVBFK installated
Full system reboot	None.
Check solenoid valve for proper functionality	DSV1017 if replacement is required
Linearity test	None.

Service Action	Part(s) Required
Replacement of 7 micron gear pump filter (frequency varies)	FIL0074
Replacement of 10 micron solvent reservoir filters (frequency varies)	FIL0075
Check stirring capability at every Autosampler position (if applicable)	Contact HMJ if any fault found.
Clean needle	NDL0006 may required if needle found to be damaged
Multi-solvent backflush	DSVBFK-M or DSVBFK installated
Dusting Y501 chassis and Autosampler transport rails	None.
Correlation study (If required)	None.

Service Action	Part(s) Required	Included in Annual PM Service* (DSV4000)?
Replacement of 6-port valve rotor	DSV1031	Yes.
Replacement of solenoid valve	DSV1017	Yes.
Gear pump rebuild	DSV1028	Yes.
Replacement of syringe(s)	500-Series Single: SYR0040 500-Series Dual: SYR0040, SYR0041 600-Series Single: SYR0055 600-Series Dual: SYR0055, SYR0056	Yes.
Replacement of syringe pump valve(s)	500-Series Single: DSV1033 500-Series Dual: DSV1034 600-Series Single: VAL0222 600-Series Dual: VAL0222, VAL0223	Yes.
Replacement of in-line sample filter frit	DSV1024	Yes. (10 pk 20 micron + 10 pk 40 micron)
Replacement of 7 micron pump filter	FIL0074	Yes.
Replacement of solvent reservoir filters	FIL0075	Yes.
Deep Clean Service	DSVDCL	No.

*HMJ's on-site/depot annual preventive maintenance service is strongly recommended for all DSV users. Please contact us for more information and quotes for this service.

Spare Parts

For customers that prefer to do repairs and replacements by themselves, Houston MJ Associates offers a full range of spare parts. The most commonly requested spare parts are listed below, and please contact us for any parts you do not see here.

Y501 Parts
Syringe Pump Parts
Autosampler Parts

Part ID	Description
ACT0010	Electric actuator for inject/load valve
BUL0011	Bulb for Pump switch
BUL0012	Bulb for Power switch
CON0779	DSV interface box with 2-meter ribbon cable
DSV1017	2-way solenoid valve with connector housing
DSV1019	Teflon in-line filter housing
DSV1021	Y501 amplifier board
DSV1024	20 micron frits for in-line sample filter
DSV1028	Gear pump rebuild kit
DSV1031	Rotor for 6-port valve
DSVBFK	Automatic backflush kit, installed
DSVBFK-M	Manual backflush kit
FIL0074	7 micron gear pump filter
FIL0075	10 micron reservoir filter
MOT0044	Gear pump

Part ID	Description
DSV1033	Microlab 500 series single valve
DSV1034	Microlab 500 series dual valve
DSV-FTK	Manual flanging tool kit for flanging various sizes of plastic tubing
NUZ0063	Fittings and washers for 500 series valves, pack 10
NUZ0064	Fittings and washers for 600 series valves, pack 10
NUZ0065	valvesPlugs for 600 series
SYR0040	Microlab 500 series syringe, 10 ml
SYR0041	Microlab 500 series syringe, 25 ml
SYR0055	Microlab 600 series syringe, 10 ml
SYR0056	Microlab 600 series syringe, 25 ml
VAL0222	Microlab 600 series, right valve
VAL0223	Microlab 600 series, left valve

Part ID	Description
BOT0024	40 ml vials with TFE/silicone septa; 0.06" thick septa; pack of 72
DSV1032	Stir bars, 4 x 12 mm, pack of 100
GPC0255	Z-drive, 123 mm arm
GPC0256	Z-drive, 123 mm belt
GPC2617	Stir tray assembly
GPC2621	Electronic chassis assembly
MOT0047	DC motor for stir tray
NDL0006	Autosampler vented needle
ORZ0091	Stir tray pulley belt